SEA - LHR

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SEA — LHR
Dec 1 — Dec 81
Round-trip
1 adult
Economy
0 bags
From?
To?
Wed 12/1
Wed 12/8

Good to know

Low season

October

High season

December

Average price round-trip

$600

Good deal round-trip

$573

Good deal one-way

$430
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 31% increase in price.
(avg. price over the last 2 weeks)
or less
or less

When to book flights from Seattle to London Heathrow Airport

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $430 or less one-way and $573 or less round-trip.
  • The cheapest flight from Seattle to London Heathrow Airport was found 62 days before departure, on average.
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is October.
  • Morning departure is around 11% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking Seattle to London Heathrow Airport flights

Top 4 airlines serving Seattle/Tacoma Intl to London Heathrow

Scores according to KAYAK customer reviews
7.4
Aer LingusOverall score based on 6117 reviews
7.6Boarding
7.2Comfort
8.0Crew
7.1Entertainment
6.8Food
Airline reviews
Pros: "They were nice, rushed through beverages, but since it was a short flight that's understandable."
Cons: "The top cushion on the seats could be less bulky."
Read more about Aer Lingus
Pros: "They were nice, rushed through beverages, but since it was a short flight that's understandable."
Cons: "The top cushion on the seats could be less bulky."
Pros: "Comfortable, good food and good crew"
Pros: "Seating and leg room much better than Ryan Air!"
Pros: "It was short and with friendly staff."
Cons: "No complimentary refreshments."
Pros: "Everything except the food"
Cons: "The food."
Cons: "Best flight I have ever been on"
Cons: "It would have been nice to have a free drink and snack on the short flight. We would have taken some with us on the plane if we would have known that we had to pay for everything. Just something we have never experienced on any international trip before"
Cons: "Late - again!"
Pros: "Crew was amazing, someone had found my passport and turned it in to a crew member."
Cons: "Nothing"
Pros: "Check in was a breeze with all so helpful. Cabin crew very pleasant. Very comfortable on time flight."
Cons: "Aer lingus uses double prong headphones which dates the whole experience earphones are uncomfortable and volume is bad. You have to pay for booze in economy for international flight, seats aren’t that comfortable but the selection of movies and tv is good. I will probably look elsewhere next time"
Pros: "Great equipment. Decent entertainment, sparsely filled cabin. Seat change to isle request before boarding readily made with no fuss. I noticed that passengers could actually make out pa announcements both at PDX and in flight. Doesn’t bother me anymore when I can’t but can be very concerning to anyone who rarely flies. Never understood going to the trouble of making announcements both pre-boarding & on-board pre-flight, that no one can even make out. That was not an issue here."
Cons: "Better lumbar support is always appreciated, adjustable lumbar would be very nice and could make or break an entire flight. No seat on any flight should ever be even the slightest ill repaired. Again, this equipmemt all seemed great. Lastly, since I prefer to always have a water, coke or coffe and or snack in front of me during entire flight, a bit of self serve (grab a water, coffee or snack yourself without having to make staff work a simple task would be nice on every flight. The flight from SEA-DUB was basically great and equipment is always of the utmost importantance."
Pros: "When I finally settled into my seat on the British Airline and that Hostess came around and offered me a couple of free drinks that was the best thing that happened to me all day."
Cons: "For an older couple like us did not like having to climb the steps up into the Plane and being out in the rain did not help. However that was not the worst part of the arrangement between getting off the Aer Lingus plane and with so little time to reach the gate for our BA flight to Denver it was a total disaster. Due to a minor problem my wife had with her foot I had asked for a wheel-chair to be available when we got off the plane at Heatrow. Good job that I did because with out their help we would never have made it in time for your flight to Denver. Between up and down in elevators, running along the corridors, in and out of a bus and I myself trying to catch up with those poor attendants. I was sorry that I did not get a second wheel chair for my self. Only for the flight was delayed by about 20 minutes we would have missed the flight. Who ever was responsible for making the arrangements of just allowing a time of 1 hour and 10 minutes between flights needs to figure out a better time schedule before people of our age ends up getting stressed out and end up with a heart attack. Very stressful indeed, believe I will never let this happen to me again. Fly/Us you need to fix this."
Pros: "Not a lot"
Cons: "The flight was delayed for 6 hours due to a mechanical problem. For 6 hours the passengers were told little or nothing & were eventually given a voucher for $10 to redeem on plane. Mechanical problems can of course occur,but how the airline,Aer Lingus,dealt with this was appalling."
Pros: "I love Aer Lingus, they appear to be always on time and nice comfy seats. No problem boarding, was nice and quick."
Cons: "Nothing to not like at mo."
Pros: "Shannon is a very easy airport."
Cons: "I was unable to get my seats assigned from America. I had to go to the Aer Lingus desk when I arrived to get seat assignment."
Pros: "Plane was half full."
Cons: "Food was terrible, and if you’re white and your significant other is black you may have to request things for her because she won’t get them even when she asks"
Pros: "took off early once they had accounted for everyone, and arrived a little early too."
Cons: "While I didn't have to check my bag on the first longer flight, I did have to check it on the connecting flight which delayed me somewhat in getting into the city of London. Not awful, but strange... Free-for-all when boarding, not nearly as organized as it was at JFK."
Pros: "The efficient flight but no drinks or snacks w/o purchase"
Cons: "Paying for inflight drinks. All US airlines provide FREE complimentary drinks and snacks. Seemed in poor taste to charge for such things made the airlines appear cheap."
Pros: "On time"
Cons: "We had to spend $1000 on tickets because Kayak DID NOT book us on the flight we had a confirmation for"
Pros: "That it only lasted 50 mins"
Cons: "Packed with low class beer drinking plebes."
Cons: "Extremely uncomfortable. The seats were too close together and not enough room, but overall the airline is great. Will travel with them again, but will travel business class next time."
Cons: "Could not check in on-line from Dublin on either Air canada or Aer Linguis websites. Time to sort out this long-standing problem"
Pros: "Fast efficient boarding. Short flight so no issues."
Pros: "Boarding went quickly but there was no discomfort on the plane. Staff was friendly and efficient and they made an effort to take off and arrive early to our destination."
Cons: "Nothing, excellent trip"
Pros: "Swift boarding process, mannerly stewards"
Cons: "When landed, the back door of the aircraft was opened, despite passengers only disembarking form the front. It was very cold."
Cons: "Terrible"
Pros: "Was part of my international flight"
Cons: "Was part of my international flight"
Pros: "Ahead is schedule"
Cons: "Even had to pay for coffee"
Pros: "short and uneventful...friendly staff!"
Pros: "Friendly staff."
Pros: "The flight was quick and smooth. We didn’t have any trouble getting onto the flight and finding our seats."
Cons: "I didn’t like that there was no complimentary drink service . When they came around with tea or coffee is was 3€, I wasn’t informed that until after I asked for a tea. I would never have got it otherwise. That may have been my misunderstanding since on our other Aer Lingus flights we had been given complimentary tea."
Pros: "They quickly booked us on another flight after we found out AT the airport."
Cons: "2 hour delay, but we made it!"
Pros: "Flight attendants were nice looking, very friendly, smelled nice they could not have been warmer people!!"
Pros: "everything was good as usual"
Cons: "check-in desk couldn't check me through to my connecting flight with Virgin Atlantic so I had 15mins once landed in Heathrow to get through passport security and checkin at Virgin Atlantic desk.... I'm young and fit so was able for the dash but elderly or familys would not have made the connecting flight in that time"
Cons: "Bags got delayed by a day."
Cons: "Custom made bike box erroneously classified oversized, but they didn't charge for it so ok"
Pros: "Crew, speed, ease of security at Cork"
Cons: "The lady in 1C who turned her phone on as soon as we hit the British coast"
Pros: "Crew polite. Seats comfy."
Cons: "One person checking boarding cards at gate led to a ridiculously long queue for a nearly full flight and made it late getting us all on the plane and passengers were getting annoyed. Then whatever machinery Aer Lingus use to push the plane back from the gate actually got stuck on the plane cone leading to another delay. Knock on was we were made to wait for a take off slot and made to wait for a landing slot at Heathrow so late arriving."
Pros: "Reilly dolly"
Cons: "The other trolley dolly"
Pros: "Punctual and on time"
Cons: "Nothing really"
Pros: "The British Airways portion was exceptional! The Aer Lingus portion was not!"
Cons: "On Departure for Dublin, waited in long line to check in at Aer Lingus only to learn it was co chaired by British Airways, so Aer Lingus would not service us at all. We had no way of knowing since it was sold by Aer Lingus and had an Aer Lingus flight number. Tried to check in on line, but was unable. Waited for Aer Lingus customer service on telephone customer service for more than one hour and finally just gave up. Aer Lingus has no Customer Service at all. Do not deal with Aer Lingus under any circumstances. British Airways met our needs!!"
Pros: "The personnel involved with wheelchair services who took us to our gate was very helpful and engaging. We thank them for this service. The gate personnel and flight attendants were helpful to get us on the flight earlier that was helpful with my husband" visual disability."
Cons: "The problem I had is that this was not a British Airways flight, nor were my flights to Dublin. I was not aware of this. When I checked in online I was allowed to check in with British Airways, so I had no idea that this was an Aer Lingus flight, which is in a different terminal with a different flight number. My phone didn't work in Ireland so it was extremely difficult figuring out where I should have been. If I was on a different airline that is affiliated with British Airways, and I booked through British Airways, there should be some way of looking up where I should be going. Also, any emails about my trip should have told me which airline I was on. I fly often, and often to other countries. This was the most confusing and difficult flying experience (the entire trip -- getting to and from Dublin) I have ever had."
Cons: "I'm soooo upset about the service after my flight canceled. 1.the staff ignored me when I asked if I could have a VIP to rebook my tickets earlier because my mom got cancel and was going to do the surge . But he went away and never came back, no any response of YES or NO. 2.I don't know why the airline company still need 11 hours to rebook the tickets with all our flight information and our passport liscen numbers already , making us waiting till 3 am at the airport. 3. I asked my boyfriend to talk to the staff on phone, and the staff told my BF that he didn't know my English was not good. I said to him loudly that I had told him , but the manager besides said "don't shout at my staff"to me, even without asking me what happened . I don't think that was a good attitude for the service department, especially to a foreigner. My email address is Chentongtong@wku.edu.cn"
Pros: "Comfortable Clean"
Cons: "Food/drinks a little expensive"
Pros: "The fact that I could charge my i phone..."
Cons: "The lax attitude to service and customer satisfaction there was a problem with the entertainment system, took over an hour to get attention... But no positive resolution..."
Pros: "The planes were comfortable and the online and airport check-in process goes smoothly."
Cons: "Not even water is available to passengers. And flight attendants must shill to SELL food perfumes and merchandise during the entire flight. It seemed very unseemly that professional flight attendants were forced to behave in such an unprofessional manner. Sell, sell, sell is their job on Aer Lingus."
Pros: "We were late for our connecting flight because of a plane issue and no one from the Air Lingus did anything to help us get to our next flight out of London to Munich. We asked several times and they said follow the signs ."
Pros: "Smooth experience overall, from check-in to baggage claim. Crew was very nice. Economy seats had a fair amount of space."
Cons: "No meal included on international flight."
Pros: "Good crew and a smooth flight"
Cons: "Loudspeaker system lousy, could not hear any announcement from cocpit nor cabin crew about safety or flight progress"
Pros: "It was quiet and nice not to be interrupt Ed by food service"
Cons: "Bathrooms on plane could have been better maintained"
Pros: "Connection gate in Rekyaveck wa. Sry convenient"
Cons: "Seat comfort for a new plane was terrible"
Cons: "Very limited food choice."
Pros: "Service was great!"
Cons: "It would be nice to have a few more food choices for the long flight"
Pros: "Nice crew, good in flight entertainment options, food and drink options are good but expensive"
Cons: "One of the most cramped and uncomfortable flying experiences I've ever had. My whole body was sore afterwards. Also, boarding was a mess with changed seats, not enough employees at the gate, and dozens of passengers crammed into a weird pre boarding area."
Cons: "Our plane was broken. Initially they said an hour late and then the time before our flight increased. Because our flight was delayed, I missed I missed an important meeting."
Cons: "Overcrowded, no leg room and staff unwilling to help move two travelers near each other. Did not appreciate the rough demeanor and having to flag down attendants for water when they skipped over our aisle. Would avoid this airline in the future if possible."
Cons: "Flight was delayed 1.5 hours due to an unexplained "maintenance issue." A friend of mine who had paid extra to get an exit row with extra leg room was inexplicably moved to a normal seat, and was only upgraded when she complained. I was moved from a window seat to an exit row without explanation, unfortunately, this was an exit row where a life raft was attached to the door, leaving me even less leg room than a normal seat would have."
Pros: "All the Icelandair staff from Seattle to Frankfurt represent their airline well, thank you! Stop having Kayak sell your tickets"
Cons: "All the extra charges for anything other Seat on the plane. I don't blame Icelandair for this, I blame Kayak for it. Kayak really suck at informing customers about the services offered by Icelandair, I would have bought a better ticket if I was given all the info to make a informed decision"
Pros: "Nothing"
Cons: "It was a very uncomfortable flight as there was a box under the seat in front of seat 26E so I could not get comfortable and I’m only 5’7”. As it’s in the middle of the plane they we were the last row to be served"
Pros: "We had exit row seats that had more room in the front."
Cons: "1) While there is more room in the front, there is less room in the width because the trays are built into the armrests instead of in the seat in the front. Because of that, the armrests take more space below and remain static, while the normal armrests can be lifted up and have nothing below the armrest. 2) The text describing the "deal" for the exit row, which costs more, said that the seats have limited recline compared to normal seats. The fact is that the window seat did not recline at all. The button stayed pushed in all the way and the seat would not move at all. We do not know whether it was broken or intentionally disabled. 3) The attendant's approach was somewhat dismissive at first, but on the good side, she quickly rectified and came through with offers and a more understanding attitude, she was nice. 4) We brought this up to the flight attendants' attention, but the best they could do was to give us 1 free headset and any food we wanted. This was not much since we did not want the food. A refund for that extra payment for that seat would have been a better move. 5) The middle seat (it's a row of 3), has a metal box hanging from the front seat, taking a bit more than half the width of the space, so you can only put your feet under the right side of the front seat. 6) I don't think we'll do exit rows again on Icelandair. We did it before on other airlines with good results. 7) Not sure how the prices compare per mile with other airlines really, but on Icelandair, if you get the "Economy Standard", you really don't get much, no peanuts or snacks, no food, only soft drinks, no video games, only movies and music, and you have to bring your own headset or buy one, along with that the better classes of service run out quickly (I booked maybe 6 months ahead) and are rather spendy in comparison with standard."
Pros: "Staff was friendly and accommodating!"
Cons: "You had to purchase food for the 7 hour flight I had from Seattle to Reykjavík. I was hoping for a complimentary meal since it was a long flight."
Pros: "Bottle of water at boarding"
Cons: "Crew from denver to Reykjavík were rude. My wife and I travel regularly for business and these girls were short, annoyed and just unprofessional. Couple that with the plane being abnormally hot (for the whole flight) it was pretty bad. I understand it must be hard to work in this industry, but these girls were just plain bad. Probably won’t fly Iceland Air again."
Cons: "Iceland Air did not pick up our baggage from the transfer area in Seattle. Ultimately spent three days in Paris without our luggage. Poor communication from Iceland Air regarding the whereabouts of our baggage. Bad experience!!!"
Pros: "Entertainment selection was very impressive. Very good customer service after our bags were delayed by the plane sliding off the runway. They were super accommodating of my travel plans and delivered my bags to me three hours away from the airport."
Cons: "The flight attendants were extremely rude. They also were very conflicting with their directions for the exit row seats. One attendant would situate you and your belongings and then the next would come and make you move everything and this happened more than once before taking off. The attendants were also giving away seats that people had tickets for and forcing a lot of people to move seats more than once. They also would not take trash more than the one time about an hour after the drinks service, so slow drinkers were forced to keep all their trash for the entire flight and ending up leaving it in the seats because no one is going to take their trash off the plane with them when they had asked the flight attendants to take it during the flight and were refused. Also for a 7 hour flight, at least offering pretzels would be polite. The plane slid off the runway upon arrival and then we had to wait 2 hours for a ground crew to come with stairs and a bus to unload us. Communication to the customers was extremely poor during this time, we had almost no idea what was happening, and with where our bags were, we waited in the airport for an hour before they announced that they wouldn’t be unloading our bags for another few hours."
Cons: "This was horrible. I purchased a ticket on Iceland Air leaving Seaattle at 410pm. However when I went to check in I had been bumped to an earlier flight on Delta!! I can’t believe a person buys a ticket on one airline and it gets changed. How does this happen?"
Cons: "The airline charged me $95 to check a single bag after refusing to honor the fee I paid to a third party when I booked the flight. Avoid Icelandair and Justfly."
Pros: "I was transferred to a direct British Airways flight to Heathrow that arrived in a time-frame that was close to when I would have arrived there on the Icelandair service. The transfer (including check-in luggage) was completed rapidly with minimal inconvenience which was appreciated"
Cons: "The scheduled Icelandair flight was cancelled at late notice because the aircraft was unavailable. I defective part could not be delivered and fitted in time for the aircraft to be available at Sea-Tac airport."
Pros: "The flight went exactly to plan. The cabin crew was very friendly and the seats were comfortable. I like the transfer in Iceland, because it allows you to stretch your legs on the long haul from the West Coast to Europe, and generally only adds about an hour to the total flight time."
Cons: "Nothing"
Pros: "Boarded so quickly! Very efficient. Checked baggage also arrived quickly at final destination."
Cons: "A little unclear on both legs which Icelandair was boarding because they didn't change the sign at the gate and had another flight directly prior. "Last call for IcelandAir" - confusing messaging. Same thing at second location - started boarding but sign didn't change so if you arrived after they made the call you couldn't tell which flight without asking reception."
Pros: "The flight went very well, and a little faster than what I'm used to on other airlines."
Cons: "Meals and/or more meal options but I also understand you sacrifice this comfort given the discounted prices for flights."
Cons: "In the last week I have flown Iceland Air three times. The airline was a not efficient and caused me to sit in two different airports for over 16 hours and cost me to miss a day of vacation and extra expenses to accomidate them. This has been a disaster only because of this airline. Next time I plan on using British airways, the flight I took with them was amazing and effortless on my part"
Pros: "Seating was adequate and comfortable enough."
Cons: "Flight was delayed, but not shown as late on monitors. I only knew because I checked online. Once on board the plane, I heard that the incoming plane had been delayed, but there was never any announcement made prior to that. Surprised that I had to pay for food on flight, given the lateness and inconvenience of delay, plus what was available was very expensive."
Cons: "No food is served for economy level and the food available to purchase was very limited and expensive Also entertainment had mostly old movies and being your own headphones or pay for one"
Pros: "The crew, amenities, and service were great!"
Cons: "Didn't enjoy having to be transported to the train by bus in Reykjavik, since there wasn't a jet bridge connecting the departure level of the terminal to the plane."
Cons: "Bad entertainment, almost no new movies. No meal or drinks on international flight, food for purchased was not as advertised."
Pros: "Crew were polite, though they didn't hand pillows and blankets out to everyone. I declined a blanket, since I had one from the first flight, but was never offered a pillow, which I would have accepted. The style of this plane provided a ton of head space, which was really nice."
Cons: "The seats were really uncomfortable for such a long flight. Also, the entertainment system was having trouble for half the flight before they finally fixed it."
Pros: "My seat was actually not too uncomfortable. I had travelled on Iceland air a few years ago and thought the seats were pretty tight and uncomfortable. This was better."
Cons: "Minimal beverages. Must bring your own snacks as they are only for purchase."
Pros: "The blankets were nice and long."
Cons: "I called in several days in advance to reserve a seat next to my brother. When I got to the airport they said that I didn't even have a seat. The airline stewardess kept running into me without acknowledging that she did, even though I wasn't in the aisle. This happened three or four times. I tried to ask her to stop and she didn't seem to hear me. The sound for my seat's audio entertainment system didn't work. It didn't work for my brother who was sitting next to me. They did not serve complimentary snacks or a meal for a 7.5 hour flight that started at 4:30pm."
Pros: "Friendly and helpful staff, and a very smooth ride. They had a lot of movies for in flight entertainment as well- I recommend the Iceland air documentaries!"
Cons: "No free in flight food, however there were lovely options to purchase!"
Pros: "Staff was friendly"
Cons: "There was no way to reserve seats for the flight. I made our reservations eight months in advance and there was no way via kayak or Icelandair to choose seats. When we tried calling the airline, they told us we needed to call back 36 hours before the flight. When we called 36 hours before the flight they told us all of the seats were alr day taken and we needed to speak to the agent when we checked in. When we were given seat assignments at checkin and asked why we'd had no input into the seat selection, they said we should have called in advance. It was really frustrating, especially because we ended up in th back of the plane. I was in a middle seat, winch don't have any space for a bag under the seats in front of them. Then there were no meals served on the overnight flight. I bought a small salad for 12 euros. I have never in my life taken an overnight flight where they don't serve at least dinner, if not both dinner and breakfast. The flight was on time and the attendants were friendly, but I wasn't terribly impressed otherwise."
Pros: "Flight was on time"
Cons: "Could not select seats when booking 3 months out. Could only do this 24hr in advance. No app to checking/select seats. Had to be on computer. 7 hours and no food for free? Had to buy a $9 roll with some ham and cheese slapped on. Only came by with drink/water 2 times in 7 hours."
Cons: "We didn't actually make the flight due to a fiasco with our shuttle company. We called the third-party company to assist with changing flights and, after 40 minutes on hold, JustFly.com said there was nothing they could do and that we needed to contact IcelandAir. After another 60 minutes on hold IcelandAir said there was nothing they could do except rebook us on a new ticket. $2000 later we finally got to go on our honeymoon. Long story short we had to buy all new tickets. JustFly.com only refunded $200 of our original ticket cost after assessing numerous cancellation fees (over $700 in cancel fees). We won't be booming JustFly again. Happy Honeymoon to us, once we finally got there."
Pros: "Overall this was a good flight! I'd recommend Iceland Air for budget flying and just bring a few snacks."
Cons: "I'd honestly rather there be no food than gross airplane food so no real complaints. I appreciate the price!"
Pros: "I enjoyhed the entertainment on the flight. Great movies and tv selections."
Cons: "It was the first international flight I've ever been on where no meals were included in the price, so it was a disappointment that we were not given any complimentary meals or snacks, especially for such a long flight through dinner time."
Pros: "The 2nd flight waited for the delayed flight from NY which was much appreciated."
Pros: "Nice and quiet flight."
Cons: "Menu is limited for vegetarian options, but the flight attendant was great at helping to find options."
Pros: "They gave a complimentary meal to my child immediately after take-off."
Cons: "Lost my luggage-- no customer service to recover my luggage. No reimbursement for days without luggage. The flight was insanely hot. It was simply not worth saving a hundred or two hundred bucks to fly this airline and I've never felt that way about a flight."
Pros: "The crew was quick and kept us informed; the iPads were a pleasant surprise and a nice addition to a flight"
Cons: "No communication with passengers regarding delayed boarding and absolutely NO announcements to board. Everyone lined up and just waited until they started letting us through, so it didn't even matter what seat you got, it all depended on how close you were to the front of the line. Completely ridiculous. Keflavik Airport was too congested with no consideration given to pedestrian traffic while trying to board an entire plane. Massive jams."
Pros: "On time. Most important"
Cons: "Short lay over. 1 hour. Bag did not make it. Poor entertainment system. No current films. Audio poor. Airport in Iceland has awkward arrival with long lines up one staircase to passport control."
Pros: "The price is right, free bags, on time."
Cons: "No free food and purchased is so"
Pros: "For economy class the leg room was actually decent."
Cons: "On every other international flight I have flown on meals and drinks are included. Kind of ridiculous you paid for these things individually on the flight b"
Pros: "I like the price and the opportunity to do a stop over in Iceland. Generally crew was nice going into the plane and leaving the plane."
Cons: "Plane was outdated and older with USB ports not working. The crew had forgotten about drinks I asked for several times. I was disappointed that the fight didn't offer free booze and food like other airlines. The crew made me feel like I was bothering them. The crew and passengers were inconsiderate and would constantly slam my arm while walking in the isle way. It was annoying from passengers, but unbelievable from the crew. I got no sleep and it was infuriating. Worse flights I have experienced, may have been better if I had a window seat."
Cons: "I was very uncomfortable during my whole flight. The seats were extremely small and I could barely stretch my legs and I am a woman of average height and weight. The man next to me was taking up part of my seat as well, which again, wasn't his fault because the seats were child-sized. I was again unhappy with the lack of any sort of complimentary food. This was my 2nd flight with IceLand Air (Chicago to Rekjavik, Rekjavik to London) which is quite a long trip to go without being offered something."
Pros: "I liked the fact that there were options on the entertainment that were from Iceland - not just the usual American things. All crew were friendly and helpful."
Cons: "There was not time to get to my connecting flight in Iceland without running and asking repeatedly to go to the front of the passport line - it was awkward and stressful. I was ASSURED over the phone that there would be plenty of time - I almost didn't make it."
Pros: "Check in and boarding experience were erfect."
Cons: "Seats throughout majority of aircraft (I.e., Economy section) are flattened from overuse, so they are hard and uncomfortable."
Pros: "Flight crew was super nice, I got an exit row window seat on a last minute booking, it wasn't crowded, and we got to see the northern lights! We spent almost an extra hour on the ground in Seattle for maintenance (I'm ALWAYS in favor of spending as much time as needed for a safe plane. :-) ) so I thought I would miss my connection. I had no worries because getting stuck in Iceland actually sounded pretty cool, but Icelandair held the next flight for those of us on this flight and guided us straight over there. I will definitely fly Icelandair again!"
Cons: "No free snacks, but I'm ok with that. Some people wouldn't be."
Pros: "Luggage made all the very short connections, which has never been the case with other airlines such as BA, Air Nez Zealand, Delta and AA."
Cons: "pay for food"
Pros: "Good"
Cons: "Good"
Pros: "The crew."
Cons: "Fake marketing! They said it will be some snacks for economyXtra, and then 2 hours before the flight sending an email saying that the snakes will be charged! Disappointed!"
Cons: "I paid Xtraeconomy to have some snacks during the fly, and they end up coming with a trolley to pay! Disappointed!"
Pros: "The crew were very nice overall but one flight attendant in particular was incredible. I didn’t get a name but he was friendly, welcoming, and kind."
Cons: "I sat in an emergency row with an empty seat to my left and really did not like how the passenger in the row behind me kept getting up and walking into my row to get his stuff from the bins."
Pros: "Sleeping and being left alone"
Cons: "Food, Service by cabin crew because they never smiled"
Pros: "Amazing punctuality, both on the way out to Lisbon and on the return to London."
Cons: "Cannot really think of anything that needed attention on these flights."
Pros: "Super friendly"
Cons: "Maybe a hot meal?"
Cons: "Boarding process was in fact dangerous, with people corralled into small spaces without letting them out on the other end. We felt claustrophobic, crushed, and at one point people were even having to jump over the escalator to the bus loading area because there was too much crowding. Dangerous"
Cons: "So many delays, no real info provided. When we had to stay overnight they didn’t mention it would take 4 hours to get our bags which actually never came. Airline industry sucks and deltas one of the worst."
Cons: "Not cancelling it"
Pros: "The overall experience was great"
Cons: "It was indeed a good experience"
Pros: "flight was more than 4 hours late!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
Cons: "flight was more than 4 hours late!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
Pros: "Very on time, smooth take off and landing and friendly staff."
Cons: "Perhaps spirits offered other than just wine. And a vegetarian food option."
Cons: "Passport control in Lisbon was awful and many people missed their flight in spite of them being made aware of the issue."
Pros: "clean and fast"
Cons: "use airport finger in Lisbon airport"
Pros: "A short but very pleasant flight and food was served, excellent in every category."
Cons: "Nothing, it was the best short flight I've ever had. The staff were very attentive and did a great job of keeping everyone happy."
Pros: "Really nice crew, good food and wine, very attentive and accommodating. I’m used to flying spirit and Norwegian and this was a huge upgrade, though there’s not much in flight entertainment. Definitely good and cheap. Will fly again."
Pros: "Flight crew were nice plane arrived safely"
Cons: "They nickel and dime you. I paid for extra leg room and then on way over made me pay to check bag (which was supposed to be free) and way back switched planes so never got extra room and had to pay for bag as well and now have to fight for my money back. I don’t like the feeling of having to always pay. If you want people to not carry on so much stop charging (especially on international flights) to check bags."
Pros: "Nothing"
Cons: "Everything"
Pros: "Surprised and delighted to be served a tasty sandwich and fruit drink plus glass of wine on a 3 pm 2 + hr flight from Lisbon to London"
Cons: "Seats uncomfortable"
Pros: "Clean modern aircraft"
Cons: "Left 35 minutes late; had to take a bus to the plane in Lisbon (no gate)"
Pros: "Refuel was quick and we were back on air in less than 30 min... Wich was great.."
Pros: "Flight was only 15 minutes late"
Cons: "Food and drink (esp. non-alcoholic) is terrible. Not offering a vegetarian option - even on short haul - is ridiculous in the 21st century."
Cons: "Even though I paid for my seats they weren't reserved and I had to request new ones. I paid €80 for them so I'd imagine they would have been reserved. Then they took my blanket when we were getting close with no explanation even though I was cold. I don't get this airline."
Cons: "I don't think I have ever rated any service negatively, but here's my first. TAP completely ruined my birthday trip that I have saved up for a long time for. DO NOT TRAVEL WITH THEM! I had a valid Schengen tourist visa issued by the Consulate of Portugal. At the time of visa issuance, the printer of the Consulate was not functioning, so part of the visa information was hand-written, but it was properly signed and stamped. The Consulate told me it's valid and said they have been doing so for ten years. The Consulate also said that they, not the airlines, have the sole authority to determine the validity of the visa. When I went to the airport to check in with TAP, TAP staff denied me boarding because they did not believe my visa was valid. I only learned later that this action was inconsistent with TAP's own internal policies. The staff at the kiosk told me that I could either ask for a refund or rebooking of the ticket. But when I called TAP the next day, I was told I could not get a refund even though they should not have denied me boarding. I called TAP many times and got a different answer each time. They simply refuse to compensate me for their own mistake. It's the most horrible travel experience I've ever had!"
Cons: "The food was not available for the business class passengers and we had to take it from economy."
Pros: "Same as above."
Cons: "Same as above."
Pros: "The crew did a great job."
Cons: "The boarding process was nutz. We had to take a bus away from the terminal to board the plane. The flight was delayed. I was not very happy to have to spend $92 to check 2 bags."
Pros: "Flight on time and safe Crew very pleasant"
Cons: "Cramped seating Boarding dreadfully slow"
Pros: "the food , drink and the crew"
Cons: "seats not very comfortable. plane full up"
Cons: "We booked flight several months ago and it included seating assignment, so we choose our seats. Then when we check-in they had changed them to the last row of the plane. We had received a couple of emails asking for us for option to pay for advance seating. Assume they had changed their policy and now were charging. We had a close connection at LHR and being last off, we almost missed connection. Horrible"
Cons: "The delay on the take off"
Cons: "We had to postpone our first leg from London to Lisbon by a day and then they cancelled our return flight without telling us!!! So, we were trapped in Lisbon with no flight to return home. We called them and they said, "we cancelled your tickets and only have business class seats available for you and your toddler." We said no thank you. If we were going to spend 1k on a return flight, we were going to take British Airways. TAP, never again."
Cons: "The service was below average, nobody seems to be eager to assist. The food that was offered on the flight was below expectations. The company should work on improving customer care"
Pros: "There was great entertainment on the first flight"
Cons: "No vegetarian option The last seats mean can't lean backwards when someone in front goes backwards :("
Pros: "Crew friendliness and attention"
Cons: "They ran out of diet coke and coke zero literally right after takeoff which is a joke!"
Pros: "I was very impressed with the Ground crew who met me off the plane and had already arranged for me to go on a later flight with Emirates. If it had been possible to let me know when I was on the first flight that my onward travel had been arranged then it would have been perfect."
Cons: "my TAP Portugal flight from Lisbon to Heathrow was so late I missed my connection to AbuDhabi."
Cons: "The lady changed my 11H seat for another seat (29B) when I claim that this is not fear , a man said to me that if I insist in this matter he will not let me in Or flight , for me this was an abuse"
Cons: "Limited leg room."
Pros: "Everything was perfect! The staff was friendly and the food was nice. I found that there was more leg room than on other airlines."
Cons: "I used TAP to depart beautiful Portugal."
Pros: "Not much. Lunch"
Cons: "We paid to check the bag In and when we arrived the girl could not see this. We showed her clearly the paper then she charged ya and realised she had made a mistake but couldn't refund us. Terrible experience. Don't use the."
Pros: "Flights were on-time, planes were clean/newer, snacks were good."
Pros: "Wow!!!! I had never heard of this airline before booking our trip but goodness this was a blessing. They were so polite in the flight. They always came past to check to see if a passenger needed anything. Free bags is amazing then free pillows blankets and headphones I really hope I get to fly with them on my next flight abroad"
Cons: "Nada"
Pros: "The flight was fine, no issues. Plane was fine, no WIFI or entertainment. Served a small meal. For the price, excellent trip."
Cons: "All was good."
Pros: "My first time flying tap and I was impressed. Everyone was friendly and helpful. Planes seemed very clean, and gave me the impression that they are probably well maintained."
Pros: "Shitty service , terrible food , stay away"
Cons: "Horrible food , worst flight attendants , boarding was a joke . Star alliance needs to cut them !"
Pros: "Ask persons for veg or non veg snacks before u served please."
Pros: "Lots of flight options."
Cons: "Both outbound and inbound flights late, no real explanation for inbound. Boarding on inbound was chaotic."
Cons: "I had food poisoning from the ricota pasta I ate in the plane."

I’m very happy! Very helpful all personals , so happy with service! A++++++! Want fly again! Highly recommended! Thanks for your service!

The BA staff at the rear of the plane were extremely helpful and professional. Very unfortunately for me, I had developed a cough prior to flying, and when a couple of passengers complained they handled the situation very professionally and did not make things in any way awkward for me. Would most certainly recommend BA/Iberia to my friends for future travel.

Cons: "My checked bag did not make it to London, and it’s really affected my short stay which requires a lot of traveling around England."
Cons: "Missed my transfer in London because the plane took too long to unboard and I was unable to make it to the gates of my next flight in time, despite there being over an hour connection time. The flight came in slightly late and passports were re-inspected upon unboarding which wasted a lot of time, and Heathrow is a nightmare of an airport on a good day, which made it very difficult to get where I needed to go."
Cons: "This flight was cancelled"
Pros: "Even with some departure delays we landed on time."
Cons: "The plane could have used some cosmetic detailing. The door to a cabinet in the bathroom would not shut and caused a problem with people being able to close the bathroom door."
Pros: "Arriving ahead of time"
Cons: "Too hot in the plane"
Pros: "Not a lot."
Cons: "Arriving at the gate whilst the flight was still boarding, with a boarding pass in my hand, and being told that my seat had been given to someone else because the Airline unilaterally decided that my connecting flight from Bogotá would not arrive in time. Followed by two hours of Iberia staff being surly, not looking me in they eye and doing absolutely nothing about getting me home. I have now been travelling for nearly 30 hours without sleep, am stuck in Madrid with no certainty of when or how I will get home or see my luggage again, and am seriously seriously pissed off. I do accept that things can sometimes go wrong and that it is nobody’s fault. This is definitely somebody’s fault."
Pros: "Every thing was ok"
Cons: "N/A"
Pros: "It was a very busy due to the fact that we,left 40imutes late and Iberia was also late when we left Madrid but they took care of me to make sure I did not miss the connecting flight"
Cons: "The food could be better"
Pros: "The food was nice."
Cons: "There was no water in business class toilets. The staff are not polite."
Cons: "I was not able to check in online"
Pros: "The screens on a dozen seats just failed a few hours in - engineering issue. And breakfast was a cold pretzel. Food gets let’s generous on BA all the time. The crew were lovely."
Cons: "A 2330 Flight ran significantly late with a passenger delay and then de-icing. The repeated assurances of “a 10 minute or so delay” were obviously not correct. Takeoff close to 0100 was followed by drinks AND then food - my vote would be neither. Please oh please just let us sleep."
Pros: "Heathrow Airport has a lot of stores to keep you occupied"
Cons: "Late notice of where our gate was located. By the time we got the news, we went to our gate and the people were already boarding"
Pros: "Crew was nice and I had a great flight with Iberia on my flight from Chicago to Madrid"
Cons: "I am 6 feet 180 pounds and I had absolutely no legroom was completely stuck in my seat can’t believe that a tourist class seat is this small with no legroom"
Pros: "That I arrived"
Cons: "Iberia flight was delayed by 45 minutes causing me to miss my connection from London to Dublin."
Cons: "In flight entertainment didn't work and crew wasn't concerned and didn't do anything about it."
Pros: "Airbus 320"
Cons: "Boarding process and pitiful legroom space . Iberia clearly loves showing the privileged few who have paid top dollars to be at the front , that we must be made to wait and struggle to get to our seats .Then, we have to squeeze into a tiny , pitiful space of a seat .....Even Ryanair does better !"
Pros: "Flight was safe, aircraft was clean and luckily with enough room under the seat to store carry on bag"
Cons: "The fact that all the passengers boarding in "group 3" were forced to check in their carry-on bags if they did not fit under the seat; and retrieve those at the baggage claim area (not right after exiting the airplane) In my case I was able to store my carryon under the seat in front of me after pleading to the crew and gate members to let me try because of my connecting flights. There is no complimentary food service, even water is charged."
Cons: "I stopped at the Iberia check-in at Barajas in Madrid. They sent me to BA check-in, where I waited 45 minutes to find out that I should be at Iberia check-in. Then, Iberia check-in had to send me to last minute clerk or I would have missed my flight. Last minute check-in ended up being the same place and same clerk I began with."
Cons: "A porter checked our bags at the gate without asking us whether we were traveling beyond London, so the bags were never transferred to the transatlantic flight nor did they arrive in SF. It wasn't necessary to check them because there was plenty of room in the overhead bins when we got on the flight. We immediately asked a flight attendant to help when I realized they might not go through and he said he spoke to someone who caught and tagged the bags to go through, but it still didn't happen. It would have been easier if he had just brought them to us on the plane. Another women's bag was taken with all her baby supplies and bottles in it for a 16-hour travel day. Very frustrating for all of us."
Pros: "Arrived on time"
Cons: "The seat pitch was so small my knees were hard against the seat in front of me for 1.5 hours and I was miserable the whole time. To put this in perspective this was the most uncomfortable I have ever been on an airplane. My legs hurt the whole flight. This was the first leg of an expensive international flight and given the price of the 2 legs I should have been upgraded to a more comfortable seat. My flight to Europe on Iberia was excellent. However based on this bad experience I plan to avoid Iberia in the future because they treat their high price paying customers poorly. Peter Valorz Valorzp@yahoo.com."
Cons: "Food could have been better."
Pros: "Everything abou the airline. The boarding was quick, the flight crew were wonderful, the flight was clean and smooth."
Cons: "Passengers moved their seats all the way back without considering people behind them. Very small leg room."
Cons: "Very pleased with overall service and hospitality"
Pros: "Nothing stood out."
Cons: "Late. Ineffective boarding - announcement said we would board by row, but actual boarding was by mass crowding, with no attempt by crew to improve matters. No recognition of dwindling baggage storage space meant that I had to cram my suitcase under the seat, and spend the 2.5 hour flight with my legs jammed against it."
Cons: "Upon boarding the aircraft was really hot, I was sweating in my seat... I did not receive any complementary drinks or snacks."
Pros: "Movies, no delays"
Cons: "Luggage was not documented correctly to my final destination by Iberia"
Pros: "Comfortable flights & on time"
Cons: "Service, flight crew seemed to busy chatting instead of serving."
Pros: "Easy check in and comfortable seats"
Pros: "Flight attendant didnt help to pup up my luggage; even water was not free"
Cons: "Too little time to connect with another flight at Heathrow. Missed my connecting flight. Why is there an additional security checkpoint at Heathrow when you've already been thru security at another airport? Poor design for international arrivals."
Pros: "The ease at putting my luggage in.."
Cons: "The prices of the food and drinks!! Ripped off!!"
Pros: "Standard EU flight, on time"
Cons: "Had to buy food and the sandwiches were soggy. Wouldn't accept credit cards at first, staff tried to push cash payment until finally getting a different credit card readee that worked."
Pros: "We were overall very pleased with everything about, thank you!"
Pros: "The flight overall was very comfortable and the crew were very accommodating and attentive."
Cons: "About halfway through the flight got diverted to drop off a critically ill passenger, so instead of it being an 11 hour flight, it was a 16.5 hour flight. Not anyone's fault, but still incredibly inconvenient."
Pros: "The crew was fabulous! And the ride was on time and had plenty of entertainment."
Cons: "My only complaint is that the seats were very tight in the economy class. We were packed like cattle. I know these were the "cheap" seats but for almost $1500 I would hope for a bit more comfort."
Pros: "Nothing"
Cons: "Kept us waiting for five hours"
Pros: "Nothing"
Cons: "There was bad weather which understandably caused delays, however the communication during this eventual 16 hour delay was horrendous. We were told for the first two hours that we would be delayed each hour and then they would make a decision to delay another hour. This went on for 4 hours (the last two hours of which we did not receive any updates). The flight was originally scheduled to leave at 8:10. At 12:30am we were told our plane was at the gate and being prepared for us to board and the agent giving announcements said we were "guaranteed to leave TONIGHT". At 1am we were told that unfortunately the plane got to the gate just a bit too late and not the crew are not legally allowed to fly and the flight would be pushed back until 8am. At the time, I thought 7 hours was strange and I'd assume the crew would need more like 8-10 hours to rest. Unfortunately because we were told so late, all hotels were booked up. I live in NYC and would've gone home for the night however because we needed to be back by 6am (what the agent suggested), there seemed no point in leaving. We were not provided with any pillows or blankets until 4 in the morning. At 6am the next morning, we were told the crew needed "more rest time" and that our new departure time would be 9:30. How is it that the crew now needs more time? Shouldn't that have been figured out at 1am? Before we board, one of the agents thinks they will "lighten the mood" with the following comment - "Who would've thought a little bad weather would've caused this?" Absolutely not a time for jokes and people were very angry. We finally board for what we think is finally a 9:30am take off. No - now two new issues - 1, the co pilot is late (LATE? how can you be late when a flight has been delayed 16 hours) and 2, they needed to remove package from the plane for people who were no longer taking this flight. In the end, we took off around 11:30am which messed up a lot of peoples connecting flights, pick ups at the airport, etc. I will never fly this airline again."
Pros: "Guests were boarded quickly. Crew was friendly."
Cons: "Food was tasteless and bland. Crew was not very attentive."
Cons: "The seat did not recline, a bit ridiculous for a plane that size"
Cons: "The fight from Chicago to London was a nightmare."
Pros: "Best transatlantic flight for a long time. More legroom quiet and delays were communicated well"
Cons: "Would have liked another couple rounds of water"
Cons: "You get on a flight and you can't even get water without paying for it. How cheap can you get. I got better service from Ryan Air."
Pros: "Spaciousness of aircraft, comfort of aircraft (vibration, noise)"
Cons: "not enough leg room. and i have to point out that I am a petite 110 lbs, 5'2" woman. although the flight is short, a complimentary snack and drink would have been nice. instead, you had to pay for anything you wanted. prices on top of that, were exaggerated. very disappointing."
Pros: "I requested special assistance (wheelchair) at the last minute, no problem. Plane left on time and arrived early. Fodder was OK, no great. Complimentary wine on the international flight I'd appreciated! Staff very friendly and efficient. Nice job, American Airlines!"
Cons: "Didn't have individual TV screens, not really a biggie, but it is nice when that I'd available."
Pros: "Great flight attendants."
Cons: "Plane needs wi fi and USB ports. It was a dinosaur ! Cramped seating. Expensive!"
Pros: "Good movie selection"
Cons: "VERY cramped"
Pros: "The flight from Raleigh to Heathrow London was LONG, so I especially enjoyed the wine being included without extra cost! Wine helped me to relax, read, & survive the long sleepless night!"
COVID-19 information

Safety measures for airlines flying from Seattle to London Heathrow Airport

Airlines flying from Seattle to London Heathrow Airport have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Seattle to London Heathrow Airport

Mandatory masks

Masks required on board, masks provided on flights from Seattle to London Heathrow Airport

Social distancing seating

Middle seats unavailable to book on flights from Seattle to London Heathrow Airport

Pre-flight testing

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Seattle - London Heathrow Airport Flights

Departure:

Seattle (SEA)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

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London Heathrow Airport - Seattle

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$2,323
$1,124
$421

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