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SEA - LHR

$249 Find cheap flights from Seattle to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Heathrow departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 5/24
Fri 5/31

Search hundreds of travel sites at once for deals on flights to London Heathrow Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to London.
In the last 7 days travelers have searched 45,119,101 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Heathrow (SEA-LHR)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:50 pm - 11:55 amSEA-LHR
12h 05m1 stop
9:25 pm - 5:55 pmLHR-SEA
28h 30m1 stop
$602Icelandair
Find Deal
Mon, Sep 30 - Tue, Oct 8
3:50 pm - 8:20 pmSEA-LHR
20h 30m1 stop
1:05 pm - 5:55 pmLHR-SEA
12h 50m1 stop
$604Icelandair
Find Deal
Mon, Sep 30 - Tue, Oct 8
3:50 pm - 11:55 amSEA-LHR
12h 05m1 stop
12:15 pm - 6:00 pmLHR-SEA
12h 45m1 stop
$605Icelandair
Find Deal
Tue, Oct 15 - Tue, Oct 29
4:30 pm - 9:50 amSEA-LHR
9h 20mnonstop
6:15 am - 11:20 amLHR-SEA
13h 05m1 stop
$646Delta
Find Deal
Sun, Sep 29 - Thu, Oct 10
5:30 pm - 4:30 pmSEA-LHR
15h 00m1 stop
6:15 am - 11:20 amLHR-SEA
13h 05m1 stop
$650Delta
Find Deal
Tue, Oct 1 - Thu, Oct 10
7:40 pm - 1:00 pmSEA-LHR
9h 20mnonstop
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
$652British Airways
Find Deal
Wed, Oct 2 - Wed, Oct 16
1:45 pm - 12:10 pmSEA-LHR
14h 25m1 stop
4:00 pm - 5:45 pmLHR-SEA
9h 45mnonstop
$655American Airlines
Find Deal
Tue, Oct 1 - Wed, Oct 9
7:40 pm - 1:00 pmSEA-LHR
9h 20mnonstop
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
$695British Airways
Find Deal
Wed, Sep 18 - Wed, Sep 25
9:15 pm - 2:50 pmSEA-LHR
9h 35mnonstop
6:15 am - 11:20 amLHR-SEA
13h 05m1 stop
$696Virgin Atlantic
Find Deal
Thu, Sep 19 - Thu, Sep 26
7:37 am - 7:30 amSEA-LHR
15h 53m1 stop
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
$705American Airlines
Find Deal
Thu, Oct 3 - Tue, Oct 8

Flights from Seattle to Heathrow - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Heathrow to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to London Heathrow Airport?

The average price of all flights from Seattle to London Heathrow Airport clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to London Heathrow Airport on a Wednesday, as we generally find the cheapest rates on that day for this route. On the other hand, Thursday is the most expensive day to fly from Seattle to London Heathrow Airport. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from Seattle to London Heathrow Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to London Heathrow Airport is February, where tickets cost $693 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,172 and $1,142 respectively.

How far in advance should I book a flight from Seattle to London Heathrow Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to London Heathrow Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to London Heathrow Airport, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 62 days before departure.

Which airlines provide the cheapest flights from Seattle to London Heathrow Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Icelandair ($249) and Lufthansa ($385). The cheapest round-trip tickets were found on Icelandair ($602) and Air Canada ($636).

Which airlines fly most frequently between Seattle and London Heathrow Airport?

British Airways connects Seattle to London Heathrow Airport with up to 5 flights per day. Delta also offers 1 flight per day, while Virgin Atlantic follows with 1 flight per day.

Which airlines fly non-stop between Seattle and London Heathrow Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to London Heathrow Airport.
There are 3 airlines that fly nonstop from Seattle to London Heathrow Airport. They are: British Airways, Delta and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at $632 for a one-way flight. On average, the best prices for this route can be found at Virgin Atlantic.

How many flights are there between Seattle and London Heathrow Airport per day?

Each day, there are between 7 and 9 nonstop flights that take off from Seattle and land in London Heathrow Airport, with an average flight time of 9h 24m. The most common departure time is 7:00 pm and most flights take off in the evening. Each week, there are 57 flights. The most frequent day of departure is Thursday, when 16% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Seattle and London Heathrow Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to London Heathrow Airport take?

Direct flights take on average 9h 20m to travel the 4,783 miles between Seattle and London Heathrow Airport.

What’s the earliest departure time from Seattle to London Heathrow Airport?

Early birds can take the earliest flight from Seattle at 1:30 pm and will be landing in London Heathrow Airport at 6:50 am.

What’s the latest departure time from Seattle to London Heathrow Airport?

If you prefer to fly at night, the latest flight from Seattle to London Heathrow Airport jets off at 9:10 pm and lands at 2:50 pm.

Good to know

Low season

January

High season

June

Cheapest flight

$249
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 30% increase in price.
Flight from Seattle to London Heathrow Airport

When to book flights from Seattle to Heathrow

Are your dates flexible? Find out the best times to travel from Seattle to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to London Heathrow Airport flights

  • Where can passengers spend the night at Seattle Tacoma international airport?

    If you are having an early morning flight at Seattle Tacoma international airport and want to spend the night at the airport, there are armrest seats and benches. You can also bring a sleeping bag and heavy clothes to lay on one of the floors with carpets. Passengers can use the meditation room, which provides a peaceful and quiet place. We recommend passengers carry noise-canceling headphones and earplugs to avoid loud noises from the busy airport. Passengers willing to spend extra money can spend the night at the nearby hotels. Nearby hotels offering free shuttle services to and from the airport include Crowne Plaza Seattle Airport, Radisson Hotel Seattle Airport and La Quinta Inn & Suites Seattle SeaTac airport.

  • Does Seattle Tacoma international airport offer parking services?

    Passengers who want to leave their vehicle at the airport can reserve a parking lot by booking online before to avoid inconveniences. Seattle Tacoma international airport offers long-term and short-term parking services. The long-term parking is located on the fourth floor of the parking garage. There are also self-service kiosks outside gates B, C, D, N and S, where passengers can download their favorite movies for their trip.

  • Which services are available at Seattle Tacoma international airport?

    If you arrive early at Seattle Tacoma international airport, enjoy the services offered at the airport. Loosen your stiff muscles at the massage bars near gate A5 on the airside of level 5. Passengers who want to freshen up can take advantage of Delta airlines sky club.

  • Where can passengers spend time on arrival at London Heathrow airport?

    Traveling can sometimes be cumbersome, and passengers may want to relax or take a nap after arrival. Aerotol London Heathrow airport, located inside LHR airport, offers guest rooms. Passengers can relax and finish work upon arrival at the airport. Plaza Premium Lounge & No. 1 Heathrow is a hotel inside the airport with private napping rooms where passengers can relax. There are also nearby hotels where passengers can relax and have their meals.

  • What is the cheapest flight from Seattle to London Heathrow Airport?

    In the last 3 days, the lowest price for a flight from Seattle to London Heathrow Airport was $249 for a one-way ticket and $602 for a round-trip.

  • Do I need a passport to fly between Seattle and London Heathrow Airport?

    Yes, you’ll need a passport to travel to London Heathrow Airport from Seattle.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to London Heathrow Airport?

    All the following airlines offer inflight Wi-Fi service on the Seattle to London Heathrow Airport flight route: American Airlines, Delta, Air France, KLM, Lufthansa, Virgin Atlantic, United Airlines, and Finnair.

  • Which aircraft models fly most regularly from Seattle to London Heathrow Airport?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the Seattle to London Heathrow Airport flight route.

  • Which airline alliances offer flights from Seattle to London Heathrow Airport?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and London Heathrow Airport, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Seattle to London Heathrow Airport?

    There are nonstop flights from Seattle to London Heathrow Airport on a daily basis.

  • Which is the best airline for flights from Seattle to London, Delta or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from Seattle to London are Delta and Virgin Atlantic. With an average price for the route of $986 and an overall rating of 8.0, Delta is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of $961 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Seattle to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London Heathrow Airport with an airline and back to Seattle with another airline. Booking your flights between Seattle and LHR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from SEA to London Heathrow Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for $568 or less one-way and $779 or less round-trip.
  • If you need any assistance at Seattle Tacoma International Airport (SEA), there are airport volunteers in blue jackets who provide help to stranded passengers. Customer representatives are in red vests with iPads, directing passengers where they wish to go.
  • If you want a quiet place to pray and meditate at London Heathrow Airport (LHR), there are multi-faith prayer rooms. They are located in terminals 2, 3, 4 and 5.
  • Passengers traveling on this route have many options to consider. You can fly directly from Seattle Tacoma international airport to London Heathrow airport using Aer Lingus, Singapore Airlines, Virgin Atlantic, American Airlines, AeroMexico, Delta, KLM, Iberia, Finnair and British Airways. There are also flights with stopovers which are cheaper compared to direct flights.
  • For passengers who want to avoid the stress of carrying heavy bags at London Heathrow airport, there is a company known as Excess Baggage Company providing storage facilities. They are found at terminals 2, 3, 4 and 5.
  • We recommend passengers carry their water bottles since Seattle Tacoma international airport has free water filling stations. The stations are located at gates A20, A5, C2, D1, and S gates and the central terminal.
See more tips

Prefer to fly non-stop from Seattle to London Heathrow Airport?

Find which airlines fly direct from Seattle/Tacoma Intl to Heathrow, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to London Heathrow

Monday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Tuesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Wednesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Thursday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Friday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Saturday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Sunday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

See more direct flights

Nonstop returns

London Heathrow to Seattle/Tacoma Intl

Monday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Tuesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Wednesday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Thursday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Friday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Saturday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

Sunday

Aer Lingus, Aeromexico, Air France, +8 more

Aer Lingus, Aeromexico, +9 more

See more direct flights
See more direct flights

Top 5 airlines serving from Seattle to Heathrow

 
See real verified KAYAK customer reviews for airlines flying from Seattle to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Heathrow? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 11004 reviews
7.5food
8.6crew
8.0entertainment
7.9comfort
8.2boarding
Airline reviews

Had a broken tray in business class. Crew just shrugged it off.

2.0 MediocreShiva, Apr 2024SEA - SFO
Read more about Delta reviews

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Cabin crew on our flight showed lack of any customer service gruff and acting annoyed if you asked anything and I mean anything Example a man on the seat over dropped his beer on my husbands blanket We asked if we could switch out blankets cabin crew Said. No we don’t have any extras OK well can you take the wet one Cabin crew looked disgusted and annoyed Took it no OK or yes just a growl

Quick flight. But cabin crew were very noisy and talking too much, especially when we were seated at the back of the plane trying to sleep through the night .

My ticket was for Premium Economy and all the seats were taken, I was placed in Economy class and I’m looking for a refund.

The delay was an issue. Other than that. Every thing good

Staff didn’t check cabin well for landing seemed more interested in chatting to each other. Food was poor and differed from pre order.

We were in the last group to be called to the flight - which was 30 minutes late taking off. While we were lucky enough to have been given bulkhead seats (due to a medical condition I’d told them about beforehand) the seats weren’t particularly comfortable. A crying baby for the whole trip made things worse, so the crew managed very well with coping. The final thing I’d say was that there wasn’t enough food served during the flight.

Very good. Glad we had Premium for the flight out.

We flew Upper Class from London to The Turks and Caicos. Check in was amazing. Our ldriver too us directly to a special entrance to terminal 3. It took 10 minutes to check in and clear customs. Amazing! The VA lounge is large and comfortable. Boarding the flight was easy and without a wait. The crew was excellent. But the seats were awful, strange and uncomfortable. Having a comfortable flat bed seat is the reason we pays 1000s extra. The VA 787 uses a reverse herringbone configuration. Look it up. You have your back to the window and are facing the aisle with no privacy. Turning the seat into a bed requires assistance from the crew so not very spontaneous. . The food was ok. A bit tasteless and meager portions. Had to pay for WiFi. I believe VA has other configuration on their dream airbus flights. Lots of stuff about all this on YouTube where you can see what I have been describing. I can not recommend taking VA on a long flight with these seats.

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff were fantastic friendly nice they came round and check we need anything else to eat or drink

From the start everything was perfectly fine. First meal was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast. Staff for a fantastic friendly nice we came round and check we need anything else to eat or drink

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The return trip was a customer service disaster. American Airlines needs an overhaul of how they treat their customers.

Was flying in premium eco and there were around 5-6 movies I wanted to watch and none of those could I play for some reasons. Not just me we checked w the person sitting next to me. Few of the movies were only playable :( Also that was not great that we couldn't upgrade to business however tried to, many times before the flight :(

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

This was not the BA business class it used to be. Mediocre food, attendants seemed stretched thin. All the little luxuries that used to make BA business fun were missing. Flight delayed and the explanation given was they forgot to pick up crew - I hope I misheard! Transfer in LHR “sticky” - we thought we had way too much time at 3hours but it was needed. Next time will try different route.

I had the exit seat with all the leg room I could ask for. Great!

I wish there were no credit card announcements. I paid hundreds of dollars, I don't need to pay again by sitting through advertisements.

Flight from Phoenix to London was very quiet. Excellent space available for comfort, couldn't fault

Food was very average. And top up drinks offer was absent. For a 11 hour long flight that should be the minimum. The crew didn't want to be there. I understand it was new year day but given they had signed up for it

It was my fault choosing the seat nearest the entrance but it was ok.

I will never fly this airline again. Checking in was poor , we had to go back to the check in counter at Raleigh - Durham international airport three times because they didn’t issue my boarding pass but rather duplicated my husband’s twice which caused a big headache at the passport control at the airport which triggered security alert and wouldn’t let us pass through we we had to wait for long time to be able to explain and clear everything after talking to the supervisor.. No food on the plane , not even crackers. No food was offered to buy ether . No ear phone was provided . Very little time to make from one plane to another and nobody to assist with smooth transition. Flight itself , we felt safe so thank you to the pilots . But customer service was terrible . We spent $ 2500 on 2 tickets, so I cannot say that service was consistent with the price .

Seats are way too much now with these new airplanes especially long flights like we had. I was 7 month pregnant and in a lot of discomfort due to small seats.

Food was horrible. This wasn’t business class. No leg space, can’t sleep in row position, huge delay

I liked how easy my transfers between flights in Keflavik were. I would have appreciated more food options in Keflavik.

The plane was flaming hot! Could not breathe. Everyone coughing from heat. Awful.

My biggest problem was the flight from KEF to DUB was delayed, which caused me to miss my connecting flight in DUB and we were forced into an unplanned 10-hour layover in DUB. Crew and boarding staff were all very friendly but this was a real inconvenience and especially uncomfortable for my disabled wife.

Not much! This was my first flight with Iceland air and unfortunately it wasn’t what I have expected. My luggage is lost nothing as of yet where it was left. Not a good service at all!!

The seat size was more like a domestic than an international flight. In fact, i would compare the ammenities, quality and service to a short hall ryan air flight, which was unexpected for an international flight. The plane was extremely hot so sleeping was difficult. My biggest complaint was that they are very strict on carry on luggage only allowing it to weigh 10kg/22lb. I try to limit myself to a carryon so i don't have to mess with bagage claim, but the wieght restriction made it impossible. I have never had a carry on weight restriction (at least enforced) on an international flight. Will not be including them in future searches.

Pros: "I liked the northern lights look after boarding upon introduction of the captain and crew members. Everyone was super personal and uninformed looked great. The best part was when they started boarding from the last row, which is the most logical and efficient way to do it"
Pros: "Got assisted to the plane by airport staff as I was in a wheelchair"
Cons: "Food on board was awful. Ordered hamburger but not availabe having already pre paid. Pizza was poor quality and had no taste. Range of food disappointing"

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

I've done hundreds of flights in my life, and this flight was one of the best I've ever taken, From beginning to end, everything went smoothly, professionally, and with a smile and friendly attitude from all employees I interacted with. The food was delicious (and free), as were the drinks. There was just a genial and effective way in the way that British Airways organized the flight -that reminded of days in the 70's, 80's, and 90's, when flying was a fun, and exciting adventure. I enjoyed and had confidence in the abilities of the flight crew, I'll be flying British Airways several more times this summer. Thank you so much for the great experience! Cheryl Olso

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

Overall, terrific service, accommodations, and experience. Only reason comfort was rated lower was because it was difficult to keep a comfortable sleeping position for the overnight flight, but I also had an economy seat.

Very cramped seats in economy, difficult to get comfortable with your legs and feet and back. The seat width is ok but I’m average size. Food is HORRIBLE. Crew is friendly. Delays and very tight connections made it tough for navigating. We would have missed our connecting flight if it wasn’t delayed too. The terminal transit was slow and normally every 10 minutes before 8pm, after 8 pm is every 30 minutes!!!!! No free wine or drinks!! Below average attitude.

Leg room was better than expected. Lavatory’s were easy to access.crew was grea!

Horrible seat allocation. Boarding was slow. Food was average and so was entertainment. The TV terminal didn't work and so had to use remote.

Lost one checked bag.and wasted 30min waiting and filing missing baggage report. Very unsatisfied.

This was an American Airlines flight. The crew were very unhappy and quite grumpy. Abrupt to the point of being rude. The food was dreadful. Indeed the breakfast was in edible. I will avoid AA at all costs in the future.

Fare was much lower with a layover in London as I was able avoid numerous landing fees that would have been added to the ticket price had I booked a direct flight to Amsterdam.

Book cheap flights from Seattle to London

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to London found on KAYAK in the last 72 hours.
10/6Sun
1 stopIcelandair
20h 30mSEA-LHR
$249
9/30Mon
1 stopIcelandair
17h 25mSEA-LHR
$250
9/25Wed
1 stopIcelandair
12h 05mSEA-LHR
$256
10/1Tue
1 stopIcelandair
17h 25mSEA-LHR
$269
9/5Thu
1 stopIcelandair
20h 30mSEA-LHR
$297
10/10Thu
1 stopIcelandair
20h 30mSEA-LHR
$300
4/29Mon
nonstopVirgin Atlantic
9h 20mSEA-LHR
$457
4/29Mon
1 stopDelta
22h 40mSEA-LHR
$477
4/29Mon
1 stopFinnair
21h 28mSEA-LHR
$487
4/29Mon
2 stopsAmerican Airlines
21h 51mSEA-LHR
$492

Search by stops

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Last minute flights from Seattle to Heathrow

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to London that are departing in the next 10 days.
4/28Sun
nonstopVirgin Atlantic
9h 20mSEA-LHR
5/14Tue
multi-stopVirgin Atlantic
13h 05mLHR-SEA
$625
4/28Sun
multi-stopAustrian Airlines
14h 39mSEA-LHR
5/14Tue
multi-stopAustrian Airlines
16h 03mLHR-SEA
$631
4/28Sun
nonstopDelta
9h 20mSEA-LHR
5/21Tue
multi-stopDelta
14h 10mLHR-SEA
$645
4/28Sun
nonstopDelta
9h 45mSEA-LHR
5/7Tue
multi-stopDelta
13h 05mLHR-SEA
$646
4/28Sun
multi-stopAmerican Airlines
17h 30mSEA-LHR
5/17Fri
nonstopAmerican Airlines
9h 45mLHR-SEA
$655
4/27Sat
multi-stopBritish Airways
15h 16mSEA-LHR
5/8Wed
nonstopBritish Airways
9h 45mLHR-SEA
$657
4/29Mon
multi-stopAmerican Airlines
14h 31mSEA-LHR
5/12Sun
nonstopAmerican Airlines
9h 45mLHR-SEA
$706
4/27Sat
multi-stopBritish Airways
15h 16mSEA-LHR
5/18Sat
nonstopBritish Airways
9h 45mLHR-SEA
$707
4/28Sun
multi-stopIberia
15h 03mSEA-LHR
5/5Sun
multi-stopIberia
17h 11mLHR-SEA
$718
4/27Sat
multi-stopIberia
15h 03mSEA-LHR
5/5Sun
multi-stopIberia
17h 11mLHR-SEA
$770

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Seattle - London Heathrow Airport Flights

Departure:

Seattle (SEA)United States

Destination:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

London Heathrow Airport - Seattle

Cabin classes:

$1,513
$2,350
$1,650
$602