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SEA - LON

Find cheap flights from Seattle to London from $246

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 London departing on 9/23. 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
Sat 5/18
Sat 5/25

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

 
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 44,471,296 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to London (SEA-LON)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to London 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
6:55 pm - 11:45 amSEA-LGW
32h 50m1 stop
12:00 pm - 5:00 pmLGW-SEA
13h 00m1 stop
$593Icelandair
Find Deal
Tue, Sep 24 - Tue, Nov 12
6:55 pm - 8:20 pmSEA-LHR
17h 25m1 stop
8:25 pm - 5:00 pmLHR-SEA
28h 35m1 stop
$595Icelandair
Find Deal
Tue, Sep 24 - Tue, Nov 12
3:45 pm - 5:15 pmSEA-LHR
17h 30m1 stop
4:50 pm - 7:20 pmLHR-SEA
10h 30mnonstop
$628Virgin Atlantic
Find Deal
Tue, Apr 30 - Wed, May 8
11:15 am - 10:00 amSEA-LGW
14h 45m1 stop
12:00 pm - 10:20 pmLGW-SEA
18h 20m1 stop
$632Virgin Atlantic
Find Deal
Sun, Oct 13 - Wed, Oct 23
7:30 pm - 1:15 pmSEA-LHR
9h 45mnonstop
9:55 am - 4:40 pmLHR-SEA
14h 45m1 stop
$634Delta
Find Deal
Tue, Apr 30 - Wed, May 8
1:30 pm - 6:50 amSEA-LHR
9h 20mnonstop
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
$639British Airways
Find Deal
Wed, May 1 - Wed, May 8
7:30 pm - 1:15 pmSEA-LHR
9h 45mnonstop
6:15 am - 11:20 amLHR-SEA
13h 05m1 stop
$647Delta
Find Deal
Sun, Apr 28 - Tue, May 7
1:30 pm - 6:50 amSEA-LHR
9h 20mnonstop
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
$690British Airways
Find Deal
Fri, May 3 - Tue, May 7
1:30 pm - 6:50 amSEA-LHR
9h 20mnonstop
12:15 pm - 9:26 pmLHR-SEA
17h 11m1 stop
$699Iberia
Find Deal
Wed, May 1 - Sun, May 5
9:56 am - 8:00 amSEA-LHR
14h 04m1 stop
9:45 am - 11:30 amLHR-SEA
9h 45mnonstop
$745Iberia
Find Deal
Tue, Sep 3 - Thu, Oct 3

Flights from Seattle to London - Travel Insights & Trends

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

What is the cheapest Seattle to London flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for one-way flights from Seattle to London.
Our data shows that the cheapest route for a one-way flight from Seattle to London cost $441 and was between Seattle and London Heathrow Airport. On average, the best prices are found if you fly this route. The average price for a return flight for this route is $566.

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

The average price of all flights from Seattle to London clicked on KAYAK for each day over the last 12 months.
For Seattle to London, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from London back to Seattle, the best deals are generally found on Tuesday, with Thursday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to London, 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 is January, where tickets cost $670 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,136 and $1,093 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to London, 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 58 days before departure.

Which airlines fly most frequently between Seattle and London?

The airlines most regularly connecting Seattle to London are British Airways (5 flights per day), Delta (2 flights per day), and Virgin Atlantic (one flight per day).

Which airlines fly non-stop between Seattle and London?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to London.
There are 3 airlines that fly nonstop from Seattle to London. They are: British Airways, Delta and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at $633 for a one-way flight. On average, the best prices for this route can be found at British Airways.

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

Each day, there are between 7 and 9 nonstop flights that take off from Seattle and land in London, with an average flight time of 9h 25m. The most common departure time is 7:00 pm and most flights take off in the evening, while the most flights land at London Heathrow Airport. Each week, there are 59 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

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

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 take?

The duration of a nonstop flight to London from Seattle is typically 9h 20m. The journey crosses a distance of 4,790 miles.

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

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

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

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

Good to know

Low season

January

High season

June

Cheapest flight

$246
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 32% increase in price.
Flight from Seattle to London Gatwick Airport

When to book flights from Seattle to London

Are your dates flexible? Find out the best times to travel from Seattle to London 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 flights from Seattle to London

  • Which is the best arrival airport if I want to visit Buckingham Palace?

    Both London Heathrow Airport (LHR) and Gatwick Airport (LGW) provide direct train and subway links to the Buckingham Palace. LHR sits around 1h away on the Piccadilly subway line, while LGW is approximately 45min away on the Southern train line or Gatwick Express.

  • Where can I store my extra luggage at London Heathrow Airport (LHR)?

    Every terminal at the London Heathrow Airport (LHR) features luggage storage lockers. Those using Terminal 1 should locate the lockers on the lower level on the International Arrivals foyer. Storage duration ranges from 3h to a maximum of 90 days.

  • Are there car rentals at Gatwick Airport (LGW)?

    Numerous car rental agencies provide services at the Gatwick Airport (LGW), with most of their pick-up garages situated at the North and South Terminals of LGW. It’s prudent to make early reservations if you want to get affordable rates.

  • Are there any accessibility services available for travelers at LHR upon their arrival?

    London Heathrow Airport (LHR) has essential amenities like flight vending machines, information screens, and seating in every host area. Those arriving via Terminal 3 will find the host areas post-security, near World Duty Free, after the toilets. Still, the arrival terminal has wheelchair-accessible restrooms, located inside the men's and women's toilets. Dedicated agents are there to guide you through the security clearance.

  • Are there onsite hotels at Heathrow Airport or Gatwick Airport?

    Heathrow Airport features a number of hotels connected directly to its terminals, so visitors have a selection of airports to choose from. In Terminal 4 travelers will find the Hilton London Heathrow Airport and the capsule hotel YOTEL, while in Terminal 5 there is the Sofitel London Heathrow. Gatwick airport also has a variety of hotel options available, such as Hampton by Hilton, YOTELAIR, and Bloc Hotel.

  • Can I fly from Seattle to London non-stop?

    British Airways, Iberia, Virgin Atlantic, Finnair, and Delta Air Lines all offer direct nonstop flights from Seattle to London via Heathrow Airport. Many other airlines also offer one-stop flights to London from Seattle with final destinations varying largely between Heathrow Airport, Gatwick Airport, and London City Airport.

  • What is the quickest way from Heathrow Airport to downtown London?

    The Heathrow Express is the fastest way to get to central London from Heathrow Airport and is conveniently connected to Terminals 2, 3, and 5. There is also a direct London Underground connection via the Piccadilly Line, for those who prefer the cheaper (but slower) method of travel.

  • Should I fly to Heathrow Airport or Gatwick Airport?

    Both airports are conveniently connected via public transport to central London with travel times roughly equal. However, if your final destination is on the south or east side of London, then Gatwick is likely the better option due to its close proximity, while Heathrow is more convenient for destinations on the west and north side.

  • What is the cheapest flight from Seattle to London?

    In the last 3 days, the lowest price for a flight from Seattle to London was $246 for a one-way ticket and $593 for a round-trip.

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

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

  • Which airports will I be using when flying from Seattle to London?

    On your way to London, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing in one of London’s 6 airports: London City, London Gatwick, London Heathrow, London Luton, London Southend, or London Stansted.

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

    All the following airlines offer inflight Wi-Fi service on the Seattle to London 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?

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

  • Which airline alliances offer flights from Seattle to London?

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

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

    There are nonstop flights from Seattle to London 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 $955 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 $990 and an overall rating of 7.7.

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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?

    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 with an airline and back to Seattle with another airline.

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

    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 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 Seattle to London

  • Looking for a cheap flight? 25% of our users found flights on this route for $520 or less one-way and $735 or less round-trip.
  • Fly aboard British Airways from Seattle to London and experience its hub at the London Heathrow Airport (LHR). After arrival, you can get access to BA Lounge located in The Concorde Room, Terminal 5. Access to this lounge is restricted to members of the airline's Executive Club or the Oneworld Alliance. If you fly this airline, you’ll enjoy priority clearance at the terminal and security checkpoint as part of the fast lane program.
  • There are two lounges at Seattle-Tacoma International Airport (SEA) situated at Concourse A and South Satellite. Typically, the lounges open 3h before the scheduled flight departs. Children can only access the lounges if accompanied by adults, while infants under 2 years are admitted for free. Still, If you’re flying Economy Class, you can access the lounges at a reduced cost.
  • Travelers with kids through Seattle-Tacoma International Airport (SEA) have their needs catered to. The airport features suites where moms can enjoy privacy while pumping or breastfeeding. You can locate these rooms in Concourse N on the Mezzanine level, or Concourse D on the lower level of D Annex. Other amenities include sinks, chairs and power sockets.
  • Those with early morning departures through Seattle-Tacoma International Airport (SEA) should consider booking a room at one of the many hotels adjacent to the airport. Usually, most of these properties provide complimentary shuttles to and from the airport. Holiday Inn Express Hotel & Suites Seatac, An Ihg Hotel is one such hotel.
  • American Airlines allows you to bring pets such as cats and dogs when flying from Seattle to London. Depending on their sizes, they can travel as a carry-on or be transported through American Airlines Cargo. However, they must bear valid health and vaccination certificates, and you must lock them in their kennels.
  • Link Light Rail and bus services connect Seattle-Tacoma International Airport to downtown Seattle quickly and efficiently. The Link is just outside the airport on the fourth floor of the adjacent parking garage and runs all the way from the airport to the University of Washington.
  • Families flying with children may want to consider visiting Seattle-Tacoma International Airport’s Playroom. It is the perfect spot to help kids burn off excess energy before their flight. The Playroom is located across from the Seattle Tap Room in the Central Terminal near the A gates.
  • There are many airports in London and travelers should keep their locations in mind when choosing which airport to fly into. London City Airport and Heathrow Airport are the most central of the airports and offer quick, easy access to the heart of London, while Gatwick Airport and London Stansted Airport are on the southside and northside of London, respectively.
  • Looking for a family-friendly activity to help pass the time prior to your flight? Why not check out a live music performance? All throughout the week, live music gigs are performed in Sea-Tac Airport’s various terminals to the enjoyment of passengers.
  • Travelers with flights from Seattle to London via Delta Air Lines may want to consider taking the chance to relax in comfort in one of Delta’s premium lounges. Delta operates two Delta Sky Clubs at Seattle-Tacoma International Airport, with one in Concourse A and the other in the airport’s Rooftop Area. There are also showers available at the Rooftop location.
See more tips

Prefer to fly non-stop from Seattle to London?

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

Nonstop departures

Seattle/Tacoma Intl to London

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 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 London

 
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 London? 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 11104 reviews
7.9comfort
8.6crew
8.2boarding
8.0entertainment
7.5food
Airline reviews

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

8.0 ExcellentEddie, Apr 2024SEA - PHX
Read more about Delta reviews

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

Boarding in Seattle is always a mess. Sat in Deltas new domestic first class cabin. Everything was great except I found the seat cushion to be fairly uncomfortable. I’m a bigger guy so take that into mind (6’2” / 300 lbs.). Crew was meh.

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.

Unfortunately delayed 2 hrs due to faulty tyre.. which had to be changed, but better safe than sorry.

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

Hi vergin Atlantic service was good but the flight ticket agent travel up charge me extra 57 pounds as a airport charges, actually I refuse to pay but they say if I not pay £57 then they say you will not be able to travel from Heathrow to goa ,so for me there was no option and it was just 3 day before my departure so i paid, so please look in to the matter. And I have a receipt of £ 57 as well .thanks

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.

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

From the start everything was perfectly fine. First meeting was fantastic. Breakfast needs a lot of work and food was overcooked and not very nice for breakfast.

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"

Iberia personnel on the ground is so rude. I would think twice in the future before booking another Iberia flight

I’m hoping for WiFi included. Everything else was very good

All corners have been cut and it’s a cheap experience that no longer is distinguished from most other cheap airlines

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

I called prior to flying to confirm our baggage allowance which was 5 bags. On our outbound flight thee were no problems. On the return flight we were charged for each bag totaling $400! We are working with customer service to resolve the issue.

Why no entertainment? Also water should be free, it is basic human right.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

Everything was great, except the food, which could have been flavorful.

Took too long to tak off but besides that it was good

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.

As expected for a BA long haul flight in economy - you get what you pay for. Good leg space, in flight entertainment and food and drink provided. Staff on the return flight (overnight) we're a bit brisk and just wanted to get everyone fed and watered before turning the lights down. We're vegetarian so ordered it separately through the booking, although when we were in flight we realised there was a normal and vegetarian option anyway, and we were given vegan. This is fine, however on the return trip we were told there were no more specially ordered meals left, so be aware in case you have specific dietary requirements.

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.

We have business class seats from Los Angeles to London. The crew is friendly and provided great service. The flight was very comfortable and very smooth. Will use this airlines again in the future.

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.
9/23Mon
1 stopIcelandair
11h 55mSEA-LGW
$246
9/23Mon
1 stopIcelandair
17h 25mSEA-LHR
$246
9/30Mon
1 stopIcelandair
12h 05mSEA-LHR
$247
5/1Wed
nonstopIberia
9h 20mSEA-LHR
$445
5/1Wed
nonstopBritish Airways
9h 20mSEA-LHR
$447
9/23Mon
nonstopVirgin Atlantic
9h 20mSEA-LHR
$461
4/23Tue
nonstopVirgin Atlantic
9h 20mSEA-LHR
$467
9/25Wed
nonstopDelta
9h 20mSEA-LHR
$473
4/30Tue
1 stopDelta
14h 17mSEA-LGW
$477
9/30Mon
1 stopBritish Airways
14h 45mSEA-LCY
$504

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Last minute flights from Seattle to London

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.
4/21Sun
multi-stopVirgin Atlantic
17h 50mSEA-LHR
5/7Tue
nonstopVirgin Atlantic
10h 30mLHR-SEA
$628
4/21Sun
multi-stopVirgin Atlantic
18h 40mSEA-LGW
5/7Tue
multi-stopVirgin Atlantic
18h 18mLGW-SEA
$632
4/23Tue
nonstopDelta
9h 45mSEA-LHR
5/2Thu
multi-stopDelta
16h 40mLHR-SEA
$646
4/23Tue
multi-stopDelta
22h 40mSEA-LHR
5/1Wed
multi-stopDelta
19h 25mLHR-SEA
$651
4/20Sat
multi-stopBritish Airways
15h 16mSEA-LHR
4/30Tue
multi-stopBritish Airways
16h 18mLHR-SEA
$668
4/19Fri
multi-stopIberia
14h 40mSEA-LHR
5/1Wed
nonstopIberia
9h 45mLHR-SEA
$833
4/19Fri
multi-stopIberia
14h 40mSEA-LHR
4/26Fri
multi-stopIberia
17h 11mLHR-SEA
$843
4/21Sun
multi-stopBritish Airways
13h 10mSEA-LHR
4/27Sat
multi-stopBritish Airways
28h 51mLHR-SEA
$937
4/20Sat
multi-stopIcelandair
11h 55mSEA-LGW
5/8Wed
multi-stopIcelandair
12h 40mLGW-SEA
$1,081
4/21Sun
multi-stopIcelandair
12h 05mSEA-LHR
4/27Sat
multi-stopIcelandair
28h 15mLHR-SEA
$1,107

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Seattle - London Flights

Departure:

Seattle (SEA)United States

Return flight deals:

London - Seattle

Cabin classes:

$4,496
$2,719
$1,638
$566