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LHR - SEA

$338 Find cheap flights from London Heathrow Airport to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to Seattle departing on 5/19. 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
Tue 6/4
Tue 6/11

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Seattle.
In the last 7 days travelers have searched 43,369,418 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Seattle 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
12:45 pm - 2:40 pmLHR-SEA
9h 55mnonstop
3:20 pm - 7:45 amSEA-LHR
9h 25mnonstop
Thu, Oct 24 - Tue, Oct 29
12:45 pm - 2:40 pmLHR-SEA
9h 55mnonstop
7:20 am - 7:05 amSEA-LHR
16h 45m1 stop
Thu, Oct 24 - Tue, Oct 29
12:45 pm - 2:40 pmLHR-SEA
9h 55mnonstop
9:53 am - 6:45 amSEA-LHR
12h 52m1 stop
$583Virgin Atlantic
Find Deal
Mon, Sep 16 - Mon, Sep 23
12:45 pm - 2:40 pmLHR-SEA
9h 55mnonstop
4:30 pm - 9:50 amSEA-LHR
9h 20mnonstop
$585Virgin Atlantic
Find Deal
Mon, Sep 16 - Mon, Sep 23
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
1:30 pm - 6:50 amSEA-LHR
9h 20mnonstop
$624British Airways
Find Deal
Tue, May 14 - Mon, May 20
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
11:50 pm - 10:10 pmSEA-LHR
14h 20m1 stop
$634American Airlines
Find Deal
Mon, Sep 9 - Sun, Sep 22
9:45 am - 8:43 pmLHR-SEA
18h 58m2 stops
11:59 pm - 6:20 amSEA-LHR
22h 21m2 stops
$654American Airlines
Find Deal
Mon, Sep 9 - Sun, Sep 22
4:50 pm - 7:20 pmLHR-SEA
10h 30mnonstop
10:55 pm - 8:10 pmSEA-LHR
13h 15m1 stop
$686Delta
Find Deal
Sun, Sep 15 - Sun, Sep 29
9:50 am - 11:35 amLHR-SEA
9h 45mnonstop
7:40 pm - 1:00 pmSEA-LHR
9h 20mnonstop
$699British Airways
Find Deal
Sat, May 18 - Tue, May 21
9:55 am - 4:35 pmLHR-SEA
14h 40m1 stop
11:15 am - 10:15 amSEA-LHR
15h 00m1 stop
$705Delta
Find Deal
Mon, Aug 26 - Thu, Sep 5

Flights from Heathrow to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Heathrow to Seattle 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 London Heathrow Airport to Seattle?

The average price of all flights from London Heathrow Airport to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from London Heathrow Airport to Seattle, you should consider leaving on a Wednesday and avoid Saturdays if you are looking for the best rates. For your return to London Heathrow Airport, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London Heathrow Airport to Seattle, 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 London Heathrow Airport to Seattle is November, where tickets cost $567 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $907 and $856 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from London Heathrow Airport to Seattle, 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 London Heathrow Airport to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 43 days before departure.

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

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 WestJet ($396) and Icelandair ($459). The cheapest round-trip tickets were found on Virgin Atlantic ($583) and Lufthansa ($595).

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

British Airways connects London Heathrow Airport to Seattle with up to 2 flights per day. Delta also offers 2 flights per day, while Virgin Atlantic follows with 1 flight per day.

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

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from London Heathrow Airport to Seattle.
There are 3 airlines that fly nonstop from London Heathrow Airport to Seattle. They are: British Airways, Delta and Virgin Atlantic. The cheapest price of all airlines flying this route was found with British Airways at $532 for a one-way flight. On average, the best prices for this route can be found at Delta.

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

Each day, there are between 5 and 7 nonstop flights that take off from London Heathrow Airport and land in Seattle, with an average flight time of 10h 02m. The most common departure time is 4:00 pm and most flights take off in the afternoon. Each week, there are 41 flights. The most frequent day of departure is Thursday, when 17% of all weekly flights depart. The fewest flights depart on a Tuesday.

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

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 3 cabin class options for the route. These are 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 London Heathrow Airport to Seattle take?

The average nonstop flight takes 9h 45m, covering a distance of 4,783 miles.

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

Early birds can take the earliest flight from London Heathrow Airport at 9:45 am and will be landing in Seattle at 11:30 am.

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

If you prefer to fly at night, the latest flight from London Heathrow Airport to Seattle jets off at 4:50 pm and lands at 7:10 pm.

Good to know

Low season

January

High season

August

Cheapest flight

$338
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from London Heathrow Airport to Seattle

When to book flights from Heathrow to Seattle

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

  • Are there hotels near Seattle Airport?

    Several hotels are located near Seattle Airport. The Wingate by Wyndham hotel has a free airport shuttle, fitness centre and free Wi-Fi. The Aloft Seattle Sea-Tac hotel is just down the street from the airport, offers laundry and dry cleaning services and is pet friendly. Another pet-friendly hotel is the Residence Inn which also offers free breakfast and an airport shuttle. The Residence Inn and the Element Hotel are two options that include kitchenettes and microwaves in their rooms.

  • How can I get to Heathrow Airport from central London?

    There is an express train that runs from London Paddington Station to Heathrow Airport around every 15min. The trip takes roughly 15min and tickets cost about £25.00. Children under 15 can travel for free as long as they are travelling with a fare-paying adult or have proof of their flight booking.

  • What's the best way to reach downtown Seattle from the airport?

    The 1 Line Light Rail service runs from the airport to downtown Seattle. The trip takes around 41min. The line also stops at the University of Washington. You can reach the Light Rail Station by heading across the 'Skybridge' from baggage claim. B uses from Seattle Airport depart from near the Light Rail Station. The Rapid Ride A-Line and Route 156 buses both travel to downtown Seattle. Your hotel may also offer a courtesy shuttle from the airport. These shuttles will stop at the courtesy island shuttle lane on the third floor of the car park.

  • Are there hotels at Heathrow Airport?

    There are three hotels connected to Heathrow Airport. The Sofitel Hotel is connected to Terminal 5 and offers a complimentary breakfast. If you're departing from Terminal 4, you might prefer to stay at The Hilton which has a fitness centre and restaurant on-site. The Aerotel hotel is connected to Terminal 3 and is within walking distance of Terminal 2. Aerotel offers hourly booking with a minimum stay of one hour.

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

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to Seattle was $338 for a one-way ticket and $542 for a round-trip.

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

    Yes

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

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

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

    KLM, Delta, Air France, and Virgin Atlantic offer inflight Wi-Fi service on the London Heathrow Airport to Seattle flight route.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from London to Seattle are Delta and Virgin Atlantic. With an average price for the route of $764 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 $775 and an overall rating of 7.7.

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

    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 London Heathrow Airport to Seattle.

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

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

    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 Seattle with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and SEA 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 London Heathrow Airport to Seattle?

    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 Seattle from London Heathrow Airport 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 LHR to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $773 or less one-way and $755 or less round-trip.
  • Travelling with children at London Heathrow Airport (LHR)? Kids aged nine and under can visit Stay & Play areas available in each terminal. Open between 6:00 and 21:00, these are soft play areas that also offer colouring-in and activity sheets.
  • Seattle Tacoma Airport (SEA) has the FlySEA app which provides information and live updates on ground transport including public transport, taxis and courtesy shuttles. It also provides up-to-date information on flights, so anyone picking you up from the airport can check to see if your flight is delayed.
  • Heathrow Airport has partnered with the 'Grab' app to let you pre-order food and drink from your phone and collect it from one of the dedicated checkpoints in the terminal.
  • Heathrow Airport has multi-faith prayer rooms in each terminal, after security. You can also visit St. George's Chapel, located just outside the airport.
  • If you've organised for someone to pick you up from Seattle Airport, they can park in the Cell Phone Car Park for free for up to 20min. Let them know when you're ready to leave and they will be able to pick you up from outside Baggage Claim.
See more tips

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

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 5 airlines serving from Heathrow to Seattle

 
See real verified KAYAK customer reviews for airlines flying from London to Seattle. 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 Heathrow to Seattle? 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 10838 reviews
7.9Comfort
8.6Crew
7.4Food
8.2Boarding
8.0Entertainment
Airline reviews

Delta is one of the best airlines I have flown

10.0 ExcellentKellie, Apr 2024ANC - SEA
Read more about Delta reviews

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

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

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

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.

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

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

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Somehow I got “offloaded” even though I had my boarding pass and was in transit Food is horrible Staff were nice and cheerful No headphones were provided on 11 hours flight

The staff were very helpful with lots of refreshments on offer. The toilets were clean. The seats were comfortable and entertainment was good. No complaints, it was excellent.

The main flight was OK but the second flight was chaotic with delays

amazing! they were so kind and allowed us to sit on empty seats so we could stretch our legs and sleep good. Food is amazing as well plus dessert in the middle of the flight!

I had trouble finding a boarding pass because I had an hour between Flights and American did not see my flight I believe because I was ticketed through KAYAK. I did not have enough time to go to the desk before boarding so I went to the desk and told them while I was boarding and they had a boarding pass for me within three minutes. Nice. I paid extra to have more legroom and it is definitely worth it for a six hour flight. I would’ve paid for a decent dinner, but they didn’t offer anything but a snack box —not good for six hours.

Overall it was good but not great. The aircraft was an old and seats didn’t recline in business class unless you kept playing around with it.

No nice at all, delayed and I lost the connection over xmas

Terrible flight seats where really uncomfortable I had body aches for 2 days and flight was delays almost two hours

Food was terrible. Flight attendants OK. Only saw them at food service. Other than that they paid no attention to the passengers at all.

Flight was an Iberia Flight on Level but seemed to be outsourced to a 3rd airline - Wamos. Seating pattern was different than when booked, we waited on the JETBRIDGE for 45 minutes to board, food was terrible. Movie options were limited to about 20 and very old, TV shows was limited to about 15 and equally as old. Staff was fine but definitely the "b-team". Landed about 60 minutes early and waited on the runway for 45 minutes - despite that Logan Airport in Boston recently added new gates. Mediocre experience at best.

Improve food options. Do not charge so much for checked bags. As some who paid 990 EUR fir the round trip international flight it is horrendous to pay another 140 for 1 checked bag.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

My luggage never arrived in Miami; still waiting a day later.

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

Service and food are good. However, main cabin with the extra cost one pays could be better. I don't see any difference with the rest of the seats in the regular category. The seats are too close to the ones in front. For short flights it is Ok, but for long ones there should be more space.

As with every airline the seats are not built for tall people.

Fast check in, easy to navigate, crew were very good, the plane was delayed due to a previous flight and I found the cleanliness a little lacking but overall it was fine

I would not fly with BA again. Packed in like sardines, constant request to turn down air conditioning due to freezing cold for hours and the food was pretty to look at but tasteless!

My wife and I paid for seat selection to be together. My wife and I were on separate rows and the excuse they gave was they changed the plane. Also, I have celiac and asked for a gluten free meal in the ticket profile which they did not have.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The crew was very attentive and kept busy serving a variety of treats!

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Not enough trash pickups throughout the flight. Everything else was great.

Overall good, the gluten free food is very hit/miss though and you must tell them you have an allergy days in advance.

All was good. The headphones they supply are of poor quality. The food is good but too much dairy.

Seating space was crowded and I am a very small woman.

Book cheap flights from London to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to Seattle found on KAYAK in the last 72 hours.
5/19Sun
2 stops
22h 10mLHR-SEA
$338
5/21Tue
3 stops
43h 55mLHR-SEA
$349
6/4Tue
2 stops
35h 24mLHR-SEA
$355
6/4Tue
1 stopIcelandair
21h 55mLHR-SEA
$459
6/16Sun
1 stopIcelandair
30h 15mLHR-SEA
$470
9/25Wed
nonstopBritish Airways
9h 45mLHR-SEA
$668
9/16Mon
nonstopIberia
9h 45mLHR-SEA
$669
9/19Thu
nonstopIberia
9h 45mLHR-SEA
$707
7/2Tue
2 stopsBritish Airways
16h 50mLHR-SEA
$766
5/13Mon
nonstopVirgin Atlantic
10h 30mLHR-SEA
$784

Search by stops

Search by airline

Search by price

Last minute flights from Heathrow to Seattle

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 London to Seattle that are departing in the next 10 days.
5/7Tue
multi-stopFinnair
37h 56mLHR-SEA
5/20Mon
multi-stopFinnair
16h 23mSEA-LHR
$657
5/8Wed
multi-stopIcelandair
31h 10mLHR-SEA
5/15Wed
multi-stopIcelandair
12h 05mSEA-LHR
$691
5/8Wed
multi-stopIcelandair
31h 10mLHR-SEA
5/15Wed
multi-stopIcelandair
20h 30mSEA-LHR
$696
5/7Tue
multi-stopIcelandair
28h 15mLHR-SEA
5/15Wed
multi-stopIcelandair
12h 05mSEA-LHR
$787
5/7Tue
multi-stopDelta
18h 10mLHR-SEA
5/19Sun
multi-stopDelta
22h 35mSEA-LHR
$1,007
5/7Tue
nonstopAmerican Airlines
9h 45mLHR-SEA
5/20Mon
multi-stopAmerican Airlines
23h 47mSEA-LHR
$1,023
5/7Tue
nonstopAmerican Airlines
9h 45mLHR-SEA
5/15Wed
multi-stopAmerican Airlines
23h 47mSEA-LHR
$1,025
5/9Thu
multi-stopUnited Airlines
17h 27mLHR-SEA
5/26Sun
multi-stopUnited Airlines
27h 45mSEA-LHR
$2,105
5/7Tue
multi-stopDelta
14h 45mLHR-SEA
5/8Wed
multi-stopDelta
22h 35mSEA-LHR
$2,716
5/9Thu
nonstopVirgin Atlantic
10h 30mLHR-SEA
5/26Sun
multi-stopVirgin Atlantic
13h 40mSEA-LHR
$2,728

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London Heathrow Airport - Seattle Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - London Heathrow Airport

Cabin classes:

$5,294
$3,890
$1,575
$691