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Find cheap flights from London Heathrow Airport to Washington from $354

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 Washington departing on 6/7. 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
sab 5/25
sab 6/1

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Best Washington Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattle1 stop$602
Spokane
Spokane2 stops$762
Portland
Portland1 stop$672

Good to know

Low season

February

High season

August

Cheapest flight

$354
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 29% increase in price.
Flight from London Heathrow Airport to Seattle

FAQs - booking Washington flights

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

    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 Washington.

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

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

    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 Washington with an airline and back to London Heathrow Airport with another airline.

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

    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 Washington 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 cheap flights to Washington

  • Morning departure is around 32% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Heathrow to Washington

 
Need help choosing which airline to fly with from Heathrow to Washington? 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.
8.2
Singapore AirlinesOverall score based on 1481 reviews
8.7crew
8.4boarding
7.8food
8.2entertainment
8.1comfort
Airline reviews

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

10.0 ExcellentAnonymous, Mar 2024SIN - SFO
Read more about Singapore Airlines reviews

When boarding, after business class should be premium economy, but economy class already lined-up at the gate blocking premium economy to board. Singapore airline crew should done a better job to organize this chaos :( Thank you.

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

Perfect experience from boarding through to leaving the flight, comfortable and personalised service from all staff, highly recommended

They were able to assist my elderly father and myself after not being able to check in to scoot. The counter service was phenomenal. They did what they could to get us on the next plane so we could catch our Connecting flight. Scoot closed early on us so we ended up missing our flight.

They are great with every aspect of customer service. Helped my elderly father and aided him with using the restroom.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

The overall operation needs to be improved. The in-flight services took forever and sometimes ran out of options.

We started with a 2 hour delay due to some airplane technical issues, and while we got a little snack pack, it was a pretty long delay for SQ. The flight itself was short, there's no entertainment on the B737-800 and there's a small snack. Functional.

The male traveller seated in the row in front diagonally opposite my husbands seat across the aisle as soon as the seatbelt sign went off moved across the aisle into the seat in front of my husband for the entire journey from London to Singapore he had his seat reclined and pushed back and the seat touching my husbands knees for the entire journey from London to Singapore. very uncomfortable for my husband.

Crew is phenomenal. Helpful with anything you may need. Lots of entertainment options. Food was good. On time, no complaints.

Very comfortable Prem economy seats for a long haul flight. Had a problem with the tv that the crew fixed so was great!

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Not good. Flight was purchased for my father who needed medical assistance to board and transfer due to a heart condition. No one at Hong Kong from Cathay was there to assist and he barely made the connection. When I talked to him he could barely breath and was not sure he was going to make it. Really poor service even though the ticket stated he needed a wheelchair assistance.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

Very comfortable flights. Not so many new releases in terms of films.

I felt thirsty and asked the flight attendent for water, but no one came for more than half an hour.

Everything went smooth. All flights were on time No changing gates, . No changing flights . It was like a completely different airlines tha n the last time I used Cathay Pacific . The last flight, 2 months ago, I had before this one was from Philippines also . I got changed in Manila and was told it only added 2 hours onto my flight . My 20 hour return trip ended up being 30 hours return with a 10.0 hour layover in New York with no seats anywhere . Everyone was sleeping or sitting on the floor . Unlike the hotel I was given in Manila to wait for this flight home . I never thought I would use Cathay Pacific again . But I did and this time you were great! I should have complained about the flight and layover from Hell a couple months ago. Consider that I am complaining about that august/23 flight now . Thank you got the great flying experience on my way home from philippines .

Everything was good food could be better but ok for economy on my 2nd flight the head ph jack are bad you have to hold pushed in to hear anything but other then that very nice service

We requested special assistance and Cathay Pacific provided it in Sydney, but we were completely forgotten about in Hong Kong - when we really needed the help to catch our connecting flight. Really disappointing service.

Would have liked working outlets on the flight. The first meal was very bleh, the second meal was a lot better so overall okay meals

Wuhan - Dubai. Old plane: 1. Only USB charger. No power outlet to plug in.. 2. Super narrow seat layout 3. Toilet cover consistently fell down and hit my back when sitting on it.. :( 4. Entertainment system touch screen not sensitive, and need to press hard or use finger tips to hit. Crew were very nice and accommodating though.

1. I got very poor check in experience with the counter lady . This is the first airline I ever experienced that no combine check in weight allow . Even we have 4 of us but weight counter by piece . So we wasted lot of time argue and repack . This is super crazy 2. Next I left my Samsung tablet on the plane . And I started to escalate and finally spoke to southern airline lost and found in Malaysia and the amazing answer she give is : system nothing found and please try to call southern airline in china 🧐 . I have been flying many other airlines but this is my first encounterment with such irresponsible airline response and no empathy given to customer . My feeling is nobody bother whether how customer like me feel and I’m just too small for the management to take note .

No red vine, no whiskey, no vodka. No that I wanted all of them at once but still...

During flight, some passengers perform stomping leg exercises which disturb the comfort (I.e. sleep) of other passengers.

No good but was short flight. Both of our China Southern flights were on time. No surprises.

The flight was okay it was the kayak customer service that was poor, I have been trying to change my name on my flight ticket 3 days before my flight and nothing got done about it even tho I messaged so many times and phoned, all I got in return was that is was being processed and still to this day nothing has been done about it, I think it’s disgusting and un needed stress to the trip.

Traveling with the Chinese airlines , their service superior to the US Airlines , they are much more friendly and the seats are comfortable , In the past I flew with United , now ,United Airline will become history for me .

Pros: "Yes, seats were very comfortable and crew members were extremely helpful"
Cons: "Everything was excellent."
Pros: "see SH to GZ prior flight. The same."
Cons: "Same problems. Get KFC or McDonalds to cater. No one enjoys the airline's food which I suspect is prepared on a very small budget. Even a sandwich with a pre-packaged drink would elevate the foodservice."
Pros: "No..no redeeming features.."
Cons: "Coffee was the worst I've ever had. The 2+1 powdered mil and coffee stick. Truly awful. But i suppose there aren't many people on the flight who would order coffee..I would even pay extra for a coffee if they had a quality option. Food is comparable to a school canteen. I would probably pay 20rmb for this in Shanghai. Frozen butter for the half-frozen bread. They really couldn't do worse..."

On the flight back the seats where very uncomfortable, they where so bad that my back started to hurt after the first 2 hours. I can sit in a wooden chair for 2 hours. But these where just horrible, it just shows how cheap the airline has become. And the cabin was heated all those people in a heated cabin during a night flight. It was clear the climate control was not working. To top that off you are not even offered a glass of water, these people are animals.

We purchased a Go First Pass for 10 Euros each so we could board first, but everyone was able to board at the same time so we wasted 20 Euros. The flight left ab out 15 minutes late and was not allowed to land at Healthrow so we had to circle Heathrow for about 45 minutes. This caused us to almost miss our flight from Heathrow to Atlanta.

Severely delayed with no notice. Could have arrived at the airport hours later had we been informed of the delay

Once the boarding sign went on and all passengers gathered in line, we were left waiting standing up for almost an hour because there was a delay.

It would be nice to have vegan options for meals. The entertainment was not working on the the way to Austria. It was only available near the end of flight to Canada. The service was excellent.

Flight was delayed by approx 1 hour. The boarding process and the flight itself were very good, slightly tight squeeze for my legs but overall happy.

The business class layout on this plane is tightly packed and atrocious with no sense of privacy.

Flight was meant to leave at 8:30pm but there was a 2 hour delay 😞

Airmalta does not include meals in their flights and neither offers entertainment.

Pros: "The crew was amazing and took measures to make the flight Covid safe"
Cons: "The food was not the best and Twistees weren't available. Also the seats felt narrow"

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.

I sat in the last row of seats. On an 8 hour flight they allowed folks to stand and talk and drink in the back area near the toilets the whole time. They were at times loud and in the way. It was a little annoying. The crew on this trip were pretty mediocre and the plane was littered with trash when we disembarked.

Book cheap flights from London to Washington

Recent round-trip flight deals

5/14mar
1 stopIcelandair
28h 15mLHR-SEA
5/21mar
1 stopIcelandair
17h 25mSEA-LHR
$602
5/14mar
1 stopIcelandair
31h 10mLHR-SEA
6/11mar
1 stopIcelandair
28h 55mSEA-LHR
$606
5/15mer
nonstopAmerican Airlines
9h 45mLHR-SEA
5/21mar
1 stopAmerican Airlines
21h 10mSEA-LHR
$634
5/15mer
2 stopsAmerican Airlines
16h 25mLHR-SEA
12/11mer
1 stopAmerican Airlines
17h 27mSEA-LHR
$636
9/17mar
1 stopLufthansa
13h 45mLHR-SEA
9/27ven
1 stopLufthansa
14h 15mSEA-LHR
$653
5/6lun
nonstopBritish Airways
9h 45mLHR-SEA
5/11sab
1 stopBritish Airways
14h 11mSEA-LHR
$660
9/21sab
1 stopLufthansa
27h 31mLHR-SEA
10/5sab
1 stopLufthansa
15h 20mSEA-LHR
$676
5/8mer
nonstopBritish Airways
9h 45mLHR-SEA
5/15mer
nonstopBritish Airways
9h 20mSEA-LHR
$708
5/14mar
2 stopsSWISS
24h 27mLHR-SEA
6/11mar
2 stopsSWISS
20h 45mSEA-LHR
$753
5/16gio
2 stopsSWISS
21h 47mLHR-SEA
6/11mar
2 stopsSWISS
19h 10mSEA-LHR
$791

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Recent one-way flight deals

6/7ven
3 stops
38h 16mLHR-SEA
$354
5/23gio
3 stops
57h 54mLHR-GEG
$374
6/14ven
3 stops
38h 56mLHR-SEA
$374
5/6lun
nonstopBritish Airways
9h 45mLHR-SEA
$702
5/13lun
nonstopFinnair
9h 45mLHR-SEA
$706
5/20lun
1 stopAir France
25h 45mLHR-SEA
$734
7/5ven
1 stopFinnair
29h 50mLHR-SEA
$736
10/15mar
nonstopBritish Airways
9h 45mLHR-SEA
$754
6/3lun
1 stopJetBlue
18h 54mLHR-SEA
$781
5/20lun
1 stopAir France
25h 45mLHR-SEA
$795

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Last minute flights from Heathrow to Washington

Last minute flight, train and bus deals

4/29lun
multi-stopFinnair
15h 01mLHR-SEA
5/6lun
multi-stopFinnair
12h 58mSEA-LHR
$757
4/28dom
multi-stopFinnair
17h 14mLHR-SEA
5/4sab
multi-stopFinnair
27h 34mSEA-LHR
$832
4/30mar
multi-stop
18h 57mLHR-SEA
5/7mar
multi-stop
18h 20mSEA-LHR
$834
4/30mar
nonstopAmerican Airlines
9h 45mLHR-SEA
5/7mar
nonstopAmerican Airlines
9h 20mSEA-LHR
$874
4/30mar
nonstopAmerican Airlines
9h 45mLHR-SEA
5/7mar
multi-stopAmerican Airlines
17h 30mSEA-LHR
$877
4/29lun
multi-stopLufthansa
16h 57mLHR-SEA
5/6lun
multi-stopLufthansa
14h 40mSEA-LHR
$973
4/29lun
multi-stopLufthansa
16h 57mLHR-SEA
5/5dom
multi-stopLufthansa
14h 10mSEA-LHR
$1,010
4/29lun
multi-stopSWISS
20h 54mLHR-SEA
5/5dom
multi-stopSWISS
39h 50mSEA-LHR
$1,046
4/28dom
multi-stopBritish Airways
15h 01mLHR-SEA
5/4sab
nonstopBritish Airways
9h 20mSEA-LHR
$2,248
4/30mar
nonstopBritish Airways
9h 45mLHR-SEA
5/4sab
multi-stopBritish Airways
11h 30mSEA-LHR
$10,979

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London Heathrow Airport - Washington Flights

Departure:

London Heathrow Airport (LHR)United Kingdom

Return flight deals:

Washington - London Heathrow Airport

Cabin classes:

$5,294
$3,890
$1,471
$680