$430 Find Cheap Flights from London Heathrow Airport to Washington

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 5/2. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Washington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Washington, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Heathrow to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle2 stops$618
Spokane
Spokane1 stop$786
Seattle
Seattle2 stops$618
Spokane
Spokane1 stop$786

Book Cheap Heathrow to Washington Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Heathrow to Washington 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Heathrow to Washington

Tue, Apr 21 - Sun, Apr 26
Multiple Airlines Logo
6:40 am - 8:40 pm
LHR
-
SEA
22h 00m
2 stops
Multiple Airlines Logo
7:00 pm - 7:55 pm
SEA
-
LHR
16h 55m
2 stops
$618Multiple Airlines
Mon, Apr 27 - Mon, May 18
Icelandair Logo
9:25 pm - 5:55 pm
LHR
-
SEA
28h 30m
1 stop
Icelandair Logo
7:00 pm - 11:55 am
SEA
-
LHR
32h 55m
1 stop
$624Icelandair
Wed, Apr 29 - Thu, May 7
Icelandair Logo
9:25 pm - 8:40 pm
LHR
-
SEA
31h 15m
1 stop
Icelandair Logo
7:00 pm - 8:20 pm
SEA
-
LHR
17h 20m
1 stop
$626Icelandair
Sat, Jul 4 - Mon, Jul 6
Air Canada Logo
3:05 pm - 12:14 pm
LHR
-
PDX
29h 09m
2 stops
Air Canada Logo
10:10 am - 11:50 am
PDX
-
LHR
41h 40m
2 stops
$736Air Canada
Tue, Mar 31 - Mon, Apr 20
Delta Logo
5:45 pm - 10:50 pm
LHR
-
GEG
13h 05m
1 stop
Delta Logo
3:30 pm - 3:35 pm
GEG
-
LHR
16h 05m
1 stop
$786Delta
Mon, Apr 6 - Thu, Apr 23
Delta Logo
12:25 pm - 9:29 pm
LHR
-
GEG
17h 04m
1 stop
Delta Logo
7:38 pm - 3:35 pm
GEG
-
LHR
11h 57m
1 stop
$798Delta
Mon, Apr 27 - Mon, May 4
Lufthansa Logo
6:30 am - 9:35 pm
LHR
-
GEG
23h 05m
2 stops
Lufthansa Logo
12:25 pm - 2:10 pm
GEG
-
LHR
17h 45m
1 stop
$806Lufthansa
Mon, Apr 27 - Mon, May 4
Lufthansa Logo
7:30 am - 9:35 pm
LHR
-
GEG
22h 05m
2 stops
Lufthansa Logo
12:25 pm - 5:40 pm
GEG
-
LHR
21h 15m
2 stops
$811Lufthansa
Wed, Jun 10 - Sun, Sep 6
Virgin Atlantic Logo
11:30 am - 11:44 pm
LHR
-
PSC
20h 14m
2 stops
Virgin Atlantic Logo
5:45 pm - 6:45 am
PSC
-
LHR
53h 00m
2 stops
$1,004Virgin Atlantic
Wed, Jun 10 - Sun, Sep 6
Virgin Atlantic Logo
5:45 pm - 11:44 pm
LHR
-
PSC
13h 59m
1 stop
Virgin Atlantic Logo
5:45 pm - 6:45 am
PSC
-
LHR
53h 00m
2 stops
$1,018Virgin Atlantic
Booking Insights

KAYAK's insights & trends for Heathrow to Washington flights

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

What is the cheapest London Heathrow Airport to Washington flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Washington from London Heathrow Airport found in the last 72 hours was to Seattle, at $809 round-trip. The most popular route is from London Heathrow Airport (LHR) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $809.

What is the cheapest time of day to fly to Washington?

The average price for all round-trip flights from London Heathrow Airport to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Washington is generally in the evening, when round-trip flights cost $834 on average. Morning departures are around 4% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $867.

Can I save money by flying with a layover from London Heathrow Airport to Washington?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $741 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to Washington, 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 Washington is February, when tickets cost $652 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $957 and $874 respectively.

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

The average price of all round-trip flights from London Heathrow Airport to Washington clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from London Heathrow Airport to Washington, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Washington, Wednesday is the cheapest day to fly and Friday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to Washington, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from London Heathrow Airport to Washington, you should book around 2 weeks before departure, which saves you about 15% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$430
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from London Heathrow Airport to Portland

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 from London Heathrow Airport to Washington 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 from London Heathrow Airport to Washington with an airline and back 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 from London Heathrow Airport to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Heathrow to Washington

 
See real verified KAYAK customer reviews for airlines flying from London to Washington. 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 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.
7.9
DeltaOverall score based on 8288 reviews
7.2Food
8.5Crew
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

2.0 MediocreDouglas, Mar 2026
MSP - SEA
Read more Delta reviews

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Miserable. This entire round trip was miserable. I booked evening flights to and from Detroit on consecutive days that should have had me at my destination by 10:30. Instead I arrived after 3am on my flight to Detroit and after midnight on my return. Multiple unforced errors like awaiting bags to get put on the plane for almost an hour in Detroit and a 20 minute delay to pull up to the gate in Atlanta has me rethinking my assumption that delta is the best and most reliable airline

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

I wish the inflight entertainment system options were broader, but overall this was a fantastic crew and I can’t express how cheerful, welcoming, and attentive they were.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

An delay of almost 3 hours while passengers were already in the plane kept us very uncomfortable. The food was also very limited. A bad experience overall.

I understand that there is a catering issue - water should be the minimum stock. During the flight, not once that the attendants came through with water. The conversations in the kitchen were very loud and they were swearing. I do not expect any white glove service, at the minimum, we should be cordial. It was almost an inconveniece that we were on the flight. And it made us feel if you even dare question us, we'll make you deplane.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

The business class seats are dated and uncomfortable. The space is bare minimum and there is absolutely no privacy. For $4K, this is not what I expect.

Flight, food and crew were all good, friendly and very satisfactory.

Lost luggage after 2 days no word leaving on cruise no stuff or clothes

Staff's did their best to make everyone comfortable and I appreciate them for it

Pathetic check in experience once again. Not enough staff scheduled at bag drop or for special assistance at LHR. Really need to rethink the whole self check in procedure. The crew was good. A very decent selection of special meals in this leg as compared to the JFK-LHR leg.

the service on Business class should be improved to be at par with industry leaders like Cathay Pacific and Singapore AIrlines. A lot of room for improvement.

Late takeoff, but on time landing. Lost bags, 3 days to find them, still in transit to my location. Power outlets broken, Wi-Fi not working, so much for working on the long flight.

Good. For a long flight. The comfort of the seat could be better. Also, the food was « normal » plane food. Not indian plane food unfortunately! Everything else was smooth and great.

The seats were comfortable. So many empty seats allowed for stretching out and sleeping. The onboard entertainment was pretty good. The cabin crew were so kind and kept the passengers well- hydrated, and well fed.

We had American Airlines on our return and it was confusing if we were going with Aa or BA I had 2 different flight numbers and didn’t get our gate until it was boarding. So we were a bit nervous as the which it was

My touch screen at my seat wasn't working, the films BA advertised on the website for this flight were not available, and the plane was a little dated, food was good and the staff were good, just let down by the aircraft facilities.

Did not like the seating configuration at all with 2+3+2 in business class. Lacking total privacy and comfort

Check-in experience, for business call please provide a premium experience

Lost my luggage, ran out of food choices in business class, ground crew was completely unapologetic.

Excellent. The crew and flight were great. Checking in was easy and everyone was very helpful.

Everything you need to know for your flight from Heathrow to Washington

Information on your arrival and departure airports