$514 Find Cheap Flights from London to Washington - Compare and Save

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Cheap Flights from London to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Seattle
Seattle1 stop$542
Spokane
Spokane2 stops$851
Seattle
Seattle1 stop$542
Spokane
Spokane2 stops$851
Booking Insights

KAYAK's insights & trends for London to Washington flights

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

How much is a round-trip flight from London to State of Washington?

Flight prices are below average for this route right now.

Flights to State of Washington from London usually cost between $590 and $780 in December.
The lowest price found in the past 5 days was $542 on Multiple Airlines (Dec 5-Dec 12).

What is the cheapest London to Washington flight route?

The cheapest ticket to Washington from London found in the last 5 days was to Seattle, at $546 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 5 days was $546.

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

The cheapest time of day to fly to Washington is generally in the afternoon, when round-trip flights cost $704 on average. Morning departures are around 2% 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 $877.

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

No, with an average price for the route of $578, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from London to Washington is February, when tickets cost $650 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $864 and $855 respectively.

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

Your flight ticket price will generally be cheaper if you fly to Washington on a Monday and more expensive on a Saturday. On your return trip to London, you should consider flying back on a Monday, and avoid Saturdays for better deals.

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

To get a below average price on the flight from London to Washington, you should book around 5 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

February

Cheapest flight

$514
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from London Gatwick Airport to Seattle

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from London 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 to Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London 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 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 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 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 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 5 airlines serving from London to Washington

 
Need help choosing which airline to fly with from London 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
Alaska AirlinesOverall score based on 13109 reviews
7.8Comfort
7.0Food
8.5Crew
7.0Entertainment
8.1Boarding
Airline reviews

No free internet, lazy flight attendants that did not like to serve drinks. Blamed it on turbulence but there was not any.

6.0 GoodAnonymous, Oct 2026
Read more Alaska Airlines reviews

No free internet, lazy flight attendants that did not like to serve drinks. Blamed it on turbulence but there was not any.

Gate agent was VERY efficient, even as his 2nd wasn't there. But... Great Landing! (I suspect he's done this before.)

The seats couldn’t be more uncomfortable. Even for a 2 hour flight.

I like the customer service. I was upgraded on flight, so enjoyed the better seat selection

Food was not so good, there was no WiFi, and the seats were very uncomfortable for a long flight.

The boarding was fairly good, the flight attendants were efficient & patient, we had a decent snack for food, the arrival was smooth. Very happy with my overall experience!

Needed a bit of help to gate. Everyone was pleasant and helpful. The crew on the flight was amazing.

The only thing I had issue with was the screaming 2-3 year old behind me who decided at the beginning and end of our trip we needed to listen to her literally scream at the top of her lungs and throw a huge tantrum- it had nothing to do with ear pressure. Nothing the air line can do about that. SMH. Crew and all employees were fantastic

Alaska was fine. My issue is with the booking via Kayak. The seating charts I picked seats from were wrong, I chose window seats (E) but those were actually middle seats on the plane.

we booked with Alaska but the flight was operated by AA, and this meant we were unable to check in online. We arrived at the airport to check in over 3 hours before the scheduled flight time, but were not able to be seated together (2 people on the same booking). So we had middle seats solo on a 11 hour flight which sucked

Crew members were nice and professional. TV, you have to press very hard on the screen to get it to respond and WiFi didn’t work. Overall okay flight

Crew and support were very good; lounge was very good. Seat was narrow and very close to other passengers; lie flat is more complicated and exposed to the aisleways.

London to Atlanta was good. Atlanta to Phoenix was not. Poor boarding as I had to check my rollerboard even though there was plenty of room in the bins. Crew seemed inexperienced. Sat just off the gate for nearly 30 minutes with no explanation from the pilot while the cabin got hot. I typically have a much better experience with Delta.

Wonderful crew, great movie selection and good food. I prefer Airbus to Boeing, much more comfortable

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.

Flight was operated by Virgin Atlantic and it was up to their usual high standard. Minor grips about some issues, but they are really first world issues and as a whole, was an excellent flight.

I paid for a business class ticket on Delta. It was sourced to Virgin Atlantic. They changed out the aircraft which had fewer upper class tickets. Even though I'd checked into the lounge, was receiving alerts via kayak about the delay and changes; no one informed me that the seat would be changed - until I attempted to board and was told that I would have an economy seat or they could search to put me on another airline. Even the flight crew were informed of this change (10 passengers were bumped out of Upper Class) around 2 pm (1400) time. Hours would have helped to consider alternatives instead of making a last minute change. There needs to be compensation from both Delta and Virgin given this change in service/experience.

Movie selection was meh. Food was great. Crew as always great. I paid for premium because that’s the only way not to feel like a sardine. That’s how economy should be imo. Sadly passengers have to pay an extra $1000 to get what they should at base price but that’s all airlines. The airline industry in general treats passengers as cargo.

Ongoing flight was delayed. Staff at bag recheck was able to get us on an earlier flight. With only 20 minutes till take off we feared our bags would not make the new earlier flight. We were most delighted that they did and were there when we landed. Delta came through

Entertainment was good. The crew members were professional. Food needs to get better. My stomach was upset after dinner.

Lounge was top notch h with great variety of food and drinks. Cabin crew were great. Smooth flight.

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

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

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

Security area in terminal 3 needs to be made much nicer. Less claustrophobic and use of glass and big ceilings wouldhelp

accomodating check in staff, friendly flight crew ( a crew member was speaking tactlessly and was overfamiliar with passengers

Seats need to be updated. Allowance needs to be made for dinner service at an alternative time

If I could fly Virgin Atlantic airlines to every place, I need to go, I would. Leaving Heathrow through the special virgin air entrance, security is completely white glove service. I love this airline. From ticketing agents to flight staff everyone tries to make it a wonderful & happy flight experience. I wish other airlines copied the positive culture of Virgin Airlines.

Premium was very comfortable. Food was delicious. I had specific diet requirement and Virgin Atlantic ensured it was provided. Onboard crew was very friendly and caring. Extremely smooth journey. I wonder how upper class experience would be. Perhaps one day, I will try upper class.

On arrival to JFK it to 3.5hrs to clear immigration, as only 3 booths open. Almost missed connection

Let's just say I won't do it again.

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

1. No food on a 8 hr flight is a travesty! The fare was not that low. 2. The entertainment was pretty bad and you had to buy headphones!!! 3. Only 2 toilets for the whole Economy section!!

The Icelandair crew was so kind!!! Thank you for making my first trip to Paris a great one!

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

did internet check in but still had to get checked in at the counter and this was not the first time. Bummer!

Paying $75 for my bag is disgusting. Got off ground late so I missed my connections. Kept us waiting for passengers in the cold. Will not use them again.

Crew members were thorough in checking seatbelts and whatnot which makes me feel cared for because passenger safety is a main concern.

Smooth flight. The seats were comfortable but the reclining mechanism didn't work very well. My wife's seat required the flight attendant to push the seat forward while she pushed the button. The leg support didn't want to return to its home under the seat. I ordered the diabetic meal which was full of carbs. It was low in sugar but carbs turn into sugar so was it really diabetic? Overall the flight was pleasant, long but pleasant.

The crew was very nice and pleasant. We were very reluctant to book our flight with British Airlines because we had bad experience with their flight attendants on the previous trips, they were rude and not helpful.

Adequate to good experience. Comfort was mediocre but everything else was good..

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

Had a very bad experience flying out of London. Our initial flight was cancelled without notice and the next flight had a layover of 8 extra hours. Me, my husband and my 8-year-old were already sick, and this further added to our problems. We paid extra for the seats: I was not even given our chosen seats which we paid for months before the trip. We were shoved into the available seats which were middle ones in the back (we had paid for front window, aisle, aisle). The seats were so uncomfortable and getting out of middle seats every so often (with a sick child) was a task. We had initially chosen British Airways because of the short layover, however, that went out of the window. Although unexpected things happen all the time and I understand customers have to adjust for the unplanned, however, how the airlines react and make the passengers comfortable during that time is the real test. We were not given any compensation for food or any arrangement to stay comfortable during that time. In fact, our paid seats were taken away as well.

Crew very helpful and friendly. Food is so so. Main meal is not always the best. Did have a choice of a snack part way which was either a cookie, corn snack, or similar. Second kind of meal was basically like a pizza pastry that really wasn’t a favorite but probably a European snack? Screens and selections of movies, tv and such were good. No WI-Fi unless you buy so no free texting or such on the long flight but I think that might be any overseas flight.

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

British airways keeps canceling our flights. I won’t be booking any future flights with them

Flight to Seattle was fine. We were delayed getting into our gate. The connection time was short and they make you go through security again which was slow.

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