Cheap flights from London to Washington, D.C. from $221
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington, D.C. departing on 4/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Icelandair flights from London to Washington, D.C.
Our best Icelandair deals on London to Washington, D.C. flight tickets
KLM flights from London to Washington, D.C.
Our best KLM deals on London to Washington, D.C. flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from London to Washington, D.C.
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between London and Washington, D.C.?
What is the cheapest month to fly to Washington, D.C.?
The month of February is, on average, the cheapest month to fly to Washington, D.C. from London, with most prices found around $624. If you’re not able to fly to Washington, D.C. in February, then September is your next best option. Flight prices from London to Washington, D.C. during September average around $641.
What is the cheapest day to depart on your flight to Washington, D.C.?
On average, the least expensive day to fly to Washington, D.C. from London is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $867. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from London to Washington, D.C. for around $979.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
In the evening is the cheapest time of day to fly from London to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $933. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London to Washington, D.C. flight route?
Fly from London Gatwick to Washington, D.C. Dulles Intl for the best London - Washington, D.C. flight prices
How far in advance should I book a flight to Washington, D.C.?
You are more likely to see cheaper flights to Washington, D.C. from London when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $829 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London for as low as $742 on momondo.
What cabin class options are available on London to Washington, D.C. flights?
There are 4 cabin classes available to choose from on London to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from London to Washington, D.C.?
PLAY is the most popular carrier operating from London to Washington, D.C.
What airlines fly to Washington, D.C.?
British Airways, United Airlines and Icelandair are the top three most popular airlines that fly to Washington, D.C. from London according to our data. British Airways is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 13 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.
How many flights depart from London to Washington, D.C. on average per day?
The number of flights available between London and Washington, D.C. is 20 per day as of March 2025. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.
How many flights depart from London to Washington, D.C. on average per week?
143 flights are operational weekly from London to Washington, D.C. as of March 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.
When to book flights from London to Washington, D.C.
Cheap London to Washington, D.C. (LON to WAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Washington, D.C.
Best Price Found | $249 |
|---|---|
Fastest flight time | 8h 00m |
Direct flights | Every day |
Airports in Washington, D.C. | 3 airports |
How far is London to Washington, D.C. by plane?
There are 3662.3 mi between London and Washington, D.C.. By plane, this route typically takes 8h 00m.
When did momondo last update prices for flights from London to Washington, D.C.?
Prices for flights from London to Washington, D.C. are updated daily.
How many operators does momondo search for flights from London to Washington, D.C.?
As of March 2025, there are 13 operators available to choose from for flights from London to Washington, D.C..
How old do you have to be to fly from London to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from London to Washington, D.C. is Boeing 777, representing 31.17% of all bookings. The subsequent popular models are Airbus A380-800 at 11.51%, Boeing 777-300ER at 9.15%, and Boeing 787-9 Dreamliner at 8.01%.
What is the most popular airline from London to Washington, D.C.?
Based on momondo bookings for flights between London and Washington, D.C., the leading airline is PLAY, making up 33% of the total bookings. Other popular airlines include British Airways with 19%, United Airlines with 8%, and Lufthansa with 6%.
Best airlines flying from London to Washington, D.C.
Compare and see reviews for airlines that fly from London to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $304 | Free Cancellation | Rating 6.9 97 reviews | |||
| PriceFrom $390 | Free Cancellation | Rating 7.3 1,325 reviews | |||
| PriceFrom $475 | Free Cancellation | Rating 8.0 7,890 reviews | |||
| PriceFrom $486 | Free Cancellation | Rating 7.0 474 reviews | |||
| PriceFrom $564 | Free Cancellation | Rating 7.1 1,825 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.0 2,646 reviews | |||
| PriceFrom $594 | Free Cancellation | Rating 6.6 6,712 reviews | |||
| PriceFrom $619 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $660 | Free Cancellation | Rating 7.0 1,061 reviews | |||
| PriceFrom $691 | Free Cancellation | Rating 6.7 6,950 reviews |
Delta Flights From London to Washington, D.C.
The lowest priced Delta flight from London to Washington, D.C. from the last 72 hours was $475. Generally, Delta has 4 flights on this route every week with an average price of $953. Delta is rated 8.0/10 by our users.
Austrian Airlines Flights From London to Washington, D.C.
Austrian Airlines (7.5/10 from 769 reviews) operates around 10 flights from London to Washington, D.C. in any given week. The average Austrian Airlines airfare for this route is around $881, with deals from around $702 rare but found on momondo. Referenced prices are for round-trip London to Washington, D.C. flight searches in the last 72 hours.
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Washington, D.C.?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.
Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.
How can momondo help me find flights from London to Washington, D.C.?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from London.
I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?
Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.