Cheap flights from London to Washington, D.C. from £191
This is the cheapest one-way 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 25/8. 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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American Airlines flights from London to Washington, D.C.
Our best American Airlines deals on London to Washington, D.C. flight tickets
British Airways flights from London to Washington, D.C.
Our best British Airways 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 cheapest month to fly to Washington, D.C. from London is in February. Flight prices, which tend to average around £458, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in February, then you should wait until November to fly from London, when ticket prices are also cheap, with an average price of £485.
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 Wednesday. momondo users have found tickets for Wednesday departures for as low as £617. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £692.
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 £505. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the afternoon, with an average ticket price of £650. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest London to Washington, D.C. flight route?
Fly from London Heathrow 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 22 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around £642 when searching 22 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 £535 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.
Can stopping save me money on London to Washington, D.C. flights?
You could potentially save up to 51% on your flight if you consider stops on a London to Washington, D.C. flight.
How have London to Washington, D.C. flight prices changed over time?
As of June 2025, prices for London to Washington, D.C. flights are approximately 56% more expensive when compared to flights at the same time last year.
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.
Which airlines fly to Washington, D.C.?
British Airways, Virgin Atlantic 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 49% of people opting to fly with this airline when travelling to Washington, D.C.. Keep in mind that there are 19 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?
29 flights are operational daily from London to Washington, D.C. as of June 2025. The most popular departure time for this route is 12:00, with 100% of flights per day taking off in the afternoon.
How many flights depart from London to Washington, D.C. on average per week?
The number of flights available between London and Washington, D.C. is 207 per week as of June 2025. The most frequent departure day is Wed, with 15% of weekly flights leaving 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 | £191 |
|---|---|
Fastest flight time | 8h 00m |
Direct flights | Every day |
Airports in Washington, D.C. | 2 airports |
How far is London to Washington, D.C. by plane?
The distance between London and Washington, D.C. is about 3662.3 mi. 8h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from London to Washington, D.C.?
Prices for flights from London to Washington, D.C. were last updated today.
How many operators does momondo search for flights from London to Washington, D.C.?
As of June 2025, there are 19 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.?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 required travel and health documents for your Washington, D.C. trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C.. We recommend that you seek guidance from your airline or a reliable 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 29.08% of all bookings. The subsequent popular models are Airbus A380-800 at 15.77%, Boeing 777-300ER at 10.21%, and Airbus A330-900neo at 10.11%.
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 30% of the total bookings. Other popular airlines include British Airways with 21%, Virgin Atlantic with 14%, and Lufthansa with 7%.
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 £186 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom £246 | Free Cancellation | Rating 7.0 102 reviews | |||
| PriceFrom £290 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom £346 | Free Cancellation | Rating 7.1 1,887 reviews | |||
| PriceFrom £352 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £375 | Free Cancellation | Rating 7.3 2,923 reviews | |||
| PriceFrom £377 | Free Cancellation | Rating 7.4 355 reviews | |||
| PriceFrom £433 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom £437 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom £448 | Free Cancellation | Rating 6.7 7,139 reviews |
Delta Flights From London to Washington, D.C.
Delta flight deals from London to Washington, D.C. start from £253 round-trip. Over the 7 Delta flights for this route in a normal week, average airfare is usually £743 round-trip - but some users have found much cheaper deals with momondo.
KLM Flights From London to Washington, D.C.
KLM (7.8/10 from 1,358 reviews) operates around 7 flights from London to Washington, D.C. in any given week. The average KLM airfare for this route is around £892, with deals from around £617 rare but found on momondo. Referenced prices are for round-trip London to Washington, D.C. flight searches in the last 72 hours.
Travelling 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.?
Finding the right flight to Washington, D.C. from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.
Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?
All flight searches from London to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Washington, D.C.?
Once you have performed a search for London to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?
Yes. momondo can track prices for London to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.