Cheap flights from London Heathrow Airport to Washington, D.C. from $329
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 Heathrow Airport to Washington, D.C. departing on 5/7. 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 Heathrow Airport to Washington, D.C.
Our best Icelandair deals on London Heathrow Airport to Washington, D.C. flight tickets
American Airlines flights from London Heathrow Airport to Washington, D.C.
Our best American Airlines deals on London Heathrow Airport to Washington, D.C. flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from London Heathrow Airport 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 Heathrow Airport 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 Heathrow Airport, with most prices found around $699. If you’re not able to fly to Washington, D.C. in February, then January is your next best option. Flight prices from London Heathrow Airport to Washington, D.C. during January average around $716.
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 Heathrow Airport is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $854. 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 Heathrow Airport to Washington, D.C. for around $978.
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 Heathrow Airport 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 $928. Of course, these prices can vary depending on the time of year and what airport you fly to.
What is the cheapest London Heathrow to Washington, D.C. flight route?
Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London Heathrow - 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 Heathrow Airport when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $875 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Heathrow Airport for as low as $740 on momondo.
What cabin class options are available on London Heathrow to Washington, D.C. flights?
There are 4 cabin classes available to choose from on London Heathrow 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 Heathrow to Washington, D.C.?
TAP AIR PORTUGAL is the most popular carrier operating from London Heathrow 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 Heathrow Airport according to our data. British Airways is the first choice among our users, with 56% 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 Heathrow Airport to Washington, D.C. on average per day?
27 flights are operational daily from London Heathrow Airport to Washington, D.C. as of April 2025. The most popular departure time for this route is 12:00PM, with 97% of flights per day taking off in the afternoon.
How many flights depart from London Heathrow Airport to Washington, D.C. on average per week?
192 flights are operational weekly from London Heathrow Airport to Washington, D.C. as of April 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.
When to book flights from London Heathrow Airport to Washington, D.C.
Cheap London Heathrow Airport to Washington, D.C. (LHR to WAS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Washington, D.C.
Best Price Found | $329 |
|---|---|
Fastest flight time | 8h 00m |
Direct flights | Every day |
Airports in Washington, D.C. | 3 airports |
How far is London Heathrow to Washington, D.C. by plane?
The distance between London Heathrow and Washington, D.C. is about 3649.4 mi. A reasonable flight in good conditions will take 8h 00m.
When did momondo last update prices for flights from London Heathrow Airport to Washington, D.C.?
Prices for flights from London Heathrow Airport to Washington, D.C. are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Washington, D.C.?
As of April 2025, there are 13 operators available to choose from for flights from London Heathrow Airport to Washington, D.C..
How old do you have to be to fly from London Heathrow Airport to Washington, D.C.?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to Washington, D.C.?
momondo data reveals that the most frequently booked plane model on the route from London Heathrow Airport to Washington, D.C. is Boeing 777, representing 31.39% of all bookings. The subsequent popular models are Airbus A380-800 at 12.21%, Boeing 777-300ER at 9.52%, and Airbus A330-300 at 7.82%.
What is the most popular airline from London Heathrow Airport to Washington, D.C.?
momondo data reveals that the most frequently booked airline on the route from London Heathrow Airport to Washington, D.C. is British Airways, representing 31% of all bookings. The subsequent popular airlines are United Airlines at 12%, Icelandair at 11%, and Delta at 11%.
Best airlines flying from London Heathrow Airport to Washington, D.C.
Compare and see reviews for airlines that fly from London Heathrow Airport to Washington, D.C. with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $390 | Free Cancellation | Rating 7.3 1,328 reviews | |||
| PriceFrom $392 | Free Cancellation | Rating 6.9 97 reviews | |||
| PriceFrom $431 | Free Cancellation | Rating 7.5 771 reviews | |||
| PriceFrom $475 | Free Cancellation | Rating 8.0 7,898 reviews | |||
| PriceFrom $529 | Free Cancellation | Rating 7.0 476 reviews | |||
| PriceFrom $564 | Free Cancellation | Rating 7.1 1,831 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.0 2,655 reviews | |||
| PriceFrom $594 | Free Cancellation | Rating 6.6 6,715 reviews | |||
| PriceFrom $619 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $660 | Free Cancellation | Rating 7.0 1,060 reviews |
Delta Flights From London Heathrow Airport to Washington, D.C.
Delta flies from London Heathrow Airport to Washington, D.C. around 6 times per week, with 7,898 momondo users rating the airline 8.0/10. The cheapest Delta deal from London Heathrow Airport to Washington, D.C. in the last 72 hours was $475 (round-trip), much lower than the average airfare cost of $930 for Delta flights on this route.
Austrian Airlines Flights From London Heathrow Airport to Washington, D.C.
Across 771 Austrian Airlines reviews on momondo, the average score is 7.5/10. Austrian Airlines flies from London Heathrow Airport to Washington, D.C. about 14 times each week, with ticket deals ranging from $431 to $858. Price data is based on momondo 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.?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Washington, D.C. for you.
Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Washington, D.C. from London with this policy.
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?
Yes momondo offers price alerts on flights to Washington, D.C. from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.