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Not ready to book? to track prices.Find the cheapest flights from London Heathrow Airport to Washington, D.C.
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United Airlines flights from London Heathrow Airport to Washington, D.C.
Our best United Airlines deals on London Heathrow Airport to Washington, D.C. flight tickets
Austrian Airlines flights from London Heathrow Airport to Washington, D.C.
Our best Austrian 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 cheapest month to fly to Washington, D.C. from London Heathrow Airport is in February. Flight prices, which tend to average around €614, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Washington, D.C. from London Heathrow Airport during January instead. Flights to Washington, D.C. in January, while not as cheap as those in February, still average around €630.
What is the cheapest day to depart on your flight to Washington, D.C.?
The cheapest day to depart from London Heathrow Airport to Washington, D.C. is on a Monday. Travellers who choose to depart for Washington, D.C. on a Monday will often find tickets for as low as €0. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. on Sunday is €900.
What is the cheapest time of day to depart on your flight to Washington, D.C.?
Flying to Washington, D.C. from London Heathrow Airport at midday is the least expensive time of day to depart. momondo users have found prices as low as €0 when looking at flights departing at midday. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €900 on average. Flights to Washington, D.C. from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.
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 24 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €728 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 Heathrow Airport for as low as €652 on momondo.
How many flights depart from London Heathrow Airport to Washington, D.C. on average per day?
The number of flights available between London Heathrow Airport and Washington, D.C. is 31 per day as of April 2025. The most frequent departure time is 12:00, with 100% of daily flights leaving in the afternoon.
How many flights depart from London Heathrow Airport to Washington, D.C. on average per week?
As of April 2025, 223 flights take off from London Heathrow Airport and land in Washington, D.C. each week. The most common flight departure day for this route is Fri, with 16% of weekly flights 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 | €411 |
|---|---|
Fastest flight time | 8h 00m |
Direct flights | Tue, Wed, Thu, Fri, Sat and Sun |
Airports in Washington, D.C. | 2 airports |
How far is London Heathrow to Washington, D.C. by plane?
Washington, D.C. is 5873.1 km away from London Heathrow. 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 refreshed on a daily basis.
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 stopovers. 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 travel and health documents required for your trip to Washington, D.C. can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Washington, D.C.. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London Heathrow Airport to Washington, D.C.?
Based on momondo bookings for flights between London Heathrow Airport and Washington, D.C., the leading plane model is Boeing 777, making up 30.79% of the total bookings. Other popular models include Airbus A380-800 with 14.10%, Boeing 777-300ER with 11.04%, and Airbus A330-900neo with 8.97%.
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.?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.
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?
If you are not ready to book a flight from London to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.