Cheap flights from the United Kingdom to Washington, D.C. from $347
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Washington, D.C. departing on 8/29. 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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Recent round-trip flight deals from the United Kingdom to Washington, D.C.
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United Airlines flights from United Kingdom to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines![United Airlines]()
Nov 29![United Airlines]()
Dec 17
LHR6:50 amLondon Heathrow
12h 45m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
IAD6:20 pmWashington, D.C. Dulles Intl
7h 20m
LHR6:40 amLondon Heathrow
United Airlines![United Airlines]()
Nov 30![United Airlines]()
Dec 14
LHR1:25 pmLondon Heathrow
11h 14m
1 stop
IAD7:39 pmWashington, D.C. Dulles Intl
IAD10:15 pmWashington, D.C. Dulles Intl
7h 35m
LHR10:50 amLondon Heathrow
TAP AIR PORTUGAL flights from United Kingdom to Washington, D.C. Dulles Intl Airport
Our best TAP AIR PORTUGAL deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
TAP AIR PORTUGAL![TAP AIR PORTUGAL]()
Sep 17![TAP AIR PORTUGAL]()
Oct 10
LHR6:45 pmLondon Heathrow
25h 35m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
IAD5:00 pmWashington, D.C. Dulles Intl
19h 45m
1 stop
LHR5:45 pmLondon Heathrow
TAP AIR PORTUGAL![TAP AIR PORTUGAL]()
Sep 18![TAP AIR PORTUGAL]()
Oct 5
LHR6:00 amLondon Heathrow
19h 50m
1 stop
IAD8:50 pmWashington, D.C. Dulles Intl
IAD5:45 pmWashington, D.C. Dulles Intl
19h 00m
1 stop
LHR5:45 pmLondon Heathrow
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from United Kingdom to Washington, D.C. Dulles Intl Airport
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
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Other information
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, March is the cheapest month to fly from United Kingdom to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $678. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $693.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Tuesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $827. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Washington, D.C. Dulles Intl Airport for around $970.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from United Kingdom in the evening is the least expensive time of day to depart. momondo users have found prices as low as $743 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $889 on average. Flights to Washington, D.C. Dulles Intl Airport from United Kingdom in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest United Kingdom to Washington, D.C. Dulles Intl flight route?
Fly from London Heathrow to Washington, D.C. Dulles Intl for the best United Kingdom - Washington, D.C. Dulles Intl flight prices
How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?
You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from United Kingdom when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $829 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from United Kingdom for as low as $766 on momondo.
What cabin class options are available on United Kingdom to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on United Kingdom to Washington, D.C. Dulles Intl 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 United Kingdom to Washington, D.C. Dulles Intl?
TAP AIR PORTUGAL is the most popular carrier operating from United Kingdom to Washington, D.C. Dulles Intl
What airlines fly to Washington, D.C. Dulles Intl Airport?
Aer Lingus, British Airways and United Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from United Kingdom according to our data. Aer Lingus is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 12 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from United Kingdom to Washington, D.C. Dulles Intl Airport on average per day?
28 flights are operational daily from United Kingdom to Washington, D.C. Dulles Intl Airport as of June 2025. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.
How many flights depart from United Kingdom to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, 200 flights take off from United Kingdom and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.
Cheap United Kingdom to Washington, D.C. Dulles Intl Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Washington, D.C. Dulles Intl Airport
When did momondo last update prices for flights from United Kingdom to Washington, D.C. Dulles Intl Airport?
Prices for flights from United Kingdom to Washington, D.C. Dulles Intl Airport refresh daily.
How many operators does momondo search for flights from United Kingdom to Washington, D.C. Dulles Intl Airport?
As of June 2025, there are 12 operators available to choose from for flights from United Kingdom to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from United Kingdom to Washington, D.C. Dulles Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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 United Kingdom to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from United Kingdom to Washington, D.C. Dulles Intl Airport is Boeing 777 (27.68% of total bookings). The next most popular plane models are Airbus A380-800 (15.87%), Airbus A330-900neo (9.76%), and Boeing 777-300ER (9.52%).
Best airlines flying from United Kingdom to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from United Kingdom to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $390 | Free Cancellation | Rating 7.3 1,393 reviews | |||
| PriceFrom $392 | Free Cancellation | Rating 7.0 102 reviews | |||
| PriceFrom $431 | Free Cancellation | Rating 7.6 804 reviews | |||
| PriceFrom $510 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $564 | Free Cancellation | Rating 7.1 1,892 reviews | |||
| PriceFrom $583 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $593 | Free Cancellation | Rating 7.1 1,118 reviews | |||
| PriceFrom $595 | Free Cancellation | Rating 6.6 7,019 reviews | |||
| PriceFrom $619 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $652 | Free Cancellation | Rating 8.0 7,963 reviews |
Traveling to a place near Washington, D.C.?
Book flights to Washington, D.C. if you plan to visit one of these locationsAlexandria
Gettysburg
Arlington
National Harbor
Winchester
Laurel
Woodbridge
Silver Spring
Tysons
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Gaithersburg
Towson
Rockville
Fairfax
Linthicum Heights
Glen Burnie
Reston
Why use momondo?
Why should I use momondo to find a flight deal from United Kingdom to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United Kingdom to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from United Kingdom to Washington, D.C. with flexible booking policies on momondo?
momondo does allow users to show only those flights to Washington, D.C. from United Kingdom which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from United Kingdom to Washington, D.C.?
momondo provides multiple filters to help you find the best flight to Washington, D.C. from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from United Kingdom to Washington, D.C. right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from United Kingdom and alert you when they change.
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