Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Heathrow Airport to Washington, D.C. from €474

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 16/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted the Winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
12:15 - 18:40
LHR
-
BWI
11h 25m1 stop
Icelandair Logo
19:40 - 10:50
BWI
-
LHR
10h 10m1 stop
€476Icelandair
Thu, 22 Jan - Mon, 26 Jan
Icelandair Logo
12:15 - 18:40
LHR
-
BWI
11h 25m1 stop
Icelandair Logo
19:40 - 10:50
BWI
-
LHR
10h 10m1 stop
€477Icelandair
Thu, 22 Jan - Thu, 29 Jan
British Airways Logo
08:50 - 15:35
LHR
-
IAD
11h 45m1 stop
British Airways Logo
18:20 - 06:30
IAD
-
LHR
7h 10mdirect
€478British Airways
Fri, 6 Feb - Thu, 19 Feb
Delta Logo
10:00 - 23:01
LHR
-
BWI
17h 01m2 stops
Delta Logo
14:38 - 10:15
BWI
-
LHR
15h 37m2 stops
€479Delta
Fri, 13 Mar - Sun, 15 Mar
British Airways Logo
08:50 - 15:35
LHR
-
IAD
11h 45m1 stop
British Airways Logo
18:20 - 06:30
IAD
-
LHR
7h 10mdirect
€480British Airways
Tue, 3 Feb - Tue, 10 Feb
Delta Logo
06:30 - 20:27
LHR
-
BWI
17h 57m2 stops
Delta Logo
07:24 - 06:25
BWI
-
LHR
19h 01m1 stop
€481Delta
Fri, 13 Mar - Sun, 15 Mar
Virgin Atlantic Logo
11:30 - 23:01
LHR
-
BWI
15h 31m2 stops
Virgin Atlantic Logo
10:11 - 06:25
BWI
-
LHR
15h 14m2 stops
€482Virgin Atlantic
Mon, 16 Mar - Sun, 19 Apr
United Airlines Logo
09:00 - 16:40
LHR
-
IAD
12h 40m1 stop
United Airlines Logo
18:20 - 06:40
IAD
-
LHR
7h 20mdirect
€484United Airlines
Thu, 5 Feb - Thu, 12 Feb
Virgin Atlantic Logo
11:30 - 23:01
LHR
-
BWI
15h 31m2 stops
Virgin Atlantic Logo
11:52 - 06:45
BWI
-
LHR
13h 53m1 stop
€485Virgin Atlantic
Thu, 26 Mar - Sun, 12 Apr
United Airlines Logo
09:00 - 16:40
LHR
-
IAD
12h 40m1 stop
United Airlines Logo
12:55 - 07:10
IAD
-
LHR
13h 15m2 stops
€487United Airlines
Fri, 6 Feb - Fri, 13 Feb

British Airways flights from London Heathrow Airport to Washington, D.C.

Our best British Airways deals on London Heathrow Airport to Washington, D.C. flight tickets
British Airways
6 Feb
LHR08:50London Heathrow
11h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
19 Feb
IAD18:20Washington, D.C. Dulles Intl
7h 10m
LHR06:30London Heathrow
€478
British Airways
3 Feb
LHR08:50London Heathrow
11h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
10 Feb
IAD18:20Washington, D.C. Dulles Intl
7h 10m
LHR06:30London Heathrow
€480
British Airways
5 Feb
LHR08:50London Heathrow
11h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
12 Feb
IAD21:45Washington, D.C. Dulles Intl
7h 15m
LHR10:00London Heathrow
€481

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
United Airlines
5 Feb
LHR09:00London Heathrow
12h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
12 Feb
IAD18:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
€484
United Airlines
6 Feb
LHR09:00London Heathrow
12h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
13 Feb
IAD12:55Washington, D.C. Dulles Intl
13h 15m
2 stops
LHR07:10London Heathrow
€487
United Airlines
27 May
LHR08:40London Heathrow
13h 05m
1 stop
IAD16:45Washington, D.C. Dulles Intl
1 Jun
IAD18:30Washington, D.C. Dulles Intl
7h 25m
LHR06:55London Heathrow
€488

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 9 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 22/1

12:15-18:40

1 stop11h 25m

Baltimore/Washington

Mon 26/1

19:40-10:50

1 stop10h 10m

€476

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 22/1

12:15-18:40

1 stop11h 25m

Baltimore/Washington

Thu 29/1

19:40-10:50

1 stop10h 10m

€477

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 6/2

08:50-15:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 19/2

18:20-06:30

Nonstop7h 10m

€478

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Fri 13/3

10:00-23:01

2 stops17h 01m

Baltimore/Washington

Sun 15/3

14:38-10:15

2 stops15h 37m

€479

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/2

08:50-15:35

1 stop11h 45m

Washington, D.C. Dulles Intl

Tue 10/2

18:20-06:30

Nonstop7h 10m

€480

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Fri 13/3

06:30-20:27

2 stops17h 57m

Baltimore/Washington

Sun 15/3

07:24-06:25

1 stop19h 01m

€481

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Mon 16/3

11:30-23:01

2 stops15h 31m

Baltimore/Washington

Sun 19/4

10:11-06:25

2 stops15h 14m

€482

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 5/2

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 12/2

18:20-06:40

Nonstop7h 20m

€484

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 26/3

11:30-23:01

2 stops15h 31m

Baltimore/Washington

Sun 12/4

11:52-06:45

1 stop13h 53m

€485

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 6/2

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 13/2

12:55-07:10

2 stops13h 15m

€487

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 September. Flight prices, which tend to average around €552, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, 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 September, still average around €565.

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 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €645 when searching weeks before you fly. 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 €597 on momondo.

What cabin class options are available on London Heathrow to Washington, D.C. flights?

There is only 1 cabin class 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.

How have London Heathrow Airport to Washington, D.C. flight prices changed over time?

As of January 2026, prices for London Heathrow Airport to Washington, D.C. flights are approximately 8% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

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.

Fastest flight time

8h 10m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The fastest flight from London Heathrow Airport to Washington, D.C. takes 8h 10m
Direct flights go from London Heathrow Airport to Washington, D.C. every day.
There are 2 airports in Washington, D.C.. From London Heathrow Airport there are direct flights to Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • 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 10m.

  • 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.?

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Gettysburg

Why 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.

An easier way to manage your Washington, D.C. trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/2
Sun 15/2
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 36.1 km from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport