Cheap flights from London to Washington, D.C. from €472

This is the cheapest return 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 25/11. 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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0 bags
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Cheap return flights

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TAP AIR PORTUGAL Logo
06:00 - 14:35LHR-IAD
13h 35m1 stop
TAP AIR PORTUGAL Logo
17:30 - 22:40IAD-LHR
24h 10m1 stop
€472TAP AIR PORTUGAL
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Sal, 25 Kas - Sal, 2 Ara
United Airlines Logo
18:00 - 20:29LHR-IAD
30h 29m1 stop
United Airlines Logo
19:20 - 06:40IAD-LHR
7h 20mdirect
€512United Airlines
Find Deal
Cmt, 14 Mar - Pzt, 16 Mar
Scandinavian Airlines Logo
19:50 - 18:50LHR-IAD
28h 00m2 stops
Scandinavian Airlines Logo
20:30 - 18:50IAD-LHR
17h 20m2 stops
€524Scandinavian Airlines
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Cum, 16 Oca - Çar, 21 Oca
Scandinavian Airlines Logo
19:50 - 18:50LHR-IAD
28h 00m2 stops
Scandinavian Airlines Logo
20:30 - 16:25IAD-LHR
14h 55m2 stops
€524Scandinavian Airlines
Find Deal
Cum, 16 Oca - Cmt, 31 Oca
Icelandair Logo
12:15 - 19:40LHR-BWI
11h 25m1 stop
Icelandair Logo
19:40 - 10:50BWI-LHR
10h 10m1 stop
€572Icelandair
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Cum, 31 Eki - Cmt, 8 Kas
Icelandair Logo
12:15 - 19:40LHR-BWI
11h 25m1 stop
Icelandair Logo
19:40 - 19:30BWI-LHR
18h 50m1 stop
€573Icelandair
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Cum, 31 Eki - Per, 13 Kas
Delta Logo
11:45 - 23:31LHR-BWI
16h 46m2 stops
Delta Logo
14:10 - 06:25BWI-LHR
11h 15m1 stop
€576Delta
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Sal, 23 Ara - Per, 8 Oca
Virgin Atlantic Logo
11:45 - 23:03LHR-BWI
16h 18m2 stops
Virgin Atlantic Logo
17:36 - 08:45BWI-LHR
10h 09m1 stop
€577Virgin Atlantic
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Pzt, 15 Ara - Paz, 28 Ara
Delta Logo
08:40 - 23:00LHR-BWI
19h 20m2 stops
Delta Logo
10:47 - 06:25BWI-LHR
14h 38m2 stops
€580Delta
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Cmt, 22 Kas - Per, 4 Ara
Virgin Atlantic Logo
06:30 - 17:16LHR-BWI
15h 46m2 stops
Virgin Atlantic Logo
13:51 - 06:25BWI-LHR
11h 34m1 stop
€580Virgin Atlantic
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Çar, 19 Kas - Paz, 23 Kas

TAP AIR PORTUGAL flights from London to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London to Washington, D.C. flight tickets
TAP AIR PORTUGAL
25 Nov
LHR06:00London Heathrow
13h 35m
1 stop
IAD14:35Washington, D.C. Dulles Intl
2 Dec
IAD17:30Washington, D.C. Dulles Intl
24h 10m
1 stop
LHR22:40London Heathrow
TAP AIR PORTUGAL
12 Dec
LHR12:25London Heathrow
13h 35m
1 stop
IAD21:00Washington, D.C. Dulles Intl
11 Jan
IAD22:30Washington, D.C. Dulles Intl
33h 10m
1 stop
LHR12:40London Heathrow
TAP AIR PORTUGAL
9 Dec
LHR06:00London Heathrow
13h 35m
1 stop
IAD14:35Washington, D.C. Dulles Intl
13 Dec
IAD17:30Washington, D.C. Dulles Intl
12h 55m
1 stop
LHR11:25London Heathrow

United Airlines flights from London to Washington, D.C.

Our best United Airlines deals on London to Washington, D.C. flight tickets
United Airlines
14 Mar
LHR18:00London Heathrow
30h 29m
1 stop
IAD20:29Washington, D.C. Dulles Intl
16 Mar
IAD19:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
United Airlines
12 Nov
LHR06:35London Heathrow
14h 00m
1 stop
IAD15:35Washington, D.C. Dulles Intl
16 Dec
IAD12:55Washington, D.C. Dulles Intl
13h 15m
2 stops
LHR07:10London Heathrow
United Airlines
12 Nov
LHR08:30London Heathrow
12h 20m
1 stop
IAD15:50Washington, D.C. Dulles Intl
24 Nov
IAD08:45Washington, D.C. Dulles Intl
17h 25m
2 stops
LHR07:10London Heathrow

momondo Fare Finder

 
Customise your flight search to find flights from London 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 16 Ekim 2025.
Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sal 25/11

06:00-14:35

1 stop13h 35m

Washington, D.C. Dulles Intl

Sal 2/12

17:30-22:40

1 stop24h 10m

€472

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Cmt 14/3

18:00-20:29

1 stop30h 29m

Washington, D.C. Dulles Intl

Pzt 16/3

19:20-06:40

Nonstop7h 20m

€512

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Cum 16/1

19:50-18:50

2 stops28h 00m

Washington, D.C. Dulles Intl

Çar 21/1

20:30-18:50

2 stops17h 20m

€524

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Cum 16/1

19:50-18:50

2 stops28h 00m

Washington, D.C. Dulles Intl

Cmt 31/1

20:30-16:25

2 stops14h 55m

€524

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Cum 31/10

12:15-19:40

1 stop11h 25m

Baltimore/Washington

Cmt 8/11

19:40-10:50

1 stop10h 10m

€572

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Cum 31/10

12:15-19:40

1 stop11h 25m

Baltimore/Washington

Per 13/11

19:40-19:30

1 stop18h 50m

€573

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Sal 23/12

11:45-23:31

2 stops16h 46m

Baltimore/Washington

Per 8/1

14:10-06:25

1 stop11h 15m

€576

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Pzt 15/12

11:45-23:03

2 stops16h 18m

Baltimore/Washington

Paz 28/12

17:36-08:45

1 stop10h 09m

€577

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Cmt 22/11

08:40-23:00

2 stops19h 20m

Baltimore/Washington

Per 4/12

10:47-06:25

2 stops14h 38m

€580

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Çar 19/11

06:30-17:16

2 stops15h 46m

Baltimore/Washington

Paz 23/11

13:51-06:25

1 stop11h 34m

€580

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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 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 €533, 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 during September instead. Flights to Washington, D.C. in September, while not as cheap as those in February, still average around €549.

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 weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around €671 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 for as low as €634 on momondo.

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

There is only 1 cabin class 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?

No. A direct flight is the cheapest option for a flight between London to Washington, D.C..

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

As of October 2025, prices for London to Washington, D.C. flights are approximately 131% more expensive when compared to flights at the same time last year.

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

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

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.

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The fastest flight from London to Washington, D.C. takes 8h 00m
Direct flights go from London to Washington, D.C. every day.
There are 2 airports near Washington, D.C.: Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
  • How far is London to Washington, D.C. by plane?

    A flight from London to Washington, D.C. will travel around 5893.9 km. By plane, this route typically takes 8h 40m.

  • When did momondo last update prices for flights from London to Washington, D.C.?

    Prices for flights from London to Washington, D.C. refresh daily.

  • How old do you have to be to fly from London to Washington, D.C.?

    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 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 licence 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.?

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.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

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?

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 London and alert you when they change.

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

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1 adult
Cmt 15/11
Cmt 22/11

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.