Cheap flights from London to District of Columbia from £371

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 to District of Columbia departing on 5/12. 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

Discover deals from 900+ travel sites with momondo.

Voted 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.

Find the cheapest flights from London to District of Columbia

Cheap return flights

United Airlines Logo
09:00 - 16:40LHR-IAD
12h 40m1 stop
United Airlines Logo
19:20 - 06:40IAD-LHR
7h 20mdirect
£393United Airlines
Find Deal
Tue, 3 Mar - Thu, 12 Mar
SWISS Logo
20:05 - 15:35LHR-IAD
23h 30m1 stop
SWISS Logo
20:30 - 16:20IAD-LHR
14h 50m1 stop
£394SWISS
Find Deal
Mon, 27 Oct - Fri, 7 Nov
Virgin Atlantic Logo
20:25 - 22:59LHR-DCA
30h 34m2 stops
Virgin Atlantic Logo
19:35 - 07:50DCA-LHR
31h 15m2 stops
£394Virgin Atlantic
Find Deal
Mon, 27 Oct - Fri, 7 Nov
Icelandair Logo
15:40 - 22:10LGW-IAD
11h 30m1 stop
Icelandair Logo
23:15 - 14:40IAD-LGW
10h 25m1 stop
£397Icelandair
Find Deal
Fri, 3 Oct - Sun, 5 Oct
Lufthansa Logo
11:30 - 20:15LHR-IAD
13h 45m1 stop
Lufthansa Logo
22:15 - 10:50IAD-LHR
7h 35mdirect
£397Lufthansa
Find Deal
Sat, 10 Jan - Sat, 24 Jan
Icelandair Logo
15:40 - 22:10LGW-IAD
11h 30m1 stop
Icelandair Logo
23:15 - 14:40IAD-LGW
10h 25m1 stop
£400Icelandair
Find Deal
Fri, 26 Sep - Fri, 3 Oct
Virgin Atlantic Logo
12:35 - 16:00LHR-IAD
8h 25mdirect
Virgin Atlantic Logo
19:59 - 11:25IAD-LHR
10h 26m1 stop
£400Virgin Atlantic
Find Deal
Wed, 1 Oct - Wed, 8 Oct
British Airways Logo
16:25 - 19:55LHR-IAD
8h 30mdirect
British Airways Logo
22:45 - 10:00IAD-LHR
7h 15mdirect
£401British Airways
Find Deal
Thu, 5 Mar - Thu, 12 Mar
British Airways Logo
17:00 - 23:07LHR-DCA
11h 07m1 stop
British Airways Logo
06:38 - 21:40DCA-LHR
10h 02m1 stop
£405British Airways
Find Deal
Mon, 29 Sep - Wed, 15 Oct
Lufthansa Logo
12:15 - 15:30LHR-IAD
8h 15mdirect
Lufthansa Logo
22:25 - 10:40IAD-LHR
7h 15mdirect
£419Lufthansa
Find Deal
Fri, 26 Sep - Tue, 30 Sep

United Airlines flights from London to District of Columbia

Our best United Airlines deals on London to District of Columbia flight tickets
United Airlines
3 Mar
LHR09:00London Heathrow
12h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
12 Mar
IAD19:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
United Airlines
22 Sept
LHR06:50London Heathrow
11h 40m
1 stop
IAD13:30Washington, D.C. Dulles Intl
28 Sept
IAD18:40Washington, D.C. Dulles Intl
7h 15m
LHR06:55London Heathrow
United Airlines
2 Mar
LHR07:40London Heathrow
12h 55m
1 stop
IAD15:35Washington, D.C. Dulles Intl
12 Mar
IAD19:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow

SWISS flights from London to District of Columbia

Our best SWISS deals on London to District of Columbia flight tickets
SWISS
27 Oct
LHR20:05London Heathrow
23h 30m
1 stop
IAD15:35Washington, D.C. Dulles Intl
7 Nov
IAD20:30Washington, D.C. Dulles Intl
14h 50m
1 stop
LHR16:20London Heathrow
SWISS
21 Nov
LHR06:00London Heathrow
15h 40m
1 stop
IAD16:40Washington, D.C. Dulles Intl
11 Dec
IAD18:20Washington, D.C. Dulles Intl
7h 20m
LHR06:40London Heathrow
SWISS
6 Nov
LGW18:40London Gatwick
25h 50m
1 stop
IAD15:30Washington, D.C. Dulles Intl
12 Nov
IAD17:25Washington, D.C. Dulles Intl
19h 25m
1 stop
LGW17:50London Gatwick

momondo Fare Finder

 
Customise your flight search to find flights from London to District of Columbia 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 279,928 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from London to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 3/3

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 12/3

19:20-06:40

Nonstop7h 20m

£393

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 27/10

20:05-15:35

1 stop23h 30m

Washington, D.C. Dulles Intl

Fri 7/11

20:30-16:20

1 stop14h 50m

£394

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 27/10

20:25-22:59

2 stops30h 34m

Washington, D.C. Reagan-National

Fri 7/11

19:35-07:50

2 stops31h 15m

£394

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 3/10

15:40-22:10

1 stop11h 30m

Washington, D.C. Dulles Intl

Sun 5/10

23:15-14:40

1 stop10h 25m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 10/1

11:30-20:15

1 stop13h 45m

Washington, D.C. Dulles Intl

Sat 24/1

22:15-10:50

Nonstop7h 35m

£397

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 26/9

15:40-22:10

1 stop11h 30m

Washington, D.C. Dulles Intl

Fri 3/10

23:15-14:40

1 stop10h 25m

£400

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 1/10

12:35-16:00

Nonstop8h 25m

Washington, D.C. Dulles Intl

Wed 8/10

19:59-11:25

1 stop10h 26m

£400

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 5/3

16:25-19:55

Nonstop8h 30m

Washington, D.C. Dulles Intl

Thu 12/3

22:45-10:00

Nonstop7h 15m

£401

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 29/9

17:00-23:07

1 stop11h 07m

Washington, D.C. Reagan-National

Wed 15/10

06:38-21:40

1 stop10h 02m

£405

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 26/9

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Tue 30/9

22:25-10:40

Nonstop7h 15m

£419

Flights are sorted by cheapest return flights first.

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

See travel insights to District of Columbia from

How to get the cheapest flight ticket from London to District of Columbia

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 District of Columbia?

The cheapest month to fly to District of Columbia from London is in February. Flight prices, which tend to average around £456, are often lower during this time because this is during the off-season. If you are unable to visit District of Columbia during the month of February, then departing from London during the month November is also very affordable. Most momondo users find prices during this month for around £485.

What is the cheapest day to depart on your flight to District of Columbia?

Our data shows that Wednesday is the least expensive day to fly to District of Columbia. Tickets to fly out on this day can be as low as £592. Flights from London to District of Columbia on a Sunday will generally be more expensive and average around £666. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to District of Columbia?

In the evening is the cheapest time of day to fly from London to District of Columbia when you can find flight prices for as low as £510. Flying to District of Columbia in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to District of Columbia is in the afternoon when prices are around £624.

What is the cheapest London to District of Columbia flight route?

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London - District of Columbia flight prices

How far in advance should I book a flight to District of Columbia?

You are more likely to see cheaper flights to District of Columbia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around £575 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from London for as low as £538 on momondo.

What cabin class options are available on London to District of Columbia flights?

There are 4 cabin classes available to choose from on London to District of Columbia 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 District of Columbia flights?

You could potentially save up to 18% on your flight if you consider stops on a London to District of Columbia flight.

Cheap London to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to District of Columbia

Best price found

£470

Fastest flight time

8h 05m

Direct flights

Every day

Airports in District of Columbia

1 airport
The best one-way flight to District of Columbia from London in the past 72 hours is £470. The best return flight deal from London to District of Columbia found on momondo in the last 72 hours is £469.
The fastest flight from London to District of Columbia takes 8h 05m
Direct flights go from London to District of Columbia every day.
There is 1 airport near District of Columbia: Washington, D.C. Dulles Intl (IAD)
  • When did momondo last update prices for flights from London to District of Columbia?

    Prices for flights from London to District of Columbia are refreshed on a daily basis.

  • How many operators does momondo search for flights from London to District of Columbia?

  • How old do you have to be to fly from London to District of Columbia?

    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 District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The required travel and health documents for your District of Columbia 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 license and a passport valid for six months after your intended arrival at District of Columbia. 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 District of Columbia?

Best airlines flying from London to District of Columbia

Compare and see reviews for airlines that fly from London to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £186Free CancellationRating
7.9
7,954 reviews
Search Delta flights
PLAYPriceFrom £242Free CancellationRating
7.0
103 reviews
Search PLAY flights
IcelandairPriceFrom £343Free CancellationRating
7.0
544 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom £349Free CancellationRating
7.1
1,975 reviews
Search TAP AIR PORTUGAL flights
JetBluePriceFrom £370Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
United AirlinesPriceFrom £394Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Aer LingusPriceFrom £398Free CancellationRating
7.2
1,270 reviews
Search Aer Lingus flights
FinnairPriceFrom £429Free CancellationRating
7.6
1,323 reviews
Search Finnair flights
LufthansaPriceFrom £432Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £433Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to District of Columbia?

Finding the right flight to District of Columbia from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to District of Columbia quick and easy, saving you time and money.

Can I find flights from London to District of Columbia with flexible booking policies on momondo?

Flights from London to District of Columbia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to District of Columbia?

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 District of Columbia from London.

I’m not ready to book a flight from London to District of Columbia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to District of Columbia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your District of Columbia 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 16/10
Thu 23/10

Find better results for your trip to District of Columbia

Popular Cities in District of Columbia

Popular flights according to clicks in the last 7 days on momondo