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Cheap flights from London to District of Columbia from $508

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from London to District of Columbia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Austrian Airlines Logo
6:00 am - 2:40 pm
LHR
-
IAD
13h 40m
1 stop
Austrian Airlines Logo
6:20 pm - 6:40 am
IAD
-
LHR
7h 20mnonstop
$543Austrian Airlines
Sun, Feb 22 - Thu, Mar 5
TAP AIR PORTUGAL Logo
10:40 am - 9:00 pm
LGW
-
IAD
15h 20m
1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 9:50 am
IAD
-
LGW
11h 20m
1 stop
$543TAP AIR PORTUGAL
Fri, Feb 27 - Tue, Mar 3
Icelandair Logo
3:40 pm - 10:15 pm
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
11:20 pm - 2:40 pm
IAD
-
LGW
10h 20m
1 stop
$544Icelandair
Fri, May 22 - Sun, May 31
Austrian Airlines Logo
9:05 am - 2:40 pm
LHR
-
IAD
34h 35m
1 stop
Austrian Airlines Logo
10:15 pm - 10:50 am
IAD
-
LHR
7h 35mnonstop
$544Austrian Airlines
Wed, Feb 25 - Tue, Mar 3
Icelandair Logo
11:55 am - 6:30 pm
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
7:40 pm - 10:55 am
IAD
-
LGW
10h 15m
1 stop
$545Icelandair
Wed, Feb 18 - Sat, Feb 28
Austrian Airlines Logo
2:50 pm - 2:40 pm
LHR
-
IAD
28h 50m
1 stop
Austrian Airlines Logo
5:17 pm - 11:15 am
IAD
-
LHR
12h 58m
1 stop
$545Austrian Airlines
Wed, Feb 18 - Sat, Feb 28
United Airlines Logo
7:30 am - 2:35 pm
LHR
-
IAD
12h 05m
1 stop
United Airlines Logo
5:40 pm - 8:25 am
IAD
-
LHR
9h 45m
1 stop
$548United Airlines
Sat, Feb 21 - Tue, Mar 3
British Airways Logo
2:30 pm - 8:59 pm
LGW
-
DCA
35h 29m
1 stop
British Airways Logo
11:18 am - 10:40 am
DCA
-
LGW
18h 22m
1 stop
$616British Airways
Tue, May 12 - Tue, May 19
American Airlines Logo
12:30 pm - 9:30 pm
LGW
-
DCA
14h 00m
1 stop
American Airlines Logo
8:10 am - 9:00 am
DCA
-
LGW
19h 50m
1 stop
$619American Airlines
Thu, Feb 19 - Thu, Feb 26
British Airways Logo
7:50 am - 9:30 pm
LCY
-
DCA
18h 40m
2 stops
British Airways Logo
9:59 am - 8:50 am
DCA
-
LCY
17h 51m
2 stops
$621British Airways
Wed, Feb 18 - Mon, Feb 23

United Airlines flights from London to District of Columbia

Our best United Airlines deals on London to District of Columbia flight tickets
United Airlines
Feb 21
LHR7:30 amLondon Heathrow
12h 05m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Mar 4
IAD6:00 amWashington, D.C. Dulles Intl
9h 35m
1 stop
LHR8:35 pmLondon Heathrow
$548
United Airlines
May 9
LHR8:45 amLondon Heathrow
13h 00m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
May 24
IAD6:00 amWashington, D.C. Dulles Intl
9h 40m
1 stop
LHR8:40 pmLondon Heathrow
$568
United Airlines
May 10
LHR7:25 amLondon Heathrow
12h 35m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
May 24
IAD6:30 pmWashington, D.C. Dulles Intl
7h 25m
LHR6:55 amLondon Heathrow
$573

Lufthansa flights from London to District of Columbia

Our best Lufthansa deals on London to District of Columbia flight tickets
Lufthansa
Feb 10
LHR7:40 amLondon Heathrow
12h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 17
IAD5:40 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
LHR5:05 pmLondon Heathrow
$552
Lufthansa
Feb 10
LHR7:40 amLondon Heathrow
12h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 18
IAD6:00 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LHR9:45 amLondon Heathrow
$554
Lufthansa
Feb 3
LHR4:20 pmLondon Heathrow
8h 55m
IAD8:15 pmWashington, D.C. Dulles Intl
Feb 17
IAD6:20 pmWashington, D.C. Dulles Intl
7h 20m
LHR6:40 amLondon Heathrow
$564

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated January 29, 2026.
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

Sun 2/22

6:00 am-2:40 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Thu 3/5

6:20 pm-6:40 am

Nonstop7h 20m

$543

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 2/27

10:40 am-9:00 pm

1 stop15h 20m

Washington, D.C. Dulles Intl

Tue 3/3

5:30 pm-9:50 am

1 stop11h 20m

$543

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 5/22

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 5/31

11:20 pm-2:40 pm

1 stop10h 20m

$544

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 2/25

9:05 am-2:40 pm

1 stop34h 35m

Washington, D.C. Dulles Intl

Tue 3/3

10:15 pm-10:50 am

Nonstop7h 35m

$544

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 2/18

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 2/28

7:40 pm-10:55 am

1 stop10h 15m

$545

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 2/18

2:50 pm-2:40 pm

1 stop28h 50m

Washington, D.C. Dulles Intl

Sat 2/28

5:17 pm-11:15 am

1 stop12h 58m

$545

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 2/21

7:30 am-2:35 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Tue 3/3

5:40 pm-8:25 am

1 stop9h 45m

$548

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 5/12

2:30 pm-8:59 pm

1 stop35h 29m

Washington, D.C. Reagan-National

Tue 5/19

11:18 am-10:40 am

1 stop18h 22m

$616

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 2/19

12:30 pm-9:30 pm

1 stop14h 00m

Washington, D.C. Reagan-National

Thu 2/26

8:10 am-9:00 am

1 stop19h 50m

$619

LondonWashington, D.C.

LCY - DCA

LCYDCA

London City

Wed 2/18

7:50 am-9:30 pm

2 stops18h 40m

Washington, D.C. Reagan-National

Mon 2/23

9:59 am-8:50 am

2 stops17h 51m

$621

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

In general, February is the cheapest month to fly from London to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $615. If you don’t want to visit District of Columbia in February, then you should wait until January to fly from London, when ticket prices are also cheap, with an average price of $636.

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

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $744. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from London because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $904.

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

Flying to District of Columbia from London in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $818 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $851. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $748 when searching weeks out. 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 $716 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 25% 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

$673

Fastest flight time

8h 00m

Direct flights

Every day

Airports in District of Columbia

2 airports
The best one-way flight to District of Columbia from London in the past 72 hours is $673. The best round-trip flight deal from London to District of Columbia found on momondo in the last 72 hours is $572.
The fastest flight from London to District of Columbia takes 8h 00m
Direct flights go from London to District of Columbia every day.
There are 2 airports in District of Columbia. From London there are direct flights to Washington, D.C. Dulles Intl (IAD).
Search flight deals

  • When did momondo last update prices for flights from London to District of Columbia?

    Prices for flights from London to District of Columbia refresh daily.

  • 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
Scandinavian AirlinesPriceFrom $271Free CancellationRating
7.3
1,674 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $320Free CancellationRating
7.9
8,127 reviews
Search Delta flights
Austrian AirlinesPriceFrom $431Free CancellationRating
7.5
895 reviews
Search Austrian Airlines flights
IcelandairPriceFrom $466Free CancellationRating
7.1
606 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $473Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $559Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
LufthansaPriceFrom $563Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
British AirwaysPriceFrom $572Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to District of Columbia. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for London to District of Columbia flights to just show those with flexible booking policies.

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

Once you have performed a search for London to District of Columbia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to District of Columbia, momondo offers a useful price alert feature which will track prices for flights to District of Columbia from London and alert you when they change.

An easier way to manage your District of Columbia trip

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Find better results for your trip to District of Columbia

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