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Cheap flights from London Heathrow Airport to District of Columbia from $357

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 District of Columbia departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to District of Columbia

Cheap round-trip flights

Icelandair Logo
9:25 pm - 7:20 pmLHR-IAD
26h 55m1 stop
Icelandair Logo
8:30 pm - 11:55 amIAD-LHR
10h 25m1 stop
$482Icelandair
Find Deal
Mon, Sep 15 - Mon, Sep 22
TAP AIR PORTUGAL Logo
6:00 am - 3:20 pmLHR-IAD
14h 20m1 stop
TAP AIR PORTUGAL Logo
6:30 pm - 12:40 pmIAD-LHR
14h 10m1 stop
$485TAP AIR PORTUGAL
Find Deal
Thu, Oct 23 - Mon, Oct 27
SWISS Logo
6:00 am - 4:15 pmLHR-IAD
15h 15m1 stop
SWISS Logo
8:45 pm - 1:00 pmIAD-LHR
11h 15m1 stop
$492SWISS
Find Deal
Sun, Oct 5 - Wed, Oct 22
Aer Lingus Logo
1:25 pm - 7:30 pmLHR-IAD
11h 05m1 stop
Aer Lingus Logo
5:05 pm - 8:05 amIAD-LHR
10h 00m1 stop
$506Aer Lingus
Find Deal
Wed, Oct 8 - Sun, Nov 30
TAP AIR PORTUGAL Logo
6:00 am - 3:20 pmLHR-IAD
14h 20m1 stop
TAP AIR PORTUGAL Logo
5:45 pm - 10:20 amIAD-LHR
11h 35m1 stop
$507TAP AIR PORTUGAL
Find Deal
Wed, Oct 15 - Sun, Oct 19
Aer Lingus Logo
8:50 am - 3:50 pmLHR-IAD
12h 00m1 stop
Aer Lingus Logo
8:25 pm - 12:40 pmIAD-LHR
11h 15m1 stop
$514Aer Lingus
Find Deal
Sun, Aug 31 - Sat, Sep 13
JetBlue Logo
8:15 am - 7:20 pmLHR-DCA
16h 05m1 stop
JetBlue Logo
6:19 am - 8:45 pmDCA-LHR
9h 26m1 stop
$549JetBlue
Find Deal
Wed, Sep 10 - Mon, Sep 15
JetBlue Logo
8:15 am - 10:56 pmLHR-DCA
19h 41m1 stop
JetBlue Logo
5:42 pm - 8:45 pmDCA-LHR
22h 03m1 stop
$552JetBlue
Find Deal
Wed, Sep 17 - Mon, Sep 22
Scandinavian Airlines Logo
5:00 pm - 7:59 pmLHR-IAD
31h 59m1 stop
Scandinavian Airlines Logo
10:05 pm - 9:35 pmIAD-LHR
18h 30m2 stops
$565Scandinavian Airlines
Find Deal
Wed, Oct 8 - Mon, Oct 13
Scandinavian Airlines Logo
7:05 am - 5:15 pmLHR-IAD
15h 10m2 stops
Scandinavian Airlines Logo
8:30 pm - 4:25 pmIAD-LHR
14h 55m2 stops
$566Scandinavian Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10

TAP AIR PORTUGAL flights from London Heathrow Airport to District of Columbia

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to District of Columbia flight tickets
TAP AIR PORTUGAL
Oct 23
LHR6:00 amLondon Heathrow
14h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
Oct 27
IAD6:30 pmWashington, D.C. Dulles Intl
14h 10m
1 stop
LHR12:40 pmLondon Heathrow
$485
Find similar
TAP AIR PORTUGAL
Oct 15
LHR6:00 amLondon Heathrow
14h 20m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
Oct 19
IAD5:45 pmWashington, D.C. Dulles Intl
11h 35m
1 stop
LHR10:20 amLondon Heathrow
$507
Find similar
TAP AIR PORTUGAL
Sep 10
LHR6:00 amLondon Heathrow
19h 50m
1 stop
IAD8:50 pmWashington, D.C. Dulles Intl
Sep 30
IAD10:20 pmWashington, D.C. Dulles Intl
14h 25m
1 stop
LHR5:45 pmLondon Heathrow
$515
Find similar

Icelandair flights from London Heathrow Airport to District of Columbia

Our best Icelandair deals on London Heathrow Airport to District of Columbia flight tickets
Icelandair
Sep 15
LHR9:25 pmLondon Heathrow
26h 55m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Sep 22
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
$482
Find similar
Icelandair
Oct 2
LHR1:05 pmLondon Heathrow
11h 15m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl
Oct 7
IAD8:30 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
LHR11:55 amLondon Heathrow
$521
Find similar
Icelandair
Sep 4
LHR1:05 pmLondon Heathrow
14h 05m
1 stop
IAD10:10 pmWashington, D.C. Dulles Intl
Sep 8
IAD8:30 pmWashington, D.C. Dulles Intl
18h 50m
1 stop
LHR8:20 pmLondon Heathrow
$522
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow Airport 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 August 2, 2025.
Use the filters below to find and compare flights from London Heathrow Airport 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

Mon 9/15

9:25 pm-7:20 pm

1 stop26h 55m

Washington, D.C. Dulles Intl

Mon 9/22

8:30 pm-11:55 am

1 stop10h 25m

$482

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 10/23

6:00 am-3:20 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Mon 10/27

6:30 pm-12:40 pm

1 stop14h 10m

$485

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 10/5

6:00 am-4:15 pm

1 stop15h 15m

Washington, D.C. Dulles Intl

Wed 10/22

8:45 pm-1:00 pm

1 stop11h 15m

$492

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 10/8

1:25 pm-7:30 pm

1 stop11h 05m

Washington, D.C. Dulles Intl

Sun 11/30

5:05 pm-8:05 am

1 stop10h 00m

$506

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 10/15

6:00 am-3:20 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Sun 10/19

5:45 pm-10:20 am

1 stop11h 35m

$507

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 8/31

8:50 am-3:50 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Sat 9/13

8:25 pm-12:40 pm

1 stop11h 15m

$514

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 9/10

8:15 am-7:20 pm

1 stop16h 05m

Washington, D.C. Reagan-National

Mon 9/15

6:19 am-8:45 pm

1 stop9h 26m

$549

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 9/17

8:15 am-10:56 pm

1 stop19h 41m

Washington, D.C. Reagan-National

Mon 9/22

5:42 pm-8:45 pm

1 stop22h 03m

$552

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 10/8

5:00 pm-7:59 pm

1 stop31h 59m

Washington, D.C. Dulles Intl

Mon 10/13

10:05 pm-9:35 pm

2 stops18h 30m

$565

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 11/6

7:05 am-5:15 pm

2 stops15h 10m

Washington, D.C. Dulles Intl

Mon 11/10

8:30 pm-4:25 pm

2 stops14h 55m

$566

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 Heathrow Airport 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 Heathrow Airport to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $698. If you don’t want to visit District of Columbia in February, then you should wait until March to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $711.

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 $826. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $939.

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

Flying to District of Columbia from London Heathrow Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $749 when looking at flights departing in the evening. Flights to District of Columbia are more costly in the morning, with an average ticket price of $880. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

Fly from London Heathrow to Washington, D.C. Dulles Intl for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $861 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 Heathrow Airport for as low as $750 on momondo.

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

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

You could potentially save up to 44% on your flight if you consider stops on a London Heathrow Airport to District of Columbia flight.

Cheap London Heathrow Airport to District of Columbia flight deals and tips

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

Best Price Found

$357

Fastest flight time

11h 05m

Direct flights

Every day

Airports in District of Columbia

2 airports
The best one-way flight to District of Columbia from London Heathrow Airport in the past 72 hours is $357. The best round-trip flight deal from London Heathrow Airport to District of Columbia found on momondo in the last 72 hours is $482.
The fastest flight from London Heathrow Airport to District of Columbia takes 11h 05m
Direct flights go from London Heathrow Airport to District of Columbia every day.
There are 2 airports near District of Columbia: Washington, D.C. Reagan-National (DCA), Washington, D.C. Dulles Intl (IAD)
Search flight deals

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport 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 Heathrow Airport to District of Columbia?

Best airlines flying from London Heathrow Airport to District of Columbia

Compare and see reviews for airlines that fly from London Heathrow Airport to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $390Free CancellationRating
7.3
1,457 reviews
Search Scandinavian Airlines flights
PLAYPriceFrom $392Free CancellationRating
7.0
102 reviews
Search PLAY flights
Austrian AirlinesPriceFrom $431Free CancellationRating
7.6
823 reviews
Search Austrian Airlines flights
TAP AIR PORTUGALPriceFrom $476Free CancellationRating
7.1
1,936 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $510Free CancellationRating
7.0
520 reviews
Search Icelandair flights
British AirwaysPriceFrom $595Free CancellationRating
6.6
7,224 reviews
Search British Airways flights
American AirlinesPriceFrom $619Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Aer LingusPriceFrom $652Free CancellationRating
7.1
1,193 reviews
Search Aer Lingus flights
DeltaPriceFrom $652Free CancellationRating
8.0
7,983 reviews
Search Delta flights
United AirlinesPriceFrom $663Free CancellationRating
7.4
8,904 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to District of Columbia for you.

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

Yes. momondo enables you to select and highlight flights to District of Columbia from London with this policy.

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

momondo provides multiple filters to help you find the best flight to District of Columbia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

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