What is the cheapest airline that flies from District of Columbia to London Heathrow?

United Airlines, JetBlue, and ITA Airways are the most popular carriers operating from District of Columbia to London Heathrow

What airlines fly to London Heathrow Airport?

British Airways, United Airlines and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from District of Columbia according to our data. British Airways is the first choice among our users, with 52% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 18 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

The number of operators available for flights from District of Columbia to London Heathrow Airport is 18 as of July 2026.

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

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 layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The required travel and health documents for your London Heathrow Airport 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 London Heathrow Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$275 Cheap Flights from District of Columbia to London Heathrow Airport in 2026

Q: How many flights depart from District of Columbia to London Heathrow Airport on average per day?

As of July 2026, 29 flights take off from District of Columbia and land in London Heathrow Airport each day. The most common flight departure time for this route is 10:00PM, with 85% of daily flights taking off in the evening.

Q: How many flights depart from District of Columbia to London Heathrow Airport on average per week?

As of July 2026, 205 flights take off from District of Columbia and land in London Heathrow Airport each week. The most common flight departure day for this route is Wed, with 17% of weekly flights taking off on this day.

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Find the cheapest flights from District of Columbia to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:30 pm - 9:35 pm

IAD

LHR

18h 05m

1 stop

4:30 pm - 3:15 pm

LHR

IAD

27h 45m

1 stop

$620TAP AIR PORTUGAL

Sun, Nov 1 - Sun, Nov 8

11:30 pm - 6:55 pm

IAD

LHR

15h 25m

1 stop

8:15 am - 8:35 pm

LHR

IAD

17h 20m

1 stop

$620TAP AIR PORTUGAL

Wed, Oct 28 - Fri, Dec 4

8:20 pm - 4:25 pm

IAD

LHR

15h 05m

2 stops

6:40 am - 5:00 pm

LHR

IAD

15h 20m

2 stops

$621Scandinavian Airlines

Sat, Sep 19 - Mon, Sep 21

8:20 pm - 1:35 pm

IAD

LHR

12h 15m

1 stop

6:40 am - 5:15 pm

LHR

IAD

15h 35m

1 stop

$622Scandinavian Airlines

Fri, Oct 9 - Mon, Nov 2

8:40 pm - 10:50 am

IAD

LHR

10h 10m

1 stop

12:15 pm - 6:30 pm

LHR

IAD

11h 15m

1 stop

$635Icelandair

Mon, Oct 26 - Sat, Nov 28

4:30 pm - 11:20 am

IAD

LHR

14h 50m

1 stop

1:00 pm - 8:23 pm

LHR

IAD

12h 23m

1 stop

$638Air Canada

Wed, Oct 28 - Fri, Nov 13

4:30 pm - 8:30 am

IAD

LHR

12h 00m

1 stop

1:00 pm - 8:23 pm

LHR

IAD

12h 23m

1 stop

$639Air Canada

Wed, Oct 28 - Tue, Nov 17

8:30 pm - 8:20 pm

IAD

LHR

18h 50m

1 stop

9:25 pm - 10:15 pm

LHR

IAD

29h 50m

1 stop

$642Icelandair

Fri, Oct 2 - Tue, Oct 6

6:30 am - 8:45 pm

DCA

LHR

9h 15m

1 stop

12:20 pm - 10:48 pm

LHR

DCA

15h 28m

1 stop

$677JetBlue

Sat, Oct 10 - Mon, Nov 2

6:30 am - 8:45 pm

DCA

LHR

9h 15m

1 stop

12:20 pm - 10:48 pm

LHR

DCA

15h 28m

1 stop

$677JetBlue

Sat, Oct 10 - Tue, Nov 3

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Scandinavian Airlines flights from District of Columbia to London Heathrow Airport

Our best Scandinavian Airlines deals on District of Columbia to London Heathrow Airport flight tickets

Scandinavian Airlines

Sep 19

IAD8:20 pmWashington, D.C. Dulles Intl

15h 05m

2 stops

LHR4:25 pmLondon Heathrow

Sep 21

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$621

Scandinavian Airlines

Oct 9

IAD8:20 pmWashington, D.C. Dulles Intl

12h 15m

1 stop

LHR1:35 pmLondon Heathrow

Nov 2

LHR6:40 amLondon Heathrow

15h 35m

1 stop

IAD5:15 pmWashington, D.C. Dulles Intl

$622

Scandinavian Airlines

Sep 6

IAD8:20 pmWashington, D.C. Dulles Intl

32h 15m

2 stops

LHR9:35 amLondon Heathrow

Sep 9

LHR6:40 amLondon Heathrow

15h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$628

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

Our best TAP AIR PORTUGAL deals on District of Columbia to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Oct 28

IAD11:30 pmWashington, D.C. Dulles Intl

15h 25m

1 stop

LHR6:55 pmLondon Heathrow

Dec 4

LHR8:15 amLondon Heathrow

17h 20m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$620

TAP AIR PORTUGAL

Oct 17

IAD5:05 pmWashington, D.C. Dulles Intl

23h 55m

1 stop

LHR10:00 pmLondon Heathrow

Nov 18

LHR8:15 amLondon Heathrow

17h 20m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$623

TAP AIR PORTUGAL

Sep 30

IAD10:35 pmWashington, D.C. Dulles Intl

14h 10m

1 stop

LHR5:45 pmLondon Heathrow

Oct 13

LHR6:00 amLondon Heathrow

14h 10m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

$624

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/1

10:30 pm-9:35 pm

1 stop18h 05m

London Heathrow

Sun 11/8

4:30 pm-3:15 pm

1 stop27h 45m

$620

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/28

11:30 pm-6:55 pm

1 stop15h 25m

London Heathrow

Fri 12/4

8:15 am-8:35 pm

1 stop17h 20m

$620

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 9/19

8:20 pm-4:25 pm

2 stops15h 05m

London Heathrow

Mon 9/21

6:40 am-5:00 pm

2 stops15h 20m

$621

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 10/9

8:20 pm-1:35 pm

1 stop12h 15m

London Heathrow

Mon 11/2

6:40 am-5:15 pm

1 stop15h 35m

$622

Quickest round-trip

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 10/26

8:40 pm-10:50 am

1 stop10h 10m

London Heathrow

Sat 11/28

12:15 pm-6:30 pm

1 stop11h 15m

$635

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/28

4:30 pm-11:20 am

1 stop14h 50m

London Heathrow

Fri 11/13

1:00 pm-8:23 pm

1 stop12h 23m

$638

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/28

4:30 pm-8:30 am

1 stop12h 00m

London Heathrow

Tue 11/17

1:00 pm-8:23 pm

1 stop12h 23m

$639

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 10/2

8:30 pm-8:20 pm

1 stop18h 50m

London Heathrow

Tue 10/6

9:25 pm-10:15 pm

1 stop29h 50m

$642

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 10/10

6:30 am-8:45 pm

1 stop9h 15m

London Heathrow

Mon 11/2

12:20 pm-10:48 pm

1 stop15h 28m

$677

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 10/10

6:30 am-8:45 pm

1 stop9h 15m

London Heathrow

Tue 11/3

12:20 pm-10:48 pm

1 stop15h 28m

$677

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Other information

What is the cheapest month to fly to London Heathrow Airport?

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from District of Columbia, with most prices found around $686. If you’re not able to fly to London Heathrow Airport in February, then November is your next best option. Flight prices from District of Columbia to London Heathrow Airport during November average around $699.

What is the cheapest day to depart on your flight to London Heathrow Airport?

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $857. The most expensive day to fly to London Heathrow Airport is Friday, with ticket prices averaging around $962.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from District of Columbia to London Heathrow Airport in the afternoon for as low as $877. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $941.

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

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

How far in advance should I book a flight from District of Columbia to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $855 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from District of Columbia for as low as $780 on momondo.

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

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

You could potentially save up to 3% on your flight if you consider stops on a District of Columbia to London Heathrow Airport flight.

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

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

Best Price Found	$377
Fastest flight time	7h 10m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from District of Columbia in the past 72 hours is $377. The best round-trip flight deal from District of Columbia to London Heathrow Airport found on momondo in the last 72 hours is $804.

The fastest flight from District of Columbia to London Heathrow Airport takes 7h 10m

Direct flights go from District of Columbia to London Heathrow Airport every day.

Search flight deals

Frequently asked questions about flying from District of Columbia to London Heathrow Airport

When did momondo last update prices for flights from District of Columbia to London Heathrow Airport?
Prices for flights from District of Columbia to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from District of Columbia to London Heathrow Airport?
The number of operators available for flights from District of Columbia to London Heathrow Airport is 18 as of July 2026.
How old do you have to be to fly from District of Columbia to London Heathrow Airport?
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 layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow Airport 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 London Heathrow Airport. 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 District of Columbia to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from District of Columbia to London Heathrow Airport is Boeing 777, representing 55.20% of all bookings. The subsequent popular models are Boeing 777-300ER at 14.51%, Boeing 787-9 Dreamliner at 9.04%, and Boeing 777-300 at 4.60%.

Best airlines flying from District of Columbia to London Heathrow Airport

Compare and see reviews for airlines that fly from District of Columbia to London Heathrow Airport with momondo

Airline	Rating	Free Cancellation	Price
Virgin Atlantic	PriceFrom $374	Free Cancellation	Rating 7.5 694 reviews	Search Virgin Atlantic flights
TAP AIR PORTUGAL	PriceFrom $420	Free Cancellation	Rating 7.2 2,352 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $462	Free Cancellation	Rating 7.4 10,053 reviews	Search United Airlines flights
Icelandair	PriceFrom $479	Free Cancellation	Rating 7.0 716 reviews	Search Icelandair flights
British Airways	PriceFrom $529	Free Cancellation	Rating 6.7 8,130 reviews	Search British Airways flights
Delta	PriceFrom $530	Free Cancellation	Rating 7.8 8,494 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 1,910 reviews	Search Scandinavian Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,413 reviews	Search Air Canada flights
Air France	PriceFrom $581	Free Cancellation	Rating 7.5 1,630 reviews	Search Air France flights
Iberia	PriceFrom $584	Free Cancellation	Rating 7.0 3,260 reviews	Search Iberia flights

Hounslow

Gatwick

Milton Keynes

Luton

Hayes

Dover

Croydon

Wembley

Stansted

Stratford-upon-Avon

Kingston upon Thames

Watford

Slough

Harrow

Cobham

Richmond

Uxbridge

Guildford

Worthing

Romford

Why use momondo?

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

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 London from District of Columbia.

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

momondo does allow users to show only those flights to London from District of Columbia which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to London.

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

Of course. momondo tracks the price of District of Columbia to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Flights to London Gatwick Airportfrom $407

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Cheap flights from District of Columbia to London from $275

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to London departing on 9/5. 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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Scandinavian Airlines flights from District of Columbia to London Heathrow Airport

Our best Scandinavian Airlines deals on District of Columbia to London Heathrow Airport flight tickets

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

Our best TAP AIR PORTUGAL deals on District of Columbia to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

See travel insights to London from

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

What is the cheapest month to fly to London Heathrow Airport?

What is the cheapest day to depart on your flight to London Heathrow Airport?

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

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

How far in advance should I book a flight from District of Columbia to London Heathrow Airport?

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

Can stopping save me money on District of Columbia to London Heathrow Airport flights?

What is the cheapest airline that flies from District of Columbia to London Heathrow?

What airlines fly to London Heathrow Airport?

How many flights depart from District of Columbia to London Heathrow Airport on average per day?

How many flights depart from District of Columbia to London Heathrow Airport on average per week?

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from District of Columbia to London Heathrow Airport

Best airlines flying from District of Columbia to London Heathrow Airport

Compare and see reviews for airlines that fly from District of Columbia to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organize 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.

Find better results for your trip to London

Popular cities in the United Kingdom

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

District of Columbia flight routes

According to popular flight searches on momondo this year

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to London

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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