How does KAYAK find such low prices on flights from District of Columbia to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$328 CHEAP FLIGHTS from District of Columbia to London

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Cheap Flights from District of Columbia to London

Cheap flights from District of Columbia to London with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Direct

Thu, Jan 7 - Wed, Jan 13

8:30 pm - 5:25 pmIAD Washington, D.C. Dulles Intl-STN London Stansted

15h 55m1 stop Kastrup Copenhagen

8:15 am - 5:15 pmSTN London Stansted-IAD Washington, D.C. Dulles Intl

14h 00m1 stop Kastrup Copenhagen

$680Multiple Airlines

Mon, Dec 28 - Thu, Jan 7

8:30 pm - 9:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

20h 10m1 stop Kastrup Copenhagen

10:20 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Kastrup Copenhagen

$680Scandinavian Airlines

Mon, Feb 22 - Mon, Mar 1

8:30 pm - 2:05 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

12h 35m1 stop Reykjavik Keflavik Intl

8:00 am - 6:30 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

15h 30m1 stop Reykjavik Keflavik Intl

$680Multiple Airlines

Thu, Dec 3 - Fri, Dec 11

8:30 pm - 6:50 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

17h 20m2 stops Kastrup Copenhagen Oslo Gardermoen

1:55 pm - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

33h 55m2 stops Stockholm Arlanda Kastrup Copenhagen

$680Scandinavian Airlines

Tue, Nov 10 - Tue, Nov 17

5:25 pm - 5:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

19h 05m1 stop Lisbon Humberto Delgado

6:00 am - 2:40 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 40m1 stop Lisbon Humberto Delgado

$695TAP AIR PORTUGAL

Sat, Nov 7 - Thu, Nov 26

5:25 pm - 10:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

24h 15m1 stop Lisbon Humberto Delgado

6:00 am - 3:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 15m1 stop Lisbon Humberto Delgado

$695TAP AIR PORTUGAL

Tue, Mar 16 - Tue, Mar 23

8:40 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

8:35 pm - 7:30 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

$699Icelandair

Wed, Dec 9 - Wed, Dec 16

7:40 pm - 7:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 50m1 stop Reykjavik Keflavik Intl

12:15 pm - 6:30 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 15m1 stop Reykjavik Keflavik Intl

$706Icelandair

Wed, Jan 6 - Wed, Jan 13

6:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mnonstop

4:25 pm - 7:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$714British Airways

Thu, Jan 28 - Tue, Feb 2

9:45 pm - 10:00 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mnonstop

12:15 pm - 3:40 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$766British Airways

Mon, Oct 12 - Mon, Oct 19

6:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

24h 45m2 stops Amsterdam Schiphol Madrid Barajas

12:50 pm - 3:35 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

31h 45m3 stops Barcelona-El Prat Madrid Barajas Amsterdam Schiphol

$688Multiple Airlines

Mon, Oct 12 - Mon, Oct 19

6:10 pm - 11:55 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

24h 45m2 stops Amsterdam Schiphol Madrid Barajas

12:50 pm - 3:35 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

31h 45m3 stops Barcelona-El Prat Madrid Barajas Amsterdam Schiphol

$693Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

8:25 pm - 5:15 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 50m1 stop Madrid Barajas

9:15 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 35m1 stop Madrid Barajas

$701Iberia

Tue, Oct 13 - Tue, Oct 20

10:35 pm - 8:25 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

16h 50m2 stops Lisbon Humberto Delgado Porto

4:25 pm - 3:10 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

27h 45m1 stop Lisbon Humberto Delgado

$707TAP AIR PORTUGAL

Sun, Oct 11 - Wed, Oct 21

10:35 pm - 9:45 amIAD Washington, D.C. Dulles Intl-LGW London Gatwick

30h 10m1 stop Lisbon Humberto Delgado

4:25 pm - 3:10 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

27h 45m1 stop Lisbon Humberto Delgado

$752TAP AIR PORTUGAL

Thu, Oct 15 - Tue, Oct 20

8:35 pm - 5:15 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 40m1 stop Madrid Barajas

9:15 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 35m1 stop Madrid Barajas

$766Iberia

Mon, Oct 12 - Mon, Oct 19

10:05 pm - 10:40 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

8:40 am - 3:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Amsterdam Schiphol

$770KLM

Mon, Oct 12 - Mon, Oct 19

6:32 pm - 10:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 48m1 stop New York John F Kennedy Intl

8:40 am - 3:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Amsterdam Schiphol

$775KLM

Thu, Oct 15 - Fri, Oct 23

8:20 pm - 4:00 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 40m1 stop Kastrup Copenhagen

7:05 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 55m2 stops Oslo Gardermoen Kastrup Copenhagen

$811Scandinavian Airlines

Mon, Oct 12 - Fri, Oct 23

8:20 pm - 6:30 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

17h 10m1 stop Kastrup Copenhagen

7:05 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 55m2 stops Oslo Gardermoen Kastrup Copenhagen

$822Scandinavian Airlines

Wed, Jan 6 - Wed, Jan 13

6:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mnonstop

4:25 pm - 7:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$714British Airways

Thu, Jan 28 - Tue, Feb 2

9:45 pm - 10:00 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mnonstop

12:15 pm - 3:40 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$766British Airways

Tue, Dec 1 - Mon, Dec 7

6:55 pm - 7:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

1:20 pm - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mnonstop

$777KLM

Tue, Dec 1 - Sun, Dec 6

6:55 pm - 7:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

1:05 pm - 4:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mnonstop

$777KLM

Sun, Jan 17 - Sun, Jan 24

9:45 pm - 10:00 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mnonstop

4:25 pm - 7:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$809Iberia

Wed, Feb 3 - Wed, Feb 10

6:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mnonstop

4:25 pm - 7:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$809Multiple Airlines

Mon, Mar 1 - Sun, Mar 7

9:45 pm - 10:00 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 15mnonstop

4:25 pm - 7:55 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 30mnonstop

$809Multiple Airlines

Sun, Mar 28 - Fri, Apr 2

5:40 pm - 6:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 40mnonstop

5:05 pm - 8:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 15mnonstop

$813Iberia

Thu, Nov 12 - Mon, Nov 16

8:45 pm - 9:10 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

1:20 pm - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mnonstop

$827Air France

Sat, Nov 7 - Sat, Nov 14

6:55 pm - 7:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

1:05 pm - 4:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mnonstop

$827Air France

Low season	February
High season	December
Cheapest flight	$328

Best time to beat the crowds with an average 26% drop in price.

Most popular time to fly with an average 20% increase in price.

Flight from Washington Dulles Airport to London Stansted Airport

DeeFlew with United Airlines-Feb 2025

For me the best route to LHR is the late night departure on UAL. The flight is often roughly 6.5 hours so I skip dinner, use an eye mask and earplugs and try to sleep.

EllenFlew with British Airways-Oct 2024

Do not check your bag if at all possible, especially if you have a connecting flight. Your bag will not make it.

CraigFlew with United Airlines-Jun 2024

Get to beginning of boarding group early. Bring as little on board as possible due to small overhead bin space.

How does KAYAK find such low prices on flights from District of Columbia to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hounslow

Hayes

Slough

Richmond

Wembley

Luton

Eastbourne

Ilford

Guildford

Kingston upon Thames

Bedford

Crawley

Watford

Harrow

Twickenham

Ipswich

St. Albans

Folkestone

Colchester

Woodbridge

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Car rentals in London

$328 Find Cheap Flights from District of Columbia to London - Compare and Save

Cheap Flights from District of Columbia to London

Cheap flights from District of Columbia to London with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Good to know

Low season

High season

Cheapest flight

Flights from District of Columbia to London: the best tips from KAYAK users

FAQs for booking flights from District of Columbia to London

Traveling to a place near London?

More options for your flight to London

Complete your trip to London with a hotel stay or car rental

Cabin class types available on flights to District of Columbia

Find direct flights for London

Flights from domestic origins to London

Choose which airport to fly into in London

Flights to other popular destinations