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.

$272 CHEAP FLIGHTS from District of Columbia to London

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Flight Deals

Cheap Flights from District of Columbia to London

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from District of Columbia to London

Fri, Jan 15 - Wed, Jan 20

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

$615Icelandair

Tue, Oct 20 - Tue, Oct 27

9:45 am - 11:40 amIAD Washington, D.C. Dulles Intl-STN London Stansted

20h 55m2 stops Montreal Pierre Elliott Trudeau Intl Madrid Barajas

10:25 am - 6:00 pmSTN London Stansted-IAD Washington, D.C. Dulles Intl

35h 35m2 stops Madrid Barajas Zurich

$633Multiple Airlines

Mon, Oct 12 - Sun, Oct 18

4:00 pm - 11:40 amIAD Washington, D.C. Dulles Intl-LGW London Gatwick

14h 40m2 stops Toronto Pearson Intl Madrid Barajas

4:30 pm - 4:05 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

28h 35m2 stops Madrid Barajas Frankfurt am Main

$633Multiple Airlines

Tue, Oct 20 - Tue, Oct 27

9:05 pm - 12:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 35m1 stop Dublin

12:10 pm - 8:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 10m1 stop Dublin

$673Aer Lingus

Mon, Nov 30 - Thu, Dec 10

8:10 pm - 4:20 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 10m1 stop Zurich

6:00 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

16h 00m1 stop Zurich

$683SWISS

Wed, Oct 14 - Thu, Dec 10

8:20 pm - 5:50 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

16h 30m1 stop Zurich

6:00 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

16h 00m1 stop Zurich

$683SWISS

Wed, Nov 18 - Wed, Nov 25

8:50 pm - 1:25 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 35m1 stop Dublin

9:50 am - 7:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 30m1 stop Dublin

$690Aer Lingus

Mon, Oct 5 - Wed, Oct 14

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

18h 50m1 stop Reykjavik Keflavik Intl

9:25 pm - 7:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

$690Icelandair

Mon, Oct 5 - Thu, Oct 15

12:50 pm - 6:30 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

12h 40m1 stop Ottawa

2:05 pm - 9:50 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

12h 45m1 stop Montreal Pierre Elliott Trudeau Intl

$691Air Canada

Tue, Sep 29 - Wed, Mar 3

4:20 pm - 10:00 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

12h 40m1 stop Montreal Pierre Elliott Trudeau Intl

1:00 pm - 9:53 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

13h 53m1 stop Montreal Pierre Elliott Trudeau Intl

$707Air Canada

Recent last minute flight deals from District of Columbia to London

Tue, Sep 22 - Tue, Sep 29

8:20 pm - 5:50 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

16h 30m1 stop Zurich

9:25 am - 4:45 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

12h 20m1 stop Zurich

$683SWISS

Sun, Sep 20 - Tue, Sep 29

4:00 pm - 4:50 pmIAD Washington, D.C. Dulles Intl-STN London Stansted

19h 50m2 stops Toronto Pearson Intl Madrid Barajas

3:55 pm - 1:30 pmSTN London Stansted-IAD Washington, D.C. Dulles Intl

26h 35m2 stops Madrid Barajas Brussels Bruxelles-National

$683Multiple Airlines

Mon, Sep 21 - Wed, Sep 30

8:20 pm - 7:20 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 00m1 stop Zurich

8:40 am - 4:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 05m1 stop Zurich

$683SWISS

Sun, Sep 20 - Tue, Sep 29

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

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$686Air France

Sun, Sep 20 - Tue, Sep 29

5:15 pm - 8:55 amIAD Washington, D.C. Dulles Intl-LGW London Gatwick

10h 40m1 stop Dublin

8:50 am - 3:45 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

11h 55m1 stop Dublin

$689Multiple Airlines

Sun, Sep 20 - Tue, Sep 29

5:15 pm - 9:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 50m1 stop Dublin

9:50 am - 3:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

10h 55m1 stop Dublin

$695Aer Lingus

Sun, Sep 20 - Tue, Sep 29

5:15 pm - 8:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

9h 50m1 stop Dublin

12:00 pm - 7:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 35m1 stop Dublin

$696Aer Lingus

Wed, Sep 23 - Tue, Sep 29

5:15 pm - 8:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

9h 50m1 stop Dublin

9:50 am - 3:45 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

10h 55m1 stop Dublin

$696British Airways

Mon, Sep 21 - Thu, Oct 8

5:45 pm - 6:20 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 35mnonstop

10:50 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Madrid Barajas

$703British Airways

Mon, Sep 21 - Tue, Sep 29

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

7h 35mnonstop

11:30 am - 7:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 05m1 stop Paris Charles de Gaulle

$718Air France

Recent direct flight deals from District of Columbia to London

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

$696Iberia

Mon, Oct 5 - Thu, Oct 15

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

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$704KLM

Tue, Oct 6 - Thu, Oct 15

10:25 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 25mnonstop

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

8h 15mnonstop

$704British Airways

Mon, Nov 16 - Fri, Nov 27

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

7h 10mnonstop

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

8h 25mnonstop

$709Finnair

Tue, Dec 8 - Wed, Dec 16

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

$709Finnair

Tue, Oct 27 - Tue, Nov 3

7:05 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

$713British Airways

Sun, Oct 11 - Tue, Oct 20

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

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$714Virgin Atlantic

Wed, Oct 14 - Wed, Oct 21

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

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$715Virgin Atlantic

Mon, Nov 16 - Wed, Dec 2

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

$716Iberia

Sun, Sep 27 - Tue, Oct 13

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

7h 35mnonstop

3:50 pm - 7:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 25mnonstop

$729KLM

Useful Info

Low season	February
High season	December
Cheapest flight	$272

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

Most popular time to fly with an average 21% increase in price.

Flight from Washington Dulles Airport to London Gatwick 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

Slough

Hayes

Richmond

Wembley

Luton

Eastbourne

Ilford

Crawley

Guildford

Colchester

Ipswich

Bedford

Kingston upon Thames

Watford

Newbury

Twickenham

Harrow

St. Albans

Maidenhead

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$272 Find Cheap Flights from District of Columbia to London - Compare and Save

Cheap Flights from District of Columbia to London

Recent round-trip flight deals from District of Columbia to London

Recent one-way flight deals from District of Columbia to London

Recent last minute flight deals from District of Columbia to London

Recent direct flight deals from District of Columbia to London

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

FAQs for booking flights from District of Columbia to London

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More options for your flight to London

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Cabin class types available on flights to District of Columbia

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