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

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

Tue, Dec 8 - Wed, Dec 16

7:40 pm - 8:55 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

20h 15m2 stops Reykjavik Keflavik Intl Zurich

7:55 am - 6:30 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

15h 35m2 stops Zurich Reykjavik Keflavik Intl

$691Multiple Airlines

Mon, Nov 2 - Wed, Nov 4

5:15 pm - 10:10 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 55m1 stop Dublin

12:10 pm - 7:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 10m1 stop Dublin

$691Aer Lingus

Sat, Jan 23 - Mon, Feb 1

7:40 pm - 1:05 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

12h 25m1 stop Reykjavik Keflavik Intl

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

15h 30m1 stop Reykjavik Keflavik Intl

$691Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

6:15 pm - 8:05 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

9h 50m1 stop Dublin

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

11h 55m1 stop Dublin

$692Aer Lingus

Sun, Oct 11 - Wed, Oct 28

11:20 pm - 11:55 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

31h 35m1 stop Reykjavik Keflavik Intl

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

26h 55m1 stop Reykjavik Keflavik Intl

$693Icelandair

Thu, Jan 14 - Sun, Jan 24

5:25 pm - 12:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 15m1 stop Lisbon Humberto Delgado

12:25 pm - 3:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

31h 50m1 stop Lisbon Humberto Delgado

$693TAP AIR PORTUGAL

Mon, Oct 12 - Thu, Oct 15

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

9h 50m1 stop Dublin

1:25 pm - 7:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

10h 45m1 stop Dublin

$693British Airways

Sun, Jan 10 - Fri, Jan 22

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

18h 50m1 stop Reykjavik Keflavik Intl

8:35 pm - 6:30 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

26h 55m1 stop Reykjavik Keflavik Intl

$694Icelandair

Mon, Jan 4 - Tue, Jan 12

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

7h 15mnonstop

8:25 am - 4:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

12h 55m1 stop Madrid Barajas

$694British Airways

Wed, Jan 13 - Wed, Jan 20

10:30 pm - 3:05 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

11h 35m1 stop Lisbon Humberto Delgado

4:35 pm - 3:15 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

27h 40m1 stop Lisbon Humberto Delgado

$698TAP AIR PORTUGAL

Recent last minute flight deals from District of Columbia to London

Wed, Sep 30 - Tue, Oct 6

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

10h 50m1 stop Dublin

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

11h 55m1 stop Dublin

$693Aer Lingus

Wed, Sep 30 - Wed, Oct 14

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

10h 50m1 stop Dublin

1:25 pm - 7:25 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

11h 00m1 stop Dublin

$693Aer Lingus

Wed, Sep 30 - Wed, Oct 7

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

19h 15m1 stop Montreal Pierre Elliott Trudeau Intl

10:50 am - 7:25 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 35m1 stop Munich Franz Josef Strauss

$693Multiple Airlines

Fri, Oct 2 - Tue, Oct 6

8:55 pm - 6:20 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

16h 25m1 stop Dublin

9:40 am - 3:45 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

11h 05m1 stop Dublin

$697Multiple Airlines

Wed, Sep 30 - Wed, Oct 7

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

12h 40m1 stop Montreal Pierre Elliott Trudeau Intl

9:30 am - 3:40 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

11h 10m1 stop Montreal Pierre Elliott Trudeau Intl

$703Air Canada

Tue, Sep 29 - Thu, Oct 8

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

12h 40m1 stop Montreal Pierre Elliott Trudeau Intl

9:30 am - 12:09 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

31h 39m1 stop Ottawa

$707Air Canada

Tue, Sep 29 - Thu, Oct 8

6:35 pm - 6:55 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 20mnonstop

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

13h 00m1 stop Zurich

$709United Airlines

Tue, Sep 29 - Thu, Oct 8

8:20 pm - 4:25 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 05m1 stop Zurich

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

13h 00m1 stop Zurich

$710SWISS

Tue, Sep 29 - Mon, Oct 5

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

$723SWISS

Sat, Oct 3 - Tue, Oct 27

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

17h 00m1 stop Newark

1:00 pm - 9:27 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

36h 27m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$724United Airlines

Recent direct flight deals from District of Columbia to London

Mon, Nov 23 - Fri, Dec 4

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

$707Finnair

Tue, Dec 1 - Tue, Dec 8

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

$707Finnair

Wed, Nov 11 - Thu, Nov 19

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

$712Virgin Atlantic

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

$716British Airways

Mon, Nov 23 - Fri, Dec 4

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

$716British Airways

Wed, Dec 9 - Wed, Dec 16

9:55 pm - 10:10 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

$728American Airlines

Mon, Nov 30 - Wed, Dec 9

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

$729American Airlines

Wed, Nov 4 - Wed, Nov 11

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

$729Delta

Wed, Nov 4 - Tue, Nov 10

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

$729Delta

Sun, Nov 8 - Sun, Nov 15

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

$758Virgin Atlantic

Useful Info

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, D.C. to London Luton 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

Bedford

Kingston upon Thames

Crawley

Watford

Twickenham

Harrow

St. Albans

Ipswich

Folkestone

Colchester

Horley

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$328 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

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

Cabin class types available on flights to District of Columbia

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