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.

$319 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, Jan 5 - Tue, Jan 12

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

$672Icelandair

Wed, Dec 2 - Sun, Dec 6

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

$672Icelandair

Thu, Jan 21 - Wed, Jan 27

10:16 pm - 10:00 amIAD Washington, D.C. Dulles Intl-LGW London Gatwick

30h 44m1 stop Orlando

9:45 am - 12:19 amLGW London Gatwick-IAD Washington, D.C. Dulles Intl

19h 34m2 stops Orlando Atlanta Hartsfield-Jackson

$672Multiple Airlines

Tue, Nov 24 - Tue, Dec 1

7:40 pm - 9:50 pmIAD Washington, D.C. Dulles Intl-STN London Stansted

21h 10m2 stops Reykjavik Keflavik Intl Dublin

7:15 am - 6:30 pmSTN London Stansted-IAD Washington, D.C. Dulles Intl

16h 15m2 stops Dublin Reykjavik Keflavik Intl

$672Multiple Airlines

Mon, Nov 30 - Thu, Dec 3

8:30 pm - 5:00 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

39h 30m2 stops Kastrup Copenhagen Stockholm Arlanda

6:40 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Kastrup Copenhagen

$682Scandinavian Airlines

Wed, Apr 21 - Sun, Apr 25

10:05 pm - 6:50 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 45m1 stop Lisbon Humberto Delgado

6:00 am - 3:10 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 10m1 stop Lisbon Humberto Delgado

$684TAP AIR PORTUGAL

Wed, Feb 17 - Thu, Feb 25

8:30 pm - 4:25 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 55m2 stops Kastrup Copenhagen Oslo Gardermoen

6:40 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Kastrup Copenhagen

$686Scandinavian Airlines

Sat, Apr 24 - Mon, Apr 26

9:35 pm - 5:45 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

15h 10m1 stop Lisbon Humberto Delgado

11:20 am - 8:35 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

14h 15m1 stop Lisbon Humberto Delgado

$694TAP AIR PORTUGAL

Tue, Nov 24 - Sun, Nov 29

4:05 pm - 7:10 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

10h 05m1 stop Montreal Pierre Elliott Trudeau Intl

9:00 am - 12:19 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

32h 19m2 stops Halifax Intl Ottawa

$699Air Canada

Mon, Mar 15 - Wed, Mar 17

7:05 pm - 6:15 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

7h 10mnonstop

6:15 am - 5:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 05m1 stop Madrid Barajas

$740American Airlines

Recent last minute flight deals from District of Columbia to London

Tue, Nov 10 - Tue, Nov 17

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

24h 15m1 stop Lisbon Humberto Delgado

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

13h 40m1 stop Lisbon Humberto Delgado

$688TAP AIR PORTUGAL

Tue, Nov 10 - Tue, Nov 17

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

24h 15m1 stop Lisbon Humberto Delgado

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

31h 00m1 stop Lisbon Humberto Delgado

$694TAP AIR PORTUGAL

Thu, Nov 12 - Mon, Nov 23

5:25 pm - 3:10 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

16h 45m2 stops Lisbon Humberto Delgado Barcelona-El Prat

2:35 pm - 2:40 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

29h 05m2 stops Barcelona-El Prat Lisbon Humberto Delgado

$698Multiple Airlines

Thu, Nov 12 - Wed, Nov 25

5:25 pm - 7:45 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

21h 20m2 stops Lisbon Humberto Delgado Milan Malpensa

6:10 am - 8:30 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

19h 20m2 stops Madrid Barajas Lisbon Humberto Delgado

$708Multiple Airlines

Wed, Nov 11 - Tue, Dec 1

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

17h 00m1 stop Kastrup Copenhagen

6:40 pm - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

27h 35m1 stop Kastrup Copenhagen

$765Scandinavian Airlines

Thu, Nov 12 - Sat, Nov 21

8:30 pm - 5:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

16h 10m1 stop Kastrup Copenhagen

6:40 am - 6:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

17h 10m2 stops Oslo Gardermoen Kastrup Copenhagen

$766Scandinavian Airlines

Wed, Nov 11 - Mon, Nov 16

8:55 am - 6:55 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

17h 00m1 stop Boston Logan Intl

12:20 pm - 10:15 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

14h 55m1 stop New York John F Kennedy Intl

$776JetBlue

Tue, Nov 10 - Fri, Nov 13

6:15 am - 9:40 pmDCA Washington, D.C. Reagan-National-LHR London Heathrow

10h 25m1 stop New York John F Kennedy Intl

8:05 am - 10:15 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

19h 10m1 stop New York John F Kennedy Intl

$776JetBlue

Wed, Nov 11 - Sun, Nov 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

$800Icelandair

Tue, Nov 10 - Sun, Nov 22

7:40 pm - 10:50 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

10h 10m1 stop Reykjavik Keflavik Intl

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

26h 55m1 stop Reykjavik Keflavik Intl

$830Icelandair

Recent direct flight deals from District of Columbia to London

Wed, Mar 3 - Wed, Mar 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

$796Virgin Atlantic

Wed, Feb 24 - Mon, Mar 1

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

$822British Airways

Thu, Feb 11 - Mon, Feb 15

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

$825British Airways

Mon, Mar 1 - Mon, Mar 15

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

7h 25mnonstop

1:20 pm - 6:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

8h 40mnonstop

$839Virgin Atlantic

Sun, Dec 6 - Tue, Dec 15

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

$878Finnair

Sun, Dec 6 - Tue, Dec 15

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

$880Finnair

Wed, Feb 3 - Tue, Feb 9

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

$881Iberia

Tue, Feb 2 - Tue, Feb 9

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

$881Iberia

Tue, Mar 23 - Wed, Mar 31

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

7h 15mnonstop

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

8h 15mnonstop

$904Multiple Airlines

Wed, Feb 3 - Thu, Feb 11

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

$904Multiple Airlines

Useful Info

Low season	February
High season	March
Cheapest flight	$319

Best time to beat the crowds with an average 28% drop in price.

Most popular time to fly and prices are also 18% lower on average.

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

Kingston upon Thames

Guildford

Crawley

Bedford

Watford

Harrow

Ipswich

Folkestone

St. Albans

Colchester

Woodbridge

Horley

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$319 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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