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.

$320 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, Nov 6 - Sun, Nov 15

10:55 pm - 8:50 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

16h 55m2 stops Munich Franz Josef Strauss Madrid Barajas

9:30 pm - 5:00 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

24h 30m2 stops Madrid Barajas Zurich

$668Multiple Airlines

Sun, Feb 7 - Tue, Feb 16

7:40 pm - 3:05 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

14h 25m1 stop Reykjavik Keflavik Intl

7:05 am - 6:30 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

16h 25m1 stop Reykjavik Keflavik Intl

$668Multiple Airlines

Thu, Jan 14 - Thu, Jan 21

5:50 pm - 12:05 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

13h 15m1 stop Madrid Barajas

6:15 am - 4:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 05m1 stop Madrid Barajas

$669Iberia

Thu, Jan 14 - Thu, Jan 21

5:50 pm - 12:05 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

13h 15m1 stop Madrid Barajas

6:15 am - 4:20 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

15h 05m1 stop Madrid Barajas

$669Iberia

Fri, Apr 16 - Sat, May 1

8:20 pm - 9:35 amIAD Washington, D.C. Dulles Intl-LHR London Heathrow

32h 15m2 stops Kastrup Copenhagen Oslo Gardermoen

5:00 pm - 4:50 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

28h 50m1 stop Kastrup Copenhagen

$671Scandinavian Airlines

Mon, Jan 11 - Thu, Jan 21

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

14h 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

$671TAP AIR PORTUGAL

Sun, Nov 8 - Mon, Nov 16

10:30 pm - 3:45 pmIAD Washington, D.C. Dulles Intl-LGW London Gatwick

12h 15m1 stop Lisbon Humberto Delgado

4:35 pm - 2:40 pmLGW London Gatwick-IAD Washington, D.C. Dulles Intl

27h 05m1 stop Lisbon Humberto Delgado

$671TAP AIR PORTUGAL

Thu, Dec 3 - Sun, Dec 6

8:30 pm - 2:35 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

37h 05m2 stops Kastrup Copenhagen Oslo Gardermoen

9:55 am - 5:15 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

36h 20m2 stops Stockholm Arlanda Kastrup Copenhagen

$674Scandinavian Airlines

Thu, Jan 21 - Mon, Jan 25

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

10h 10m1 stop Reykjavik Keflavik Intl

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

11h 15m1 stop Reykjavik Keflavik Intl

$700Icelandair

Sun, Nov 15 - 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

$702Icelandair

Recent last minute flight deals from District of Columbia to London

Mon, Oct 26 - Thu, Nov 12

6:25 pm - 12:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 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

$735TAP AIR PORTUGAL

Mon, Oct 26 - Fri, Nov 13

6:25 pm - 12:40 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

14h 15m1 stop Lisbon Humberto Delgado

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

19h 30m1 stop Lisbon Humberto Delgado

$736TAP AIR PORTUGAL

Thu, Oct 29 - Thu, Nov 5

8:40 pm - 11:05 pmIAD Washington, D.C. Dulles Intl-LTN London Luton

22h 25m2 stops Reykjavik Keflavik Intl Dublin

6:15 am - 6:30 pmLTN London Luton-IAD Washington, D.C. Dulles Intl

17h 15m2 stops Dublin Reykjavik Keflavik Intl

$737Multiple Airlines

Thu, Oct 29 - Thu, Nov 5

8:40 pm - 5:00 pmIAD Washington, D.C. Dulles Intl-STN London Stansted

16h 20m2 stops Reykjavik Keflavik Intl Dublin

8:45 am - 6:30 pmSTN London Stansted-IAD Washington, D.C. Dulles Intl

14h 45m2 stops Dublin Reykjavik Keflavik Intl

$767Multiple Airlines

Mon, Oct 26 - Tue, Nov 3

2:06 pm - 6:55 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

12h 49m1 stop Boston Logan Intl

9:20 am - 6:00 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

13h 40m1 stop Boston Logan Intl

$828JetBlue

Tue, Oct 27 - Sat, Oct 31

12:00 pm - 6:55 amDCA Washington, D.C. Reagan-National-LHR London Heathrow

14h 55m1 stop Boston Logan Intl

9:20 am - 7:01 pmLHR London Heathrow-DCA Washington, D.C. Reagan-National

13h 41m1 stop Boston Logan Intl

$828JetBlue

Tue, Oct 27 - Tue, Nov 10

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

10h 10m1 stop Reykjavik Keflavik Intl

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

11h 15m1 stop Reykjavik Keflavik Intl

$850Icelandair

Tue, Oct 27 - Tue, Nov 10

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

10h 10m1 stop Reykjavik Keflavik Intl

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

11h 15m1 stop Reykjavik Keflavik Intl

$853Icelandair

Wed, Oct 28 - Tue, Nov 10

9:10 pm - 7:15 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

18h 05m1 stop Zurich

9:00 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

$858SWISS

Tue, Oct 27 - Tue, Nov 10

9:10 pm - 1:00 pmIAD Washington, D.C. Dulles Intl-LHR London Heathrow

11h 50m1 stop Zurich

9:00 am - 5:00 pmLHR London Heathrow-IAD Washington, D.C. Dulles Intl

13h 00m1 stop Zurich

$858SWISS

Recent direct flight deals from District of Columbia to London

Wed, Jan 20 - Tue, Jan 26

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

$714British Airways

Thu, Mar 4 - Thu, Mar 11

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

$768British Airways

Sun, Nov 29 - Tue, Dec 8

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

$841Virgin Atlantic

Tue, Dec 8 - Tue, Dec 15

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

$859Multiple Airlines

Mon, Jan 25 - Fri, Jan 29

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

$866Iberia

Wed, Feb 10 - Wed, Feb 17

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

$867Iberia

Tue, Jan 19 - Tue, Jan 26

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

$867Finnair

Mon, Feb 1 - 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

$868Finnair

Sun, Nov 15 - Sun, Nov 22

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

$877Virgin Atlantic

Wed, Feb 10 - Thu, Feb 18

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

$889Multiple Airlines

Useful Info

Low season	February
High season	March
Cheapest flight	$320

Best time to beat the crowds with an average 27% 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

Bedford

Crawley

Watford

Harrow

Twickenham

Ipswich

St. Albans

Folkestone

Colchester

Woodbridge

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$320 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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