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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$252 CHEAP FLIGHTS from District of Columbia to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$561

Overall average: $589

Icelandair

Fri 3/6Sun 3/15

IAD - LGW • 1 stop

Cheapest non-stop

$575

Typical prices: $697-$1,085

British Airways

Tue 12/9Wed 1/14

IAD - LHR • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to London!

Flight Deals

Cheap Flights from District of Columbia to London

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from District of Columbia to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

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, Mar 6 - Sun, Mar 15

7:40 pm - 10:55 amIAD-LGW

10h 15m1 stop

11:55 am - 7:30 pmLGW-IAD

11h 35m1 stop

$561Icelandair

Find Deal

Wed, Nov 12 - Thu, Nov 20

7:40 pm - 7:30 pmIAD-LHR

18h 50m1 stop

12:15 pm - 6:30 pmLHR-IAD

11h 15m1 stop

$561Icelandair

Find Deal

Mon, Nov 24 - Mon, Dec 1

9:45 am - 10:40 pmIAD-STN

31h 55m2 stops

11:35 am - 4:40 pmSTN-IAD

34h 05m2 stops

$562Multiple Airlines

Find Deal

Sun, Nov 30 - Wed, Dec 10

10:30 pm - 5:30 pmIAD-LHR

14h 00m1 stop

6:00 am - 9:00 pmLHR-IAD

20h 00m1 stop

$563TAP AIR PORTUGAL

Find Deal

Sun, Apr 5 - Sat, Apr 11

5:40 pm - 8:25 pmIAD-LGW

21h 45m2 stops

4:30 pm - 3:05 pmLGW-IAD

27h 35m1 stop

$564TAP AIR PORTUGAL

Find Deal

Wed, Dec 31 - Sun, Jan 18

7:40 pm - 4:00 pmIAD-STN

15h 20m2 stops

5:55 am - 6:30 pmSTN-IAD

17h 35m2 stops

$565Multiple Airlines

Find Deal

Sun, Nov 9 - Tue, Nov 18

3:35 pm - 7:50 amIAD-LHR

11h 15m1 stop

4:50 pm - 8:30 pmLHR-IAD

8h 40mnonstop

$570Virgin Atlantic

Find Deal

Wed, Feb 4 - Sun, Feb 8

12:23 pm - 9:20 amIAD-LHR

15h 57m2 stops

7:50 pm - 5:15 pmLHR-IAD

26h 25m2 stops

$571Scandinavian Airlines

Find Deal

Sun, Nov 9 - Tue, Nov 18

12:36 pm - 6:25 amIAD-LHR

12h 49m1 stop

4:50 pm - 8:30 pmLHR-IAD

8h 40mnonstop

$572Virgin Atlantic

Find Deal

Sat, Jan 17 - Mon, Jan 19

11:10 am - 5:40 pmDCA-LHR

25h 30m2 stops

5:00 pm - 7:52 pmLHR-DCA

31h 52m2 stops

$574Scandinavian Airlines

Find Deal

Useful Info

Low season	February
High season	April
Cheapest flight	$252

Best time to beat the crowds with an average 11% drop in price.

Most popular time to fly and prices are also 3% lower on average.

Flight from Washington Dulles Airport to London Gatwick Airport

DeeFlew with United AirlinesIAD-LHRFeb 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 AirwaysIAD-LHROct 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 AirlinesIAD-LHRJun 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

Wembley

Hayes

Richmond

Luton

Ilford

Crawley

Guildford

Watford

Kingston upon Thames

Eastbourne

Colchester

Ipswich

St. Albans

Twickenham

Harrow

Bedford

Hastings

Worthing

Everything you need to know for your flight to London

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Cabin class types available on flights to District of Columbia

First Class flights to Londonfrom $4,187

Business Class flights to Londonfrom $2,412

Prem Econ Class flights to Londonfrom $1,314

Economy Class flights to Londonfrom $585

$250 Find Cheap Flights from District of Columbia to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

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

Good to know

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

FAQs for booking flights from District of Columbia to London

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.

Traveling to a place near London?

Everything you need to know for your flight to London

Cabin class types available on flights to District of Columbia

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

Find direct flights for London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

Find deals for your return flight