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>

$346 CHEAP FLIGHTS from District of Columbia to London

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

...and more

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

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Cheapest round-trip

$522

Overall average: $647

Icelandair

Fri 5/1Sat 5/9

IAD - LGW • 1 stop

Cheapest non-stop

$578

Typical prices: $634-$858

Finnair

Tue 3/17Tue 3/24

IAD - LHR • Non-stop

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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, May 1 - Sat, May 9

8:30 pm - 11:45 am

IAD

LGW

10h 15m

1 stop

1:00 pm - 7:20 pm

LGW

IAD

11h 20m

1 stop

$522Icelandair

Fri, Feb 20 - Sun, Feb 22

4:30 pm - 8:30 am

IAD

LHR

11h 00m

1 stop

8:30 am - 3:50 pm

LHR

IAD

12h 20m

1 stop

$522Multiple Airlines

Fri, May 1 - Sun, May 10

8:30 pm - 11:45 am

IAD

LGW

10h 15m

1 stop

3:40 pm - 10:15 pm

LGW

IAD

11h 35m

1 stop

$523Icelandair

Tue, Mar 3 - Wed, Mar 11

5:30 pm - 1:40 pm

IAD

LTN

15h 10m

1 stop

7:30 am - 10:00 pm

LTN

IAD

18h 30m

1 stop

$524Multiple Airlines

Tue, Apr 14 - Mon, Apr 20

5:05 pm - 9:45 am

IAD

LGW

11h 40m

1 stop

12:05 pm - 3:05 pm

LGW

IAD

32h 00m

2 stops

$526TAP AIR PORTUGAL

Thu, Feb 5 - Sun, Feb 8

5:30 pm - 8:40 pm

IAD

LGW

22h 10m

2 stops

10:40 am - 9:00 pm

LGW

IAD

15h 20m

1 stop

$529TAP AIR PORTUGAL

Tue, Mar 3 - Wed, Mar 11

8:20 am - 7:30 am

DCA

LGW

18h 10m

1 stop

11:20 am - 11:46 pm

LGW

DCA

16h 26m

1 stop

$564British Airways

Mon, Mar 2 - Tue, Mar 10

11:05 am - 7:10 am

DCA

LHR

15h 05m

1 stop

1:25 pm - 9:56 pm

LHR

DCA

12h 31m

1 stop

$569Air Canada

Sun, Feb 1 - Tue, Feb 10

4:15 pm - 7:10 am

DCA

LHR

9h 55m

1 stop

11:10 am - 6:05 pm

LHR

DCA

11h 55m

1 stop

$572Air Canada

Mon, Apr 13 - Tue, Apr 21

11:18 am - 10:10 am

DCA

LGW

17h 52m

1 stop

10:45 am - 11:34 pm

LGW

DCA

17h 49m

1 stop

$580British Airways

Useful Info

Low season	January
High season	April
Cheapest flight	$346

Best time to beat the crowds with an average 12% 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 Airlines

IAD

LHR

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

IAD

LHR

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

IAD

LHR

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

Wembley

Richmond

Luton

Ilford

Crawley

Watford

Eastbourne

Guildford

Kingston upon Thames

Colchester

St. Albans

Twickenham

Ipswich

Bedford

Barnet

Hastings

Harrow

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 $2,343

Premium Economy Class flights to Londonfrom $1,353

Economy Class flights to Londonfrom $547

$346 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