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>

$381 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

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

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

Cheapest round-trip

$572

Overall average: $514

TAP AIR PORTUGAL

Sat 1/24Sat 1/31

IAD - LGW • 1 stop

Cheapest non-stop

$573

Typical prices: $632-$831

Iberia

Thu 3/12Mon 3/16

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

Sat, Jan 24 - Sat, Jan 31

5:30 pm - 9:50 am

IAD

LGW

11h 20m1 stop

4:35 pm - 9:00 pm

LGW

IAD

33h 25m1 stop

$572TAP AIR PORTUGAL

Sun, Jan 11 - Tue, Jan 20

9:45 am - 11:30 am

IAD

STN

20h 45m2 stops

8:10 am - 8:54 pm

STN

IAD

17h 44m2 stops

$573Multiple Airlines

Sun, May 3 - Wed, May 13

8:30 pm - 2:40 pm

IAD

LGW

13h 10m1 stop

3:40 pm - 10:30 pm

LGW

IAD

11h 50m1 stop

$573Icelandair

Thu, Mar 5 - Mon, Mar 9

8:30 pm - 4:25 pm

IAD

LHR

14h 55m2 stops

7:05 am - 6:15 pm

LHR

IAD

15h 10m2 stops

$573Scandinavian Airlines

Fri, May 1 - Mon, May 18

8:30 pm - 2:40 pm

IAD

LGW

13h 10m1 stop

3:40 pm - 7:20 pm

LGW

IAD

32h 40m1 stop

$574Icelandair

Thu, Mar 5 - Thu, Mar 12

5:45 pm - 5:05 pm

IAD

LHR

18h 20m1 stop

6:50 am - 3:35 pm

LHR

IAD

12h 45m1 stop

$574Brussels Airlines

Sat, Jan 10 - Sat, Jan 17

7:40 pm - 8:05 pm

IAD

STN

19h 25m2 stops

6:55 am - 6:30 pm

STN

IAD

16h 35m2 stops

$574Multiple Airlines

Mon, Jan 12 - Sun, Jan 18

8:30 pm - 4:25 pm

IAD

LHR

14h 55m2 stops

6:40 pm - 3:20 pm

LHR

IAD

25h 40m1 stop

$575Scandinavian Airlines

Sun, Jan 11 - Tue, Jan 20

12:55 pm - 9:20 am

DCA

LHR

15h 25m1 stop

9:00 am - 7:45 pm

LHR

DCA

15h 45m2 stops

$606Air Canada

Thu, Mar 5 - Fri, Mar 13

12:55 pm - 8:35 pm

DCA

LHR

26h 40m2 stops

6:50 am - 9:58 pm

LHR

DCA

19h 08m2 stops

$609Air Canada

Useful Info

Low season	February
High season	April
Cheapest flight	$381

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 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

Wembley

Hayes

Richmond

Luton

Ilford

Crawley

Watford

Guildford

Eastbourne

Kingston upon Thames

Colchester

St. Albans

Ipswich

Bedford

Twickenham

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 $2,540

Prem Econ Class flights to Londonfrom $1,272

Economy Class flights to Londonfrom $541

$381 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