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$333+ Cheap flights from District of Columbia to London (LON)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LON
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from District of Columbia to London

Cheapest flights from District of Columbia to London
Explore the most affordable flight options available from District of Columbia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Mytrip deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Thu 4/301:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 1/31$522
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Sun 2/2211:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Deal found 2/1$523
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Mon 4/201:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/1$523
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/168:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Sun 4/199:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/1$524
This FlightHub deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/218:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Thu 4/93:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Deal found 2/1$525
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:40 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Wed 2/2512:15 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/1$526
This oojo deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/218:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Sun 5/31:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Deal found 2/1$527
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:40 pm
IAD
-
LHR
1 stop10h 10m
Icelandair
Wed 3/258:35 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/2$527
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/228:40 pm
IAD
-
LHR
1 stop10h 10m
Icelandair
Mon 3/309:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/1$528
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Fri 5/13:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Deal found 2/2$529
This FlightHub deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/178:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Sat 4/259:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 1/31$529
This Mytrip deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/298:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Wed 5/63:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Deal found 1/31$530

Find flight deals from District of Columbia to London

Keep the following information in mind while searching for District of Columbia to London flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$522
(CrystalTravel)

One-way from

$333
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$643

Good round-trip deal

$659 or less

Good one-way deal

$374 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
Search Deals
From District of Columbia to London (LON)
Search Deals
One-way flight from District of Columbia to London (LON)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from District of Columbia to London (LON).
Search Deals
Price to beat on a one-way flight from District of Columbia to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from District of Columbia to London that are best for you.

Fly from

District of Columbia

Fly to

London

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 4/17

5:05 pm-3:40 pm

1 stop17h 35m

London Gatwick

Mon 5/4

9:15 pm-3:05 pm

2 stops22h 50m

$535

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 4/16

8:30 pm-12:30 am

2 stops23h 00m

London Stansted

Tue 4/21

7:10 am-7:20 pm

2 stops17h 10m

$545

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Mon 2/16

4:15 pm-10:40 pm

2 stops25h 25m

London Stansted

Tue 2/24

6:05 pm-9:56 pm

3 stops32h 51m

$546

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Mon 2/9

9:45 am-9:05 pm

3 stops30h 20m

London Luton

Mon 2/23

9:45 am-4:40 pm

2 stops35h 55m

$550

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 4/7

8:30 pm-12:10 am

2 stops22h 40m

London Stansted

Thu 4/16

8:50 am-7:20 pm

2 stops15h 30m

$558

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/15

8:30 pm-9:40 pm

2 stops20h 10m

London Stansted

Mon 4/20

8:15 am-7:20 pm

2 stops16h 05m

$560

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 2/15

10:30 pm-3:45 pm

1 stop12h 15m

London Gatwick

Tue 2/24

9:20 pm-9:00 pm

2 stops28h 40m

$578

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 3/10

6:30 pm-9:25 am

2 stops34h 55m

London Gatwick

Mon 3/16

4:35 pm-3:35 pm

1 stop27h 00m

$611

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 2/15

10:20 pm-10:40 am

Nonstop7h 20m

London Heathrow

Tue 2/24

10:00 am-4:05 pm

1 stop11h 05m

$616

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/18

11:20 pm-10:40 am

Nonstop7h 20m

London Heathrow

Wed 3/25

10:00 am-5:05 pm

1 stop11h 05m

$617

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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Best time to book a flight from District of Columbia to London

Have a flexible travel schedule? Discover the best time to fly to London from District of Columbia with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to London

What is the cheapest month to book a flight from District of Columbia to London?

Currently, March is the cheapest month in which you can book a flight from District of Columbia to London (average of $31). Flying from District of Columbia to London in June is currently the most expensive (average of $720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DC to LON?

Find hourly flight availability from District of Columbia to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.

When flying from District of Columbia to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 50% versus a flight at noon.

Weekly flight availability from District of Columbia to London

Explore weekly flight availability from District of Columbia to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 3, 2026.

The most flights from USDC to LON are scheduled on a Wednesday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (20 on average).

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from District of Columbia to London?

    Departing from District of Columbia to London will take you 7h 20m. The distance between District of Columbia and London is about 3664 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from District of Columbia to London one-way?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $182. However, be on the lookout for offers from TAP AIR PORTUGAL and JetBlue, as they are both options that can get you from District of Columbia to London for a low price.

  • What are the most popular routes from District of Columbia to London?

    When deciding which route to take from District of Columbia to London consider Washington, D.C. Dulles Intl - London Heathrow, Washington, D.C. Reagan-National - London Heathrow or Washington, D.C. Dulles Intl - London Gatwick as they are the most popular.

  • What are the most reliable airlines from District of Columbia to London?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from District of Columbia to London on time: American Airlines (83%), Aer Lingus (83%), Finnair (83%).

  • What are the cheapest flights from District of Columbia to London?

    Looking at all options, your cheapest flight can be booked for $258. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $429 on average, our data indicates $2,137 when flying from District of Columbia to London.

  • Can I find deals for flights from District of Columbia to London that include hotel bookings?

    Yes. In addition to deals on District of Columbia to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to London.

  • Can I find deals for business class flights from District of Columbia to London?

    Yes. Cheapflights offers flight deals from District of Columbia to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from District of Columbia to London?

    Currently, March is the cheapest month in which you can book a flight from District of Columbia to London (average of $31). Flying from District of Columbia to London in June is currently the most expensive (average of $720). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

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Alternative routes for District of Columbia to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from District of Columbia to London

Discover the top 10 airlines that operate flights from District of Columbia to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$821FlexibilityNo cancel feeOn-time62%
PLAYCheapest$374Average$530FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$411Average$550FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$415Average$631FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$442Average$868FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$447Average$1,138FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$454Average$597FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$462Average$829FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$471Average$815FlexibilityNo cancel feeOn-time72%
KLMCheapest$488Average$691FlexibilityNo cancel feeOn-time75%

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