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$370+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LON
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:40 pmIAD - LHR
1 stop10h 10mIcelandair
Tue 1/1312:15 pmLHR - IAD
1 stop11h 15mIcelandair
Deal found 12/18$583
This Cheapflightsfares deal was found by Cheapflights users on 12/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:25 pmIAD - LHR
1 stop17h 55mSWISS
Wed 1/146:00 amLHR - IAD
1 stop14h 30mSWISS
Deal found 12/16$587
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:15 pmIAD - LHR
Nonstop7h 35mUnited Airlines
Wed 1/146:50 amLHR - IAD
1 stop12h 45mUnited Airlines
Deal found 12/17$606
This Air Canada deal was found by Cheapflights users on 12/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:10 pmIAD - LHR
1 stop11h 10mAir Canada
Wed 1/146:50 amLHR - IAD
2 stops14h 34mAir Canada
Deal found 12/18$609
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/307:40 pmIAD - LHR
1 stop10h 10mIcelandair
Sat 1/2412:15 pmLHR - IAD
1 stop11h 15mIcelandair
Deal found 12/17$611
This Air Canada deal was found by Cheapflights users on 12/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:10 pmDCA - LHR
1 stop10h 00mAir Canada
Wed 1/146:50 amLHR - DCA
2 stops13h 41mAir Canada
Deal found 12/16$612
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:05 amDCA - LHR
1 stop15h 05mMultiple Airlines
Wed 1/146:50 amLHR - DCA
2 stops13h 41mMultiple Airlines
Deal found 12/17$613
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:20 pmIAD - LHR
Nonstop7h 30mDelta
Wed 1/148:55 amLHR - IAD
1 stop12h 40mDelta
Deal found 12/16$613
This Air Canada deal was found by Cheapflights users on 12/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amIAD - LHR
2 stops15h 45mMultiple Airlines
Wed 1/146:50 amLHR - IAD
2 stops14h 34mMultiple Airlines
Deal found 12/18$619
This CheapOair deal was found by Cheapflights users on 12/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:05 pmIAD - LHR
1 stop11h 00mAer Lingus
Wed 1/147:50 amLHR - IAD
1 stop12h 45mAer Lingus
Deal found 12/18$620
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Wed 12/315:31 pmIAD - LHR
1 stop12h 44mAustrian Airlines
Sat 1/246:00 amLHR - IAD
1 stop13h 40mAustrian Airlines
Deal found 12/17$626
This Gurufare deal was found by Cheapflights users on 12/17. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:31 pmIAD - LHR
1 stop31h 24mMultiple Airlines
Tue 1/139:00 amLHR - IAD
1 stop12h 40mMultiple Airlines
Deal found 12/17$630

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 December 18, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$577
(oojo)

One-way from

$370
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$978

Good round-trip deal

$695 or less

Good one-way deal

$434 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. 6% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
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

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 2/18

4:15 pm-10:40 pm

2 stops25h 25m

London Stansted

Wed 2/25

6:25 pm-3:33 pm

3 stops26h 08m

$582

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 1/24

8:30 pm-6:50 pm

2 stops17h 20m

London Heathrow

Tue 2/3

9:05 pm-5:15 pm

2 stops25h 10m

$583

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 3/14

9:30 pm-11:25 pm

2 stops21h 55m

London Stansted

Sat 3/21

6:45 am-9:05 pm

2 stops18h 20m

$590

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Fri 1/16

9:40 am-10:35 pm

3 stops31h 55m

London Stansted

Wed 1/21

8:05 am-9:58 pm

3 stops18h 53m

$591

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 3/18

11:30 pm-9:50 am

1 stop30h 20m

London Gatwick

Wed 3/25

10:40 am-10:00 pm

1 stop15h 20m

$610

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 2/13

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Thu 2/19

6:50 am-2:35 pm

1 stop12h 45m

$614

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/4

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Mon 3/9

6:50 am-3:35 pm

1 stop12h 45m

$614

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 3/1

6:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Mon 3/9

6:50 am-3:35 pm

1 stop12h 45m

$614

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 4/11

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Sat 4/18

3:40 pm-7:20 pm

1 stop32h 40m

$618

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 1/7

11:05 am-7:10 am

1 stop15h 05m

London Heathrow

Wed 1/14

6:50 am-3:31 pm

2 stops13h 41m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results
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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 $725). 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 December 18, 2025.

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 afternoon, which can drop the price by up to 21% versus a flight at noon.

What is the cheapest day to fly from District of Columbia to London?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to London. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their District of Columbia to London flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 18, 2025.

The most flights from USDC to LON are scheduled on a Monday (26 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (22 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 35m. 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 Scandinavian Airlines and TAP AIR PORTUGAL, 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: KLM (95%), Air France (92%), Delta (92%).

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

    Looking at all options, your cheapest flight can be booked for $350. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $419 on average, our data indicates $2,133 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 $725). 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
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley
Folkestone
Eastbourne

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$802FlexibilityNo cancel feeOn-time62%
PLAYCheapest$369Average$511FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$395Average$566FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$427Average$630FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$429Average$593FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$447Average$1,061FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$497Average$842FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$845FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$506Average$837FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$615FlexibilityNo cancel feeOn-time75%

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