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Heathrow

$335+ Cheap flights from District of Columbia to Heathrow (LHR)

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
Mar 12 — Mar 191
Thu 3/12
Thu 3/19
1 adult, Economy
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Cheap flight deals from District of Columbia to Heathrow

Cheapest flights from District of Columbia to Heathrow
Explore the most affordable flight options available from District of Columbia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 10, 2026.

This oojo deal was found by Cheapflights users on 2/9. 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.
Fri 5/18:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Sat 5/99:25 pm
LHR
-
IAD
1 stop29h 50m
Icelandair
Deal found 2/9$537
This FlightHub deal was found by Cheapflights users on 2/7. 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.
Sun 5/178:20 pm
IAD
-
LHR
1 stop32h 00m
Scandinavian Airlines
Wed 5/207:05 am
LHR
-
IAD
2 stops38h 45m
Scandinavian Airlines
Deal found 2/7$538
This oojo deal was found by Cheapflights users on 2/7. 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.
Wed 2/1810:30 pm
IAD
-
LHR
1 stop15h 25m
TAP AIR PORTUGAL
Wed 2/256:30 pm
LHR
-
IAD
1 stop25h 45m
TAP AIR PORTUGAL
Deal found 2/7$539
This oojo deal was found by Cheapflights users on 2/6. 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.
Wed 2/1810:30 pm
IAD
-
LHR
1 stop18h 05m
TAP AIR PORTUGAL
Wed 3/46:30 pm
LHR
-
IAD
1 stop25h 45m
TAP AIR PORTUGAL
Deal found 2/6$540
This FlightHub deal was found by Cheapflights users on 2/7. 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 5/98:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Thu 5/149:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/7$541
This FlightHub deal was found by Cheapflights users on 2/7. 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 4/188:20 pm
IAD
-
LHR
2 stops32h 15m
Scandinavian Airlines
Tue 4/217:05 am
LHR
-
IAD
2 stops34h 00m
Scandinavian Airlines
Deal found 2/7$542
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/148:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Tue 4/211:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/9$544
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 4/138:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Tue 4/211:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/7$545
This KAYAK deal was found by Cheapflights users on 2/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Mon 4/201:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/7$546
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/158:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Mon 4/201:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 2/9$547
This KAYAK deal was found by Cheapflights users on 2/7. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:30 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Mon 4/279:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/7$548
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Thu 4/238:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Wed 4/299:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 2/9$549

Find flight deals from District of Columbia to Heathrow

Keep the following information in mind while searching for District of Columbia to Heathrow flight deals. Data was last updated February 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$537
(oojo)

One-way from

$335
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$642

Good round-trip deal

$660 or less

Good one-way deal

$370 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 Heathrow
Search Deals
One-way flight from District of Columbia to London Heathrow
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($98 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 Heathrow.
Search Deals
Price to beat on a one-way flight from District of Columbia to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia to Heathrow 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 10, 2026.
Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

District of Columbia

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 2/22

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Tue 3/3

6:35 am-3:35 pm

1 stop14h 00m

$617

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/11

7:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Wed 3/18

6:50 am-3:35 pm

1 stop12h 45m

$617

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 3/12

7:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Mon 3/16

7:40 am-9:05 pm

1 stop17h 25m

$617

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 2/22

10:20 pm-10:40 am

Nonstop7h 20m

London Heathrow

Wed 3/4

8:40 am-4:05 pm

1 stop12h 25m

$618

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/18

11:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Wed 3/25

6:35 am-4:35 pm

1 stop14h 00m

$619

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 3/15

7:59 pm-10:15 am

1 stop10h 16m

London Heathrow

Wed 3/25

10:00 am-5:05 pm

1 stop11h 05m

$624

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 3/10

1:02 pm-7:10 am

2 stops14h 08m

London Heathrow

Tue 3/17

6:50 am-3:35 pm

1 stop12h 45m

$625

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/25

7:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Mon 3/30

10:50 am-3:00 pm

1 stop33h 10m

$628

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 3/19

7:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Mon 3/30

10:50 am-3:00 pm

1 stop33h 10m

$628

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 2/25

6:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Mon 3/9

4:40 pm-4:35 pm

1 stop27h 55m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

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

Have a flexible travel schedule? Discover the best time to fly to Heathrow 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 Heathrow Airport

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

Currently, March is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of $31). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of $697). 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 LHR?

Find hourly flight availability from District of Columbia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 10, 2026.

It’s typically best to fly out from District of Columbia to London Heathrow Airport in the morning. Doing so could potentially save you 50% on the flight price compared to flying at noon, which is usually more expensive.

Weekly flight availability from District of Columbia to London Heathrow Airport

Explore weekly flight availability from District of Columbia to Heathrow. 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 10, 2026.

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

How much does it cost to fly round-trip from District of Columbia to London Heathrow Airport?

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Heathrow. 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 Heathrow Airport?

    Departing from District of Columbia to London Heathrow Airport will take you 7h 20m. The distance between District of Columbia and London Heathrow Airport is about 3664 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $191. Users have also found prices from $222 and $248 on TAP AIR PORTUGAL and JetBlue, respectively.

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

    Before booking your flight to London Heathrow Airport from District of Columbia, check out the most reliable airlines to get you to your destination on time: American Airlines (83%), Aer Lingus (83%), Finnair( 83%).

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

    Looking for the cheapest flight from District of Columbia to London Heathrow Airport? While on average our users pay $2,253, our data indicates the cheapest price to be $258. The most popular route (Washington, D.C. Dulles Intl - London Heathrow), is priced around $426.

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

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

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

    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 Heathrow.

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

    Yes. Cheapflights offers flight deals from District of Columbia to Heathrow 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 Heathrow Airport?

    Currently, March is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of $31). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of $697). 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 Heathrow Airport?

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

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Alternative routes for District of Columbia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to Gatwick flights
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Newark to Luton flights
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O'Hare Intl to London City flights
Los Angeles to Stansted flights
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San Francisco to Gatwick flights
Los Angeles to London City flights
Baltimore to Gatwick flights
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Dallas/Fort Worth to Gatwick flights
Austin to Heathrow flights
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Seattle to Gatwick flights

Top 10 airlines flying from District of Columbia to Heathrow

Discover the top 10 airlines that operate flights from District of Columbia to Heathrow. 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 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$821FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$411Average$550FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$415Average$607FlexibilityNo 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$834FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$471Average$817FlexibilityNo cancel feeOn-time72%
KLMCheapest$488Average$647FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$497Average$805FlexibilityNo cancel feeOn-time71%

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