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$262+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap 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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$621
(Iberia)

One-way from

$262
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$711

Good round-trip deal

$675 or less

Good one-way deal

$474 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
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From District of Columbia to London Heathrow
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One-way flight from District of Columbia to London Heathrow
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Highest demand for flights based on searches. 13% potential increase in price ($113 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from District of Columbia to London Heathrow.
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Price to beat on a one-way flight from District of Columbia to London Heathrow.
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Find 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 April 30, 2025.

This oojo deal was found by Cheapflights users on 4/28. 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.
Sun 8/1010:05 pmIAD - LHR
2 stops18h 30mScandinavian Airlines
Sat 8/235:00 pmLHR - IAD
1 stop31h 59mScandinavian Airlines
Deal found 4/28$617
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:00 pmDCA - LHR
1 stop9h 45mIberia
Thu 9/2511:30 amLHR - DCA
2 stops16h 30mIberia
Deal found 4/29$621
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/196:30 amDCA - LHR
1 stop9h 15mJetBlue
Sun 10/268:25 amLHR - DCA
1 stop12h 34mJetBlue
Deal found 4/29$622
This oojo deal was found by Cheapflights users on 4/29. 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 8/2911:15 pmIAD - LHR
1 stop16h 05mIcelandair
Tue 9/21:05 pmLHR - IAD
1 stop11h 15mIcelandair
Deal found 4/29$623
This Delta deal was found by Cheapflights users on 4/29. 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.
Tue 8/53:30 pmIAD - LHR
1 stop10h 45mDelta
Thu 8/1411:30 amLHR - IAD
1 stop12h 45mDelta
Deal found 4/29$624
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 8/265:55 pmIAD - LHR
Nonstop7h 20mIberia
Wed 9/36:15 amLHR - IAD
1 stop13h 45mIberia
Deal found 4/29$627
This World Air Fares deal was found by Cheapflights users on 4/28. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:30 pmIAD - LHR
Nonstop7h 25mLufthansa
Wed 5/2112:15 pmLHR - IAD
Nonstop8h 10mLufthansa
Deal found 4/28$634
This The Travel House deal was found by Cheapflights users on 4/29. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/61:45 pmDCA - LHR
1 stop11h 45mIcelandair
Wed 5/148:15 amLHR - DCA
1 stop19h 43mIcelandair
Deal found 4/29$637
This FlightHub deal was found by Cheapflights users on 4/29. 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 5/115:20 pmIAD - LHR
1 stop10h 45mAer Lingus
Thu 5/228:50 amLHR - IAD
1 stop12h 00mAer Lingus
Deal found 4/29$638
This Delta deal was found by Cheapflights users on 4/29. 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.
Tue 5/135:00 pmDCA - LHR
1 stop11h 15mDelta
Fri 5/304:05 pmLHR - DCA
1 stop11h 40mDelta
Deal found 4/29$646
This Air Canada deal was found by Cheapflights users on 4/29. 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 9/312:35 pmIAD - LHR
2 stops12h 55mMultiple Airlines
Wed 9/1710:30 amLHR - IAD
2 stops15h 35mMultiple Airlines
Deal found 4/29$648
This Finnair deal was found by Cheapflights users on 4/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/197:17 pmDCA - LHR
1 stop10h 48mFinnair
Tue 8/265:00 pmLHR - DCA
1 stop11h 17mFinnair
Deal found 4/29$649

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 April 30, 2025.
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

Tue 5/13

10:40 pm-11:05 am

Nonstop7h 25m

London Heathrow

Thu 5/29

6:15 am-3:00 pm

1 stop13h 45m

$619

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 5/13

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Sun 5/18

9:25 pm-7:20 pm

1 stop26h 55m

$621

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 5/13

3:52 pm-7:15 am

1 stop10h 23m

London Heathrow

Wed 5/21

9:30 am-3:50 pm

1 stop11h 20m

$622

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 5/14

5:50 pm-6:20 am

Nonstop7h 30m

London Heathrow

Tue 9/9

6:15 am-7:15 pm

1 stop18h 00m

$623

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/6

1:45 pm-6:30 am

1 stop11h 45m

London Heathrow

Wed 5/14

8:15 am-10:58 pm

1 stop19h 43m

$637

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 5/11

5:20 pm-9:05 am

1 stop10h 45m

London Heathrow

Thu 5/22

8:50 am-3:50 pm

1 stop12h 00m

$638

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 5/9

6:09 am-8:45 pm

1 stop9h 36m

London Heathrow

Thu 5/22

8:25 am-4:55 pm

1 stop13h 30m

$644

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/13

5:00 pm-9:15 am

1 stop11h 15m

London Heathrow

Fri 5/30

4:05 pm-10:45 pm

1 stop11h 40m

$646

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 5/12

2:25 pm-6:35 am

1 stop11h 10m

London Heathrow

Tue 5/20

10:30 am-9:08 pm

2 stops15h 38m

$654

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 5/13

6:30 pm-6:55 am

Nonstop7h 25m

London Heathrow

Wed 5/21

8:40 am-4:15 pm

1 stop12h 35m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 54 results
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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, November is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of $661). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of $1,110). 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 April 30, 2025.

When flying from District of Columbia to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 April 30, 2025.

The most flights from USDC to LHR are scheduled on a Monday (27 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated April 30, 2025.
Read through reviews of airlines operating flights from District of Columbia to London, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 $264. Users have also found prices from $270 and $319 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: Singapore Airlines (91%), Delta (89%), Virgin Atlantic( 87%).

  • 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 $2,419, our data indicates the cheapest price to be $395. The most popular route (Washington, D.C. Dulles Intl - London Heathrow), is priced around $419.

  • 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, November is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of $661). Flying from District of Columbia to London Heathrow Airport in June is currently the most expensive (average of $1,110). 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 District of Columbia?

Book flights to District of Columbia if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Luton
Horley
Canterbury
Harrow
Wembley
Dover
Stratford-upon-Avon
Gatwick
Orpington
Watford
Northampton
Croydon
Borehamwood
Folkestone
Ilford
Broadway
Aylesbury

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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.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
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O'Hare Intl to Heathrow flights
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John F Kennedy Intl to Stansted flights
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Reagan-National to Heathrow flights
Boston to London City flights
Hobby to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to London City flights
Los Angeles to London City flights
Philadelphia to Heathrow flights
Stewart to Stansted flights
John F Kennedy Intl to Luton flights
Reagan-National to Gatwick flights
George Bush Intcntl to Heathrow flights
Tampa to Heathrow flights
Baltimore to Gatwick flights
Seattle to Gatwick flights
San Francisco to Gatwick flights
Austin to Heathrow flights
San Francisco to London City flights
Sky Harbor Intl to Heathrow flights
Los Angeles to Gatwick flights
O'Hare Intl to Gatwick flights
Portland to Heathrow flights
Minneapolis to Heathrow flights
Los Angeles to Luton flights
Orlando to Gatwick flights
Charlotte to Heathrow flights
O'Hare Intl to London City flights
Raleigh to Heathrow flights
Dallas/Fort Worth 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$597FlexibilityNo cancel feeOn-time77%
PLAYCheapest$384Average$533FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$421Average$851FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$474Average$602FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$486Average$759FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$535Average$720FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$549Average$750FlexibilityNo cancel feeOn-time67%
IberiaCheapest$562Average$716FlexibilityNo cancel feeOn-time77%
SWISSCheapest$572Average$801FlexibilityNo cancel feeOn-time79%
FinnairCheapest$573Average$758FlexibilityNo cancel feeOn-time76%

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