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Cheap flights from London Heathrow Airport to Washington, D.C. from £264

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
10 Jul — 17 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in January or September, booked 78 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Heathrow to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 June 2026.

Tue 7/708:30
LHR
-
IAD
2 stops17h 49m
Air Canada
Fri 11/916:00
IAD
-
LHR
1 stop14h 50m
Air Canada
Deal found 10/6£486
Mon 15/615:00
LHR
-
IAD
1 stop14h 13m
American Airlines
Mon 22/620:22
IAD
-
LHR
1 stop10h 48m
American Airlines
Deal found 8/6£487
Wed 17/612:00
LHR
-
IAD
1 stop12h 33m
British Airways
Sun 28/620:22
IAD
-
LHR
1 stop10h 48m
British Airways
Deal found 9/6£488
Wed 1/710:05
LHR
-
DCA
1 stop12h 08m
American Airlines
Sun 12/706:30
DCA
-
LHR
1 stop10h 10m
American Airlines
Deal found 9/6£488
Tue 11/808:45
LHR
-
IAD
1 stop13h 00m
United Airlines
Thu 20/812:35
IAD
-
LHR
1 stop13h 40m
United Airlines
Deal found 8/6£489
Fri 19/609:15
LHR
-
DCA
1 stop19h 39m
American Airlines
Mon 22/619:07
DCA
-
LHR
1 stop12h 03m
American Airlines
Deal found 9/6£489
Wed 22/708:40
LHR
-
IAD
1 stop13h 05m
United Airlines
Wed 12/818:30
IAD
-
LHR
Nonstop7h 25m
United Airlines
Deal found 9/6£489
Mon 6/709:15
LHR
-
DCA
1 stop14h 07m
American Airlines
Tue 21/713:59
DCA
-
LHR
1 stop15h 31m
American Airlines
Deal found 10/6£489
Wed 8/714:45
LHR
-
DCA
1 stop14h 14m
Finnair
Sat 11/719:58
DCA
-
LHR
1 stop20h 42m
Finnair
Deal found 9/6£490
Mon 10/807:40
LHR
-
IAD
1 stop13h 05m
British Airways
Fri 21/817:15
IAD
-
LHR
1 stop9h 50m
British Airways
Deal found 10/6£491
Wed 8/712:15
LHR
-
IAD
Nonstop8h 15m
Lufthansa
Thu 13/822:15
IAD
-
LHR
Nonstop7h 25m
Lufthansa
Deal found 9/6£492
Thu 27/809:30
LHR
-
DCA
1 stop31h 30m
United Airlines
Tue 1/906:00
DCA
-
LHR
1 stop10h 25m
United Airlines
Deal found 8/6£492

Find flight deals from Heathrow to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 10 June 2026.

Round-trip from

£486

One-way from

£264

Popular in

July

Cheapest in

January

Average price

£578

Good round-trip deal

£562 or less

Good one-way deal

£518 or less
Lufthansa
  • Lufthansa
  • 5/7-12/7
  • 2 total stops
  • 22h 55m total
  • London to Washington, D.C.
Search Deals
British Airways
  • British Airways
  • 16/9
  • Nonstop
  • 8h 15m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£43 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from London Heathrow to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Washington, D.C. 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 858,174 searches. Data last updated 10 June 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 11/8

08:45-16:45

1 stop13h 00m

Washington, D.C. Dulles Intl

Sat 22/8

06:15-20:40

1 stop9h 25m

£490

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 10/8

07:30-16:05

1 stop13h 35m

Washington, D.C. Dulles Intl

Fri 21/8

18:30-06:55

Nonstop7h 25m

£495

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 20/8

09:15-15:58

1 stop11h 43m

Washington, D.C. Reagan-National

Mon 21/9

18:23-09:10

1 stop9h 47m

£496

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 9/7

17:25-23:31

1 stop11h 06m

Washington, D.C. Reagan-National

Sat 11/7

19:58-21:40

1 stop20h 42m

£514

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 22/7

16:40-20:00

Nonstop8h 20m

Washington, D.C. Dulles Intl

Mon 10/8

18:30-06:55

Nonstop7h 25m

£518

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 6/8

17:25-23:33

1 stop11h 08m

Washington, D.C. Reagan-National

Sat 15/8

18:23-09:50

1 stop10h 27m

£521

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 8/8

07:45-14:23

1 stop11h 38m

Washington, D.C. Reagan-National

Sat 29/8

13:01-05:55

1 stop11h 54m

£521

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 9/8

07:45-23:19

1 stop20h 34m

Washington, D.C. Dulles Intl

Sat 15/8

12:35-07:15

1 stop13h 40m

£522

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 8/8

07:45-23:19

1 stop20h 34m

Washington, D.C. Dulles Intl

Tue 18/8

18:30-06:55

Nonstop7h 25m

£527

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 25/6

09:15-16:13

1 stop11h 58m

Washington, D.C. Reagan-National

Sun 28/6

15:20-06:55

1 stop10h 35m

£529

Flights are sorted by cheapest return flights first.

Deals found on 8/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Heathrow with our price prediction graph.
Estimated return 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 London Heathrow Airport to Washington, D.C.

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of £264). Flying from London Heathrow Airport to Washington, D.C. in April is currently the most expensive (average of £1,122). 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 LHR to WAS?

Find hourly flight availability from Heathrow to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 June 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Washington, D.C. as you normally would.

Weekly flight availability from London Heathrow Airport to Washington, D.C.

Explore weekly flight availability from Heathrow to Washington, D.C.. 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 10 June 2026.

The most flights from LHR to WAS are scheduled on a Monday (28 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (27 on average).

How much does it cost for a return flight from London Heathrow Airport to Washington, D.C.?

What’s the top stopover airport for flights from London Heathrow Airport to Washington, D.C.?

Share of one-stop return flights from London Heathrow Airport to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dublin (DUB) – chosen by Cheapflights users on 34% of one-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

What’s the cheapest stopover airport for flights from London Heathrow Airport to Washington, D.C.?

Average return fare for one-stop flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Shannon (SNN) is the most affordable one-stop option, with an average return flight price of £339.

What’s the fastest stopover option from London Heathrow Airport to Washington, D.C.?

Shortest average travel time for one-stop one-way flights from London Heathrow Airport to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for one-stop routes: 10h 57m.

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to Washington, D.C.?

Average stopover duration for one-stop one-way flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 18m.

How often are flights from London to Washington, D.C. delayed?

About 18% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 133 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Washington, D.C. flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

How far ahead should I book a flight from London Heathrow Airport to Washington, D.C.?

The best time to book flights from London Heathrow Airport to Washington, D.C. is 81 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated 10 June 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Washington, D.C., such as Austrian Airlines,Virgin Atlantic, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Austrian Airlines
7.6
Good
929 reviews
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Virgin Atlantic
7.5
Good
689 reviews
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
United Airlines
7.4
Good
9,808 reviews
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
Lufthansa
6.8
Okay
8,052 reviews
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.
British Airways
6.7
Okay
8,042 reviews
Austrian Airlines
7.6
Good
929 reviews
Check prices

Food

6.8

Crew

8.1

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Reviews

1 / 20
10.0
Excellent

KENNETH,Mar 2026

VIE - EWR

Everything was great, took off on time, arrived on time, boarding was smooth, food and movies were great.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Washington, D.C.. 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 London Heathrow Airport to Washington, D.C.?

    For as low as £514, United Airlines can have you in Washington, D.C. from London Heathrow Airport in 11h 06m. There are 3652 mi between London Heathrow Airport and Washington, D.C.. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?

    According to our current data, United Airlines (£332), TAP AIR PORTUGAL (£332), and Icelandair (£333) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. United Airlines is currently priced 37% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £352. However, be on the lookout for offers from Aer Lingus and TAP AIR PORTUGAL, as they are both options that can get you from London Heathrow Airport to Washington, D.C. for a low price.

  • What are the most popular routes from London Heathrow Airport to Washington, D.C.?

    When deciding which route to take from London Heathrow Airport to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.

  • What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?

    Consider Air Canada (91%), Austrian Airlines (91%) or Copa Airlines (91%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Washington, D.C..

  • What are the cheapest flights from London Heathrow Airport to Washington, D.C.?

    Looking for the cheapest flight from London Heathrow Airport to Washington, D.C.? While on average our users pay £1,018, our data indicates the cheapest price to be £445. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £350.

  • Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Heathrow to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Washington, D.C..

  • Can I find deals for business class flights from Heathrow to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Heathrow to Washington, D.C. 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 London Heathrow Airport to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of £264). Flying from London Heathrow Airport to Washington, D.C. in April is currently the most expensive (average of £1,122). 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Alexandria

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Fly from Heathrow to Washington, D.C. on these airlines

Choose from the following airlines for your flight from Heathrow to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 10 June 2026.
Virgin Atlantic flights from London Heathrow to Washington, D.C.
British Airways flights from London Heathrow to Washington, D.C.
Finnair flights from London Heathrow to Washington, D.C.

Top 10 airlines flying from Heathrow to Washington, D.C.

Discover the top 10 airlines that operate flights from Heathrow to Washington, D.C.. 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 858,174 searches. Data last updated 10 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£332Average£560FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
TAP AIR PORTUGALCheapest£332Average£414FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£333Average£441FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapest£365Average£716FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£378Average£559FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air CanadaCheapest£400Average£573FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£404Average£600FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Virgin AtlanticCheapest£408Average£538FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£411Average£577FlexibilityNo cancel feeOn-time70%
Search British Airways flights
JetBlueCheapest£415Average£598FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Washington, D.C.?

Cheapflights makes it easy to find Heathrow to Washington, D.C. flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Washington, D.C.?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Washington, D.C. from Heathrow.

Can Cheapflights find flights from Heathrow to Washington, D.C. with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Heathrow to Washington, D.C. flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Heathrow to Washington, D.C. become cheaper?

Yes, Cheapflights offers price alerts on Heathrow to Washington, D.C. flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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