Cheap flights from Washington, D.C. to London Heathrow Airport from £211

WAS — LHR
2 Oct — 9 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to London Heathrow are usually found in February or January, booked 86 days in advance, depart on a Monday or Tuesday and return on a Friday

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

Enter your travel dates to find the best prices.

Cheapest flights from Washington, D.C. to Heathrow

Sat 21/1119:40 -
1 stop10h 10m
Sun 29/1112:15 -
1 stop11h 25m
Deal found 31/8£505
Mon 12/1020:30 -
2 stops20h 10m
Mon 19/1006:40 -
2 stops17h 45m
Deal found 28/8£505
Fri 27/1119:40 -
1 stop10h 10m
Fri 4/1212:15 -
1 stop11h 25m
Deal found 30/8£506
Fri 27/1119:40 -
1 stop10h 10m
Sat 12/1212:15 -
1 stop11h 25m
Deal found 31/8£509
Wed 18/1119:40 -
1 stop10h 10m
Thu 26/1112:15 -
1 stop11h 25m
Deal found 30/8£510
Tue 3/1119:40 -
1 stop10h 10m
Sun 8/1120:35 -
1 stop27h 05m
Deal found 31/8£511
Sat 17/1020:30 -
1 stop10h 25m
Sun 6/1212:15 -
1 stop11h 25m
Deal found 1/9£511
Mon 12/1020:30 -
1 stop10h 25m
Sun 6/1212:15 -
1 stop11h 25m
Deal found 30/8£512
Thu 22/1023:20 -
1 stop31h 35m
Sat 5/1212:15 -
1 stop11h 25m
Deal found 30/8£513
Thu 22/1023:20 -
1 stop31h 35m
Wed 28/1020:35 -
1 stop27h 05m
Deal found 1/9£514
Tue 13/1023:20 -
1 stop31h 35m
Wed 2/1220:35 -
1 stop27h 05m
Deal found 29/8£514
Thu 8/1020:20 -
2 stops15h 40m
Sat 17/1006:40 -
2 stops15h 20m
Deal found 31/8£518

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

Round-trip from

£505

One-way from

£211

Popular in

June

Cheapest in

February

Average price

£686

Good round-trip deal

£689 or less

Good one-way deal

£339 or less
Icelandair
  • Icelandair
  • 21/11-29/11
  • 2 total stops
  • 21h 35m total
  • Washington, D.C. to London
Icelandair
  • Icelandair
  • 13/10
  • 1 total stop
  • 31h 35m total
  • Washington, D.C. to London
Highest demand for flights based on searches. 20% potential increase in price (£124 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in September 2026
Price to beat on a round-trip flight from Washington, D.C. (WAS) to London Heathrow.
Price to beat on a one-way flight from Washington, D.C. (WAS) to London Heathrow.

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Tue 1/12

19:40-10:50

1 stop10h 10m

London Heathrow

Fri 18/12

12:15-18:40

1 stop11h 25m

£512

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 28/9

20:30-20:20

1 stop18h 50m

London Heathrow

Fri 9/10

21:25-19:25

1 stop27h 00m

£621

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Fri 29/1

12:30-09:20

2 stops15h 50m

London Heathrow

Sun 7/2

18:40-17:15

1 stop27h 35m

£629

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Mon 28/9

22:05-10:40

Nonstop7h 35m

London Heathrow

Tue 6/10

09:00-19:25

1 stop15h 25m

£630

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Tue 13/10

22:10-08:35

1 stop29h 25m

London Heathrow

Tue 20/10

12:10-16:45

1 stop33h 35m

£630

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Wed 7/10

09:09-10:00

2 stops19h 51m

London Heathrow

Wed 14/10

06:50-18:13

2 stops16h 23m

£643

Washington, D.C.London

DCA Washington, D.C. Reagan-National - LHR London Heathrow

DCALHR

Washington, D.C. Reagan-National

Sun 27/9

08:25-10:25

1 stop21h 00m

London Heathrow

Tue 6/10

14:05-15:40

1 stop30h 35m

£644

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Tue 3/11

22:15-10:50

Nonstop7h 35m

London Heathrow

Thu 12/11

12:05-15:40

Nonstop8h 35m

£652

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Mon 7/12

22:15-10:50

Nonstop7h 35m

London Heathrow

Wed 9/12

16:20-20:15

Nonstop8h 55m

£652

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Tue 6/10

18:35-06:55

Nonstop7h 20m

London Heathrow

Thu 12/11

16:20-20:15

Nonstop8h 55m

£652

Flights are sorted by cheapest return flights first.

Deals found on 29/8

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

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to London Heathrow Airport

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of £506). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £964). 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 WAS to LHR?

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

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

The most flights from WAS to LHR are scheduled on a Monday (29 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (24 on average).

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

Airfare is below average for this route at the moment.
Washington, D.C. to London Heathrow Airport flights typically cost between £542 and £805 in November.
The cheapest return price found within the last 5 days was £505 on Icelandair (21 Nov–29 Nov).

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

Dublin (DUB) – chosen by Cheapflights users on 59% of one-stop itineraries from Washington, D.C. to London Heathrow Airport on Cheapflights.

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £493.

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

Flights via New York (JFK) have the shortest average one-way travel time for one-stop routes: 9h 35m.

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

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 1h 20m.

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

About 18% of weekly flights between Washington, D.C. and London have experienced delays in the past year, with the average delay time being 173 minutes.

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

Historically, flights departing at night 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?

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

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

Booking 65 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Heathrow

Get a feel of what it's like to fly with Virgin Atlantic,Aer Lingus, andAmerican Airlines from Washington, D.C. to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Overall

7.4

Boarding

7.7

Entertainment

7.5

Food

6.9

Crew

8.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

  • How long is the flight from Washington, D.C. to London Heathrow Airport?

    Icelandair, Scandinavian Airlines, and United Airlines can get you from Washington, D.C. to London Heathrow Airport in just under 7h 35m. Your travel time can differ by up to 8h 15m. The distance between Washington, D.C. and London Heathrow Airport is about 3664 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Currently priced at £440, British Airways will fly you from Washington, D.C. to London Heathrow Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and Icelandair - these airlines can fly you to your destination from £446 and £487, respectively. You may be able to fly from Washington, D.C. to London Heathrow Airport for 34% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as £212 on Virgin Atlantic. Other airlines that offer cheap prices include British Airways from £241 and United Airlines from £292 one-way.

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

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to London Heathrow Airport consider choosing SAUDIA (69%), Aer Lingus (68%) or Iberia (68%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Washington, D.C. to London Heathrow Airport is generally £584, our data shows the cheapest flight currently is £225. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay £451 for that flight.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of £506). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £964). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Hayes
Croydon
Northampton
Colchester
Eastbourne
Brentford
Barnet
Salisbury
Southall
Southend-on-Sea
Enfield
Kingston upon Thames
Watford

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Washington, D.C. to Heathrow

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£391Average£632FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£427Average£636FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£446Average£587FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
United AirlinesCheapest£489Average£717FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest£589Average£956FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

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Cheapflights helps you find that perfect flight to Heathrow from Washington, D.C. by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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