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Cheap flights from Washington, D.C. to London Heathrow Airport from £190

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Washington, D.C. to London Heathrow are usually found in September or August, booked 63 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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Cheapest flights from Washington, D.C. to Heathrow
Explore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 November 2025.

Sun 9/1122:20IAD - LHR
Nonstop7h 30mVirgin Atlantic
Tue 18/1116:50LHR - IAD
Nonstop8h 40mVirgin Atlantic
Deal found 2/11£427
Wed 19/1112:11IAD - LHR
2 stops16h 09mScandinavian Airlines
Wed 26/1119:50LHR - IAD
2 stops26h 25mScandinavian Airlines
Deal found 1/11£428
Mon 24/1112:11IAD - LHR
2 stops16h 09mScandinavian Airlines
Tue 2/1219:50LHR - IAD
2 stops26h 25mScandinavian Airlines
Deal found 1/11£429
Thu 11/1217:30IAD - LHR
1 stop19h 00mTAP AIR PORTUGAL
Tue 16/1206:00LHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Deal found 2/11£430
Mon 1/1220:30IAD - LHR
2 stops14h 55mScandinavian Airlines
Mon 8/1206:40LHR - IAD
1 stop15h 35mScandinavian Airlines
Deal found 3/11£430
Wed 12/1119:40IAD - LHR
1 stop18h 50mIcelandair
Sun 23/1120:35LHR - IAD
1 stop26h 55mIcelandair
Deal found 1/11£432
Sun 9/1117:03DCA - LHR
1 stop10h 02mVirgin Atlantic
Tue 18/1116:35LHR - DCA
1 stop11h 21mVirgin Atlantic
Deal found 2/11£433
Tue 9/1219:40IAD - LHR
1 stop10h 10mIcelandair
Wed 17/1220:35LHR - IAD
1 stop26h 55mIcelandair
Deal found 2/11£433
Tue 2/1212:19IAD - LHR
2 stops16h 01mScandinavian Airlines
Mon 8/1206:40LHR - IAD
1 stop15h 35mScandinavian Airlines
Deal found 2/11£433
Wed 10/1218:20IAD - LHR
Nonstop7h 10mFinnair
Tue 16/1212:10LHR - IAD
Nonstop8h 25mFinnair
Deal found 1/11£435
Tue 25/1112:11IAD - LHR
2 stops22h 49mScandinavian Airlines
Tue 2/1219:50LHR - IAD
2 stops26h 25mScandinavian Airlines
Deal found 2/11£436
Tue 2/1217:45DCA - LHR
1 stop10h 55mIberia
Tue 9/1211:25LHR - DCA
2 stops36h 32mIberia
Deal found 1/11£439

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Heathrow (LHR). 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 3 November 2025.

Round-trip from

£427

One-way from

£190

Popular in

June

Cheapest in

September

Average price

£554

Good round-trip deal

£482 or less

Good one-way deal

£292 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 8/4-21/4
  • 3 total stops
  • 40h 40m total
  • Washington, D.C. to London
Search Deals
1/12
  • 1/12
  • 2 total stops
  • 23h 05m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£71 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington, D.C. 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 858,174 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Washington, D.C. to London Heathrow Airport that are best for you.

Fly from

Washington, D.C.

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 23/11

21:45-10:00

Nonstop7h 15m

London Heathrow

Tue 13/1

16:25-19:55

Nonstop8h 30m

£442

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 24/11

12:37-07:50

1 stop14h 13m

London Heathrow

Fri 12/12

16:50-20:30

Nonstop8h 40m

£446

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 21/1

22:20-10:50

Nonstop7h 30m

London Heathrow

Sun 25/1

08:40-16:05

1 stop12h 25m

£446

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 3/12

12:19-08:45

2 stops15h 26m

London Heathrow

Wed 10/12

11:30-23:03

2 stops16h 33m

£452

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 19/11

18:50-13:45

1 stop13h 55m

London Heathrow

Fri 28/11

08:55-16:35

1 stop12h 40m

£452

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 26/11

17:30-08:45

1 stop10h 15m

London Heathrow

Tue 2/12

09:40-17:05

1 stop12h 25m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 2/12

17:02-08:05

1 stop10h 03m

London Heathrow

Thu 11/12

16:10-22:57

1 stop11h 47m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 26/11

13:15-06:50

1 stop12h 35m

London Heathrow

Fri 5/12

13:05-19:46

1 stop11h 41m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 18/11

16:40-07:50

1 stop10h 10m

London Heathrow

Fri 9/1

13:05-19:52

1 stop11h 47m

£454

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 30/12

14:25-06:50

1 stop11h 25m

London Heathrow

Fri 9/1

09:40-16:07

1 stop11h 27m

£454

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 60 results
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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
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 Washington, D.C. to London Heathrow Airport

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

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to Heathrow. Price data was last updated on 31 October 2025.

Booking 63 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.

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of £24). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £569). 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?

Find hourly flight availability from Washington, D.C. 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 3 November 2025.

It’s typically best to fly out from Washington, D.C. to London Heathrow Airport in the morning. Doing so could potentially save you 27% on the flight price compared to flying at midday, which is usually more expensive.

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

Explore weekly flight availability from Washington, D.C. 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 3 November 2025.

The most flights from WAS to LHR are scheduled on a Sunday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).

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

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 52% 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?

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

Lisbon (LIS) is the most affordable one-stop option, with an average return flight price of £341.

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

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

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 9h 40m.

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

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

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average stopover time of 1h 44m.

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 3 November 2025.
Get a feel of what it's like to fly with Virgin Atlantic, Icelandair, andBritish Airways 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.
Virgin Atlantic
7.5
Good
671 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

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!
Virgin Atlantic
7.5
Good
671 reviews
Virgin Atlantic
7.5
Good
671 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

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!
Icelandair
7.1
Good
568 reviews
Virgin Atlantic
7.5
Good
671 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

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!
British Airways
6.7
Okay
7,494 reviews
Virgin Atlantic
7.5
Good
671 reviews
Check prices

Entertainment

7.5

Overall

7.5

Food

6.9

Boarding

7.7

Comfort

7.3

Crew

8.1

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

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

    British Airways, Delta, and Virgin Atlantic can get you from Washington, D.C. to London Heathrow Airport in just under 7h 15m. Your travel time can differ by up to 8h 11m. 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 £315, Lufthansa will fly you from Washington, D.C. to London Heathrow Airport and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Virgin Atlantic - these airlines can fly you to your destination from £375 and £389, respectively. You may be able to fly from Washington, D.C. to London Heathrow Airport for 45% 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 £211 on JetBlue. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £252 and Iberia from £263 one-way.

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

    Most travelers choose Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow when deciding on the best route 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 KLM (88%), Aer Lingus (85%) or American Airlines (84%) 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 £463, our data shows the cheapest flight currently is £276. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay £319 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, March is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of £24). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £569). 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
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from Washington, D.C. to Heathrow

Discover the top 9 airlines that operate flights from Washington, D.C. 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 858,174 searches. Data last updated 3 November 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£315Average£545FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£364Average£549FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£389Average£646FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£393Average£597FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£405Average£537FlexibilityNo cancel feeOn-time77%
Search Air France flights
IberiaCheapest£467Average£528FlexibilityNo cancel feeOn-time77%
Search Iberia flights
KLMCheapest£515Average£661FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£521Average£734FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£534Average£638FlexibilityNo cancel feeOn-time69%
Search United Airlines 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 Washington, D.C. to Heathrow?

When you search for this flight from Washington, D.C. to Heathrow, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

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!

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

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.

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

Not ready to book yet? You can track prices for flights from Washington, D.C. to Heathrow on Cheapflights with our Price Alert feature and get notified when better prices are available.

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