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Cheap flights from Washington, D.C. to London Heathrow Airport from £182

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 28/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
16 Nov — 23 Nov1
1 adult
1 adult, Economy

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 17 October 2025.

Sun 19/1020:25IAD - LHR
1 stop11h 15mAer Lingus
Mon 27/1008:50LHR - IAD
1 stop11h 45mAer Lingus
Deal found 16/10£416
Sun 19/1018:45IAD - LHR
Nonstop7h 30mVirgin Atlantic
Tue 28/1010:00LHR - IAD
1 stop11h 05mVirgin Atlantic
Deal found 16/10£417
Sun 19/1018:45IAD - LHR
Nonstop7h 30mVirgin Atlantic
Tue 4/1111:30LHR - IAD
1 stop12h 45mVirgin Atlantic
Deal found 15/10£418
Tue 28/1018:05IAD - LHR
1 stop10h 00mAer Lingus
Tue 11/1108:50LHR - IAD
1 stop11h 45mAer Lingus
Deal found 16/10£418
Sun 9/1121:00IAD - LHR
1 stop9h 25mAer Lingus
Wed 12/1112:10LHR - IAD
1 stop12h 20mAer Lingus
Deal found 17/10£419
Fri 14/1119:40IAD - LHR
1 stop10h 10mIcelandair
Thu 27/1112:15LHR - IAD
1 stop11h 15mIcelandair
Deal found 16/10£420
Mon 24/1122:20IAD - LHR
Nonstop7h 30mVirgin Atlantic
Wed 10/1209:00LHR - IAD
1 stop12h 35mVirgin Atlantic
Deal found 16/10£421
Thu 11/1217:30IAD - LHR
1 stop19h 00mTAP AIR PORTUGAL
Fri 26/1212:25LHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Deal found 16/10£423
Mon 8/1220:30IAD - LHR
2 stops20h 05mScandinavian Airlines
Sun 14/1206:40LHR - IAD
2 stops39h 35mScandinavian Airlines
Deal found 17/10£424
Sun 19/1017:00DCA - LHR
1 stop10h 55mVirgin Atlantic
Tue 28/1009:40LHR - DCA
1 stop11h 30mVirgin Atlantic
Deal found 16/10£424
Mon 17/1112:11IAD - LHR
2 stops22h 49mScandinavian Airlines
Sat 22/1106:40LHR - IAD
1 stop17h 10mScandinavian Airlines
Deal found 16/10£424
Sun 19/1009:40DCA - LHR
1 stop15h 50mAir Canada
Tue 4/1106:50LHR - DCA
2 stops13h 41mAir Canada
Deal found 16/10£429

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 17 October 2025.

Round-trip from

£416

One-way from

£182

Popular in

June

Cheapest in

September

Average price

£529

Good round-trip deal

£447 or less

Good one-way deal

£280 or less
Aer Lingus
  • Aer Lingus
  • 27/10-6/11
  • 2 total stops
  • 22h 20m total
  • Washington, D.C. to London
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 28/11
  • 1 total stop
  • 14h 00m total
  • Washington, D.C. to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£69 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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 17 October 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

Mon 8/12

22:20-10:50

Nonstop7h 30m

London Heathrow

Fri 30/1

06:20-16:35

1 stop15h 15m

£430

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 26/11

18:20-06:30

Nonstop7h 10m

London Heathrow

Wed 3/12

16:25-19:55

Nonstop8h 30m

£435

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 14/1

22:20-10:50

Nonstop7h 30m

London Heathrow

Wed 21/1

06:20-16:35

1 stop15h 15m

£436

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 19/11

14:16-07:20

1 stop12h 04m

London Heathrow

Thu 27/11

12:10-15:35

Nonstop8h 25m

£439

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 19/11

17:03-08:45

1 stop10h 42m

London Heathrow

Thu 27/11

16:50-20:30

Nonstop8h 40m

£439

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 3/12

10:08-06:25

1 stop15h 17m

London Heathrow

Thu 18/12

16:50-20:30

Nonstop8h 40m

£439

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 29/12

11:40-06:50

1 stop14h 10m

London Heathrow

Tue 13/1

11:30-22:56

2 stops16h 26m

£441

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 11/11

16:10-09:00

1 stop11h 50m

London Heathrow

Thu 27/11

08:55-21:15

2 stops17h 20m

£441

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Tue 27/1

20:35-08:40

Nonstop7h 05m

London Heathrow

Fri 6/2

15:25-18:45

Nonstop8h 20m

£442

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Tue 2/12

12:19-07:50

2 stops14h 31m

London Heathrow

Tue 9/12

11:30-23:03

2 stops16h 33m

£444

Flights are sorted by cheapest return flights first.

Deals found on 16/10

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 10 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 £23). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £557). 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 17 October 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 8% 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 17 October 2025.

The most flights from WAS to LHR are scheduled on a Wednesday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 on average).

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 £334.

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 Philadelphia (PHL) have the shortest average one-way travel time for one-stop routes: 8h 50m.

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 17 October 2025.
Get a feel of what it's like to fly with Virgin Atlantic, Icelandair, andIberia 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
670 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Overall

7.5

Food

6.9

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

Crew

8.1

Boarding

7.7

Entertainment

7.5

Overall

7.5

Food

6.9

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!
Icelandair
7.0
Good
556 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Overall

7.5

Food

6.9

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!
Iberia
7.0
Good
2,995 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Overall

7.5

Food

6.9

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!
British Airways
6.7
Okay
7,459 reviews
Virgin Atlantic
7.5
Good
670 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.5

Overall

7.5

Food

6.9

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

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?

    Virgin Atlantic, British Airways, and Delta can get you from Washington, D.C. to London Heathrow Airport in just under 7h 10m. Your travel time will be generally consistent. The distance between Washington, D.C. and London Heathrow Airport is about 3664 mi. Most flights are nonstop.

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

    Currently priced at £309, 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 £368 and £381, 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 £206 on JetBlue. Other airlines that offer cheap prices include Icelandair from £241 and TAP AIR PORTUGAL from £245 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 American Airlines (86%), British Airways (86%) or Aer Lingus (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 £459, our data shows the cheapest flight currently is £265. When looking at the most popular route, (Washington, D.C. Dulles Intl - London Heathrow), you can expect to pay £310 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 £23). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of £557). 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
Wembley
Deal
Ilford
Crawley
Hayes
Watford
Winchester
Swindon
Chichester
Romford
Ipswich
Brentford
Dartford

Browse thousands of different options on Cheapflights for your next trip

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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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£309Average£524FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£368Average£538FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£381Average£633FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£385Average£579FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£397Average£536FlexibilityNo cancel feeOn-time77%
Search Air France flights
IberiaCheapest£457Average£496FlexibilityNo cancel feeOn-time77%
Search Iberia flights
KLMCheapest£504Average£647FlexibilityNo cancel feeOn-time75%
Search KLM flights
American AirlinesCheapest£513Average£719FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£523Average£625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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