Cheap flights from London Heathrow Airport to Washington, D.C. from £286

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 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in September or February, booked 44 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

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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 27 October 2025.

Sun 7/1208:15LHR - IAD
1 stop17h 45mTAP AIR PORTUGAL
Fri 12/1222:30IAD - LHR
1 stop14h 00mTAP AIR PORTUGAL
Deal found 27/10£407
Fri 12/1212:25LHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Sat 24/117:30IAD - LHR
1 stop12h 55mTAP AIR PORTUGAL
Deal found 27/10£409
Mon 24/1108:05LHR - DCA
1 stop11h 54mJetBlue
Mon 1/1206:15DCA - LHR
1 stop9h 30mJetBlue
Deal found 25/10£414
Thu 4/1206:00LHR - IAD
1 stop14h 15mTAP AIR PORTUGAL
Fri 12/1222:30IAD - LHR
1 stop19h 10mTAP AIR PORTUGAL
Deal found 27/10£421
Mon 24/1108:05LHR - DCA
1 stop11h 54mIcelandair
Mon 1/1206:15DCA - LHR
1 stop9h 30mIcelandair
Deal found 25/10£421
Wed 19/1109:20LHR - DCA
1 stop12h 40mJetBlue
Mon 24/1117:43DCA - LHR
1 stop22h 57mJetBlue
Deal found 27/10£422
Wed 10/1209:20LHR - DCA
1 stop27h 45mIcelandair
Sun 14/1218:59DCA - LHR
1 stop30h 56mIcelandair
Deal found 27/10£428
Tue 25/1112:20LHR - DCA
1 stop15h 39mJetBlue
Tue 2/1215:40DCA - LHR
1 stop10h 15mJetBlue
Deal found 26/10£433
Mon 10/1109:20LHR - DCA
1 stop12h 40mJetBlue
Thu 12/306:05DCA - LHR
1 stop10h 40mJetBlue
Deal found 25/10£437
Tue 9/1212:20LHR - DCA
1 stop15h 38mJetBlue
Tue 16/1206:00DCA - LHR
1 stop10h 40mJetBlue
Deal found 25/10£438
Sun 14/1219:55LHR - IAD
1 stop24h 20mTAP AIR PORTUGAL
Wed 14/122:30IAD - LHR
1 stop12h 00mTAP AIR PORTUGAL
Deal found 26/10£443
Wed 3/1209:20LHR - DCA
1 stop15h 20mJetBlue
Tue 9/1213:45DCA - LHR
1 stop12h 10mJetBlue
Deal found 25/10£443

Cheap 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 27 October 2025.

Round-trip from

£403

One-way from

£286

Popular in

July

Cheapest in

September

Average price

£575

Good round-trip deal

£519 or less

Good one-way deal

£422 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 12/2-22/2
  • 2 total stops
  • 44h 05m total
  • London to Washington, D.C.
18/1
  • 18/1
  • 2 total stops
  • 28h 52m total
  • London to Washington, D.C.
Highest demand for flights based on searches. 10% potential increase in price (£49 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from London Heathrow to Washington, D.C. (WAS).
Price to beat on a one-way flight from London Heathrow to Washington, D.C. (WAS).

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 27 October 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. that are best for you.

Fly from

Heathrow

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/11

07:25-14:36

1 stop12h 11m

Washington, D.C. Reagan-National

Thu 27/11

06:15-21:40

1 stop10h 25m

£450

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 10/11

08:05-14:36

1 stop11h 31m

Washington, D.C. Reagan-National

Mon 24/11

06:15-20:45

1 stop9h 30m

£450

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/11

07:25-14:36

1 stop12h 11m

Washington, D.C. Reagan-National

Tue 25/11

06:15-21:40

1 stop10h 25m

£458

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/11

07:25-14:36

1 stop12h 11m

Washington, D.C. Reagan-National

Wed 19/11

13:35-06:55

1 stop12h 20m

£458

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 15/4

08:25-15:59

1 stop12h 34m

Washington, D.C. Reagan-National

Wed 29/4

14:59-06:30

1 stop10h 31m

£463

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/11

12:20-22:59

1 stop15h 39m

Washington, D.C. Reagan-National

Wed 26/11

06:15-21:40

1 stop10h 25m

£466

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 23/11

07:45-14:50

1 stop12h 05m

Washington, D.C. Reagan-National

Mon 8/12

13:45-06:55

1 stop12h 10m

£473

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 20/11

07:25-14:59

1 stop12h 34m

Washington, D.C. Reagan-National

Thu 4/12

06:00-21:40

1 stop10h 40m

£480

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 21/11

08:05-14:59

1 stop11h 54m

Washington, D.C. Reagan-National

Thu 4/12

06:00-21:40

1 stop10h 40m

£480

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Wed 24/12

11:45-00:35

2 stops17h 50m

Baltimore/Washington

Fri 2/1

06:00-07:50

1 stop20h 50m

£482

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 60 results
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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.

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Washington, D.C.. Price data was last updated on 24 October 2025.

The best time to book flights from London Heathrow Airport to Washington, D.C. is 44 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.

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 £349). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £513). 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 27 October 2025.

When flying from London Heathrow Airport to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 24% versus a flight at midday.

What is the cheapest day to fly from London Heathrow Airport to Washington, D.C.?

Use this chart to determine the cheapest time to fly return from Heathrow to Washington, D.C.. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Washington, D.C. flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 27 October 2025.

The most flights from LHR to WAS are scheduled on a Monday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (20 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.

Reykjavik (KEF) – chosen by Cheapflights users on 28% 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 £340.

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 Montreal (YUL) 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 Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 13m.

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 27 October 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Washington, D.C., such as Virgin Atlantic, Aer Lingus, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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!

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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!

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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!

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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!

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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!

Food

6.9

Comfort

7.3

Overall

7.5

Entertainment

7.5

Boarding

7.7

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 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 £450, JetBlue can have you in Washington, D.C. from London Heathrow Airport in 12h 11m. 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, Delta (£190), TAP AIR PORTUGAL (£356), and Icelandair (£366) offers the cheapest pricing from London Heathrow Airport to Washington, D.C.. Delta is currently priced 66% 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 £375. However, be on the lookout for offers from Icelandair and United Airlines, 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.?

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

    Consider KLM (89%), Air France (89%) or Delta (89%) 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 £1,504, our data indicates the cheapest price to be £411. The most popular route (London Heathrow - Washington, D.C. Dulles Intl), is priced around £383.

  • Where are the most common stopover locations when flying from London Heathrow Airport to Washington, D.C.?

  • What are some popular things to do or see while on a stopover in Dublin?

    Bord Gáis Energy Theatre, 3Olympia Theatre, and Dublin Castle are currently the most popular points of interest in Dublin at the moment. Those on a stopover in Dublin interested in visiting Bord Gáis Energy Theatre, 3Olympia Theatre, or Dublin Castle can do so by traveling 5.7 mi, 5.7 mi, and 5.8 mi, respectively from Dublin. Those looking to explore during their stopover in Dublin can hire a car from Dublin for about £25 per day.

  • Where are the least popular stopover locations for London Heathrow Airport to Washington, D.C. flights?

  • 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 £349). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of £513). 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
Woodbridge
Arlington
Alexandria
College Park
Tysons

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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 27 October 2025.

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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£190Average£521FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
PLAYCheapest£276Average£385FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
TAP AIR PORTUGALCheapest£356Average£494FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£366Average£513FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£384Average£621FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Aer LingusCheapest£390Average£705FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£408Average£564FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
LufthansaCheapest£423Average£639FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£425Average£648FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Scandinavian AirlinesCheapest£435Average£582FlexibilityNo cancel feeOn-time77%
Search Scandinavian 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 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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