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Cheap flights from London Heathrow Airport to District of Columbia from £327

LHR — IAD
17 Sep — 24 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to District of Columbia

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to District of Columbia

Wed 16/1207:30 -
1 stop12h 05m
Sun 27/1222:44 -
1 stop17h 36m
Deal found 14/8£428
Tue 1/914:05 -
1 stop12h 43m
Sat 31/1012:55 -
1 stop13h 35m
Deal found 14/8£428
Tue 22/908:30 -
1 stop11h 40m
Wed 7/1018:35 -
Nonstop7h 20m
Deal found 14/8£429
Mon 7/906:55 -
1 stop13h 10m
Sat 12/922:10 -
Nonstop7h 30m
Deal found 17/8£430
Fri 4/1209:00 -
2 stops15h 58m
Mon 7/1212:55 -
1 stop12h 35m
Deal found 14/8£430
Sat 12/908:30 -
1 stop11h 40m
Mon 28/918:35 -
Nonstop7h 20m
Deal found 15/8£431
Thu 3/914:05 -
1 stop12h 43m
Sun 6/916:20 -
1 stop12h 40m
Deal found 14/8£431
Thu 10/907:30 -
1 stop12h 40m
Wed 23/922:05 -
Nonstop7h 35m
Deal found 14/8£431
Sun 13/914:05 -
1 stop25h 15m
Sun 20/916:20 -
1 stop12h 40m
Deal found 16/8£431
Thu 10/908:30 -
1 stop11h 40m
Thu 1/1015:47 -
1 stop11h 43m
Deal found 17/8£432
Mon 7/906:50 -
1 stop11h 40m
Mon 14/906:15 -
1 stop9h 25m
Deal found 16/8£433
Sun 22/1109:00 -
2 stops15h 58m
Sun 29/1116:00 -
1 stop10h 10m
Deal found 14/8£433

Find flight deals from Heathrow to District of Columbia

Round-trip from

£428

One-way from

£327

Popular in

June

Cheapest in

February

Average price

£536

Good round-trip deal

£518 or less

Good one-way deal

£535 or less
United Airlines
  • United Airlines
  • 16/12-29/12
  • 2 total stops
  • 23h 30m total
  • London to District of Columbia
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Icelandair
  • Icelandair
  • 21/10
  • 1 total stop
  • 14h 10m total
  • London to District of Columbia
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Highest demand for flights based on searches. 9% potential increase in price (£39 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from London Heathrow to District of Columbia.
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Price to beat on a one-way flight from London Heathrow to District of Columbia.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from London Heathrow Airport to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sun 27/9

07:30-15:10

1 stop12h 40m

Washington, D.C. Dulles Intl

Sun 4/10

22:05-10:40

Nonstop7h 35m

£430

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 2/9

10:50-19:25

1 stop13h 35m

Washington, D.C. Dulles Intl

Sun 6/9

08:35-08:20

1 stop18h 45m

£430

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Mon 12/10

09:30-16:05

1 stop11h 35m

Washington, D.C. Dulles Intl

Mon 11/1

12:35-07:10

2 stops13h 35m

£431

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Wed 3/2

09:05-14:10

1 stop34h 05m

Washington, D.C. Dulles Intl

Fri 12/2

22:30-10:50

Nonstop7h 20m

£433

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Tue 22/9

07:00-14:15

1 stop12h 15m

Washington, D.C. Dulles Intl

Wed 7/10

08:33-06:30

2 stops16h 57m

£440
Fastest return journey

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Sat 26/9

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Tue 29/9

18:35-06:55

Nonstop7h 20m

£453

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Mon 28/9

16:40-20:20

Nonstop8h 40m

Washington, D.C. Dulles Intl

Mon 5/10

18:35-06:55

Nonstop7h 20m

£453

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Thu 10/9

12:15-15:30

Nonstop8h 15m

Washington, D.C. Dulles Intl

Wed 16/9

22:05-10:40

Nonstop7h 35m

£454

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Thu 12/11

16:20-20:15

Nonstop8h 55m

Washington, D.C. Dulles Intl

Sun 15/11

18:20-06:40

Nonstop7h 20m

£454

LondonWashington, D.C.

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

LHRIAD

London Heathrow

Thu 29/10

16:20-21:15

Nonstop8h 55m

Washington, D.C. Dulles Intl

Thu 5/11

22:15-10:50

Nonstop7h 35m

£454

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Showing 1-10 of 46 resultsSorted by cheapest first
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Best time to book a flight from Heathrow to District of Columbia

Have a flexible travel schedule? Discover the best time to fly to District of Columbia from Heathrow with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to District of Columbia

What is the cheapest month to book a flight from London Heathrow Airport to District of Columbia?

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to District of Columbia (average of £470). Flying from London Heathrow Airport to District of Columbia in July is currently the most expensive (average of £575). 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 DC?

When flying from London Heathrow Airport to District of Columbia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London Heathrow Airport to District of Columbia

The most flights from LHR to USDC 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 London Heathrow Airport to District of Columbia?

Airfare is below average for this route at the moment.
London Heathrow Airport to District of Columbia flights typically cost between £525 and £680 in December.
The cheapest return price found within the last 5 days was £428 on United Airlines (16 Dec–29 Dec).

How far ahead should I book a flight from London Heathrow Airport to District of Columbia?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to District of Columbia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing District of Columbia

Read reviews from past customers who have flown with United Airlines,Virgin Atlantic, andAer Lingus from London Heathrow Airport to District of Columbia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
10,103 reviews
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Virgin Atlantic
7.4
Good
695 reviews
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.3
Good
1,708 reviews
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
8,199 reviews
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
8,177 reviews
United Airlines
7.4
Good
10,103 reviews
Check prices

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

  • How long is the flight from London Heathrow Airport to District of Columbia?

    Departing from London Heathrow Airport to District of Columbia will take you 12h 30m. The distance between London Heathrow Airport and District of Columbia is about 3652 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 to fly from London Heathrow Airport to District of Columbia one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £278. Users have also found prices from £291 and £342 on Icelandair and British Airways, respectively.

  • What are the most reliable airlines from London Heathrow Airport to District of Columbia?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to District of Columbia on time: Air Canada (86%), Austrian Airlines (86%), Copa Airlines (86%).

  • What are the cheapest flights from London Heathrow Airport to District of Columbia?

    On average you can expect to pay £1,455 for a flight from London Heathrow Airport to District of Columbia. The cheapest flight overall is £435 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at £348.

  • Can I find deals for flights from Heathrow to District of Columbia that include hotel bookings?

    Yes. In addition to deals on Heathrow to District of Columbia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to District of Columbia?

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

  • Can I find deals for business class flights from Heathrow to District of Columbia?

    Yes. Cheapflights offers flight deals from Heathrow to District of Columbia 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 District of Columbia?

    Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to District of Columbia (average of £470). Flying from London Heathrow Airport to District of Columbia in July is currently the most expensive (average of £575). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Heathrow to District of Columbia

Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Gatwick to Newark flights
Heathrow to Orlando flights
Heathrow to Miami flights
Luton to John F Kennedy Intl flights
Heathrow to Los Angeles flights
Gatwick to LaGuardia flights
Stansted to Newark flights
London City to Newark flights
Heathrow to Dallas/Fort Worth flights
Luton to Newark flights
Heathrow to Boston flights
Heathrow to Las Vegas flights
Gatwick to Orlando flights
Heathrow to San Francisco flights
Heathrow to Dulles Intl flights
Stansted to Orlando flights
Gatwick to Miami flights
Heathrow to O'Hare Intl flights
London City to Miami flights
Heathrow to Baltimore flights
Gatwick to Los Angeles flights
Heathrow to Hobby flights
Stansted to Miami flights
London City to Orlando flights
London City to Los Angeles flights
Stansted to Los Angeles flights
Heathrow to Tampa flights
Heathrow to Seattle flights
Heathrow to Atlanta flights
Luton to Miami flights
Gatwick to Boston flights
Heathrow to George Bush Intcntl flights
Heathrow to Ontario flights
Luton to Orlando flights
London City to Boston flights
Gatwick to Las Vegas flights
Gatwick to Dallas/Fort Worth flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
Luton to Los Angeles flights
Heathrow to Austin flights
Heathrow to Sky Harbor Intl flights
Gatwick to San Francisco flights
Stansted to Dulles Intl flights

Top 10 airlines flying from Heathrow to District of Columbia

AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£321Average£425FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£325Average£520FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£360Average£591FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£377Average£562FlexibilityNo cancel feeOn-time75%
Search KLM flights
TAP AIR PORTUGALCheapest£380Average£447FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapest£400Average£541FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£402Average£546FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£402Average£536FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air FranceCheapest£404Average£643FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£406Average£473FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from Heathrow to District of Columbia?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Heathrow to District of Columbia. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to District of Columbia?

Cheapflights helps you find that perfect flight to District of Columbia from Heathrow 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 Heathrow to District of Columbia with no change fees?

Yes, we can. To see specific flights from Heathrow to District of Columbia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Heathrow to District of Columbia become cheaper?

Yes! Start tracking prices for Heathrow to District of Columbia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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