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Cheap flights from District of Columbia to London Heathrow Airport from £189

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 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
31 Mar — 7 Apr1
1 adult

Cheap flight deals from District of Columbia to Heathrow

Keep the following information in mind while searching for District of Columbia to Heathrow flight deals. Data was last updated 26 March 2025.

Round-trip from

£455

One-way from

£189

Popular in

June

Cheapest in

January

Average price

£520

Good round-trip deal

£508 or less

Good one-way deal

£339 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 21/4-29/4
  • 3 total stops
  • 36h 29m total
  • District of Columbia to London
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TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 20/7
  • 1 total stop
  • 18h 40m total
  • District of Columbia to London
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£76 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from District of Columbia to London Heathrow.
Search Deals
Price to beat on a one-way flight from District of Columbia to London Heathrow.
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Find flight deals from District of Columbia to Heathrow

Cheapest flights from District of Columbia to Heathrow
Explore the most affordable flight options available from District of Columbia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2025.

Mon 21/422:05IAD - LHR
1 stop18h 35mScandinavian Airlines
Tue 29/407:05LHR - IAD
2 stops17h 54mScandinavian Airlines
Deal found 25/3£455
Tue 25/312:29DCA - LHR
1 stop13h 26mJetBlue
Sun 30/308:15LHR - DCA
1 stop17h 44mJetBlue
Deal found 25/3£456
Tue 22/415:55IAD - LHR
1 stop9h 35mMultiple Airlines
Tue 29/419:30LHR - IAD
1 stop24h 05mMultiple Airlines
Deal found 24/3£458
Wed 2/420:30IAD - LHR
1 stop10h 25mIcelandair
Wed 23/421:25LHR - IAD
1 stop26h 55mIcelandair
Deal found 25/3£461
Mon 21/407:00DCA - LHR
1 stop21h 30mIcelandair
Fri 25/411:55LHR - DCA
1 stop14h 04mIcelandair
Deal found 25/3£475
Mon 21/420:25IAD - LHR
1 stop9h 45mAer Lingus
Tue 29/409:50LHR - IAD
1 stop11h 00mAer Lingus
Deal found 25/3£477
Sun 30/322:20IAD - LHR
1 stop15h 30mTAP AIR PORTUGAL
Thu 10/408:00LHR - IAD
1 stop17h 50mTAP AIR PORTUGAL
Deal found 24/3£479
Sun 4/518:30IAD - LHR
Nonstop7h 25mUnited Airlines
Tue 13/513:45LHR - IAD
1 stop31h 30mUnited Airlines
Deal found 24/3£480
Fri 3/1022:45IAD - LHR
Nonstop7h 20mIberia
Tue 7/1006:10LHR - IAD
1 stop13h 50mIberia
Deal found 24/3£485
Wed 16/417:50IAD - LHR
Nonstop7h 30mDelta
Tue 22/406:15LHR - IAD
1 stop15h 05mDelta
Deal found 24/3£488
Sun 4/511:00DCA - LHR
1 stop17h 35mUnited Airlines
Tue 13/514:05LHR - DCA
2 stops27h 31mUnited Airlines
Deal found 24/3£489
Mon 21/417:50IAD - LHR
Nonstop7h 30mVirgin Atlantic
Tue 29/420:55LHR - IAD
1 stop23h 40mVirgin Atlantic
Deal found 25/3£490

Cheapflights Fare Finder

Customise your flight search to find flights from District of Columbia 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 26 March 2025.
Use the filters below to find and compare flights from District of Columbia to London Heathrow Airport that are best for you.

Fly from

District of Columbia

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 21/4

22:05-21:40

1 stop18h 35m

London Heathrow

Tue 29/4

07:05-19:59

2 stops17h 54m

£455

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 29/4

13:00-06:30

1 stop12h 30m

London Heathrow

Wed 21/5

08:25-18:05

1 stop14h 40m

£458

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 22/4

15:55-06:30

1 stop9h 35m

London Heathrow

Tue 29/4

19:30-14:35

1 stop24h 05m

£458

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 29/4

20:30-20:20

1 stop18h 50m

London Heathrow

Tue 20/5

13:05-19:20

1 stop11h 15m

£471

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 21/4

07:00-09:30

1 stop21h 30m

London Heathrow

Fri 25/4

11:55-20:59

1 stop14h 04m

£475

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 21/4

20:25-11:10

1 stop9h 45m

London Heathrow

Tue 29/4

09:50-15:50

1 stop11h 00m

£477

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/5

22:15-10:40

Nonstop7h 25m

London Heathrow

Mon 12/5

12:10-16:15

1 stop33h 05m

£480

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 16/4

17:50-06:20

Nonstop7h 30m

London Heathrow

Tue 22/4

06:15-16:20

1 stop15h 05m

£488

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 4/5

11:00-09:35

1 stop17h 35m

London Heathrow

Tue 13/5

14:05-12:36

2 stops27h 31m

£489

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 21/4

17:50-06:20

Nonstop7h 30m

London Heathrow

Tue 29/4

20:55-15:35

1 stop23h 40m

£490

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 50 results
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Best time to book a flight from District of Columbia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from District of Columbia 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 District of Columbia to London Heathrow Airport

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

Currently, January is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of £112). Flying from District of Columbia to London Heathrow Airport in August is currently the most expensive (average of £164). 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 DC to LHR?

Find hourly flight availability from District of Columbia 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 26 March 2025.

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

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 26 March 2025.
Read through reviews of airlines operating flights from District of Columbia to London, such as Delta, KLM and Finnair. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,891 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,266 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,423 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from District of Columbia to London Heathrow Airport one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £189. Users have also found prices from £191 and £192 on Icelandair and JetBlue, respectively.

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

    Before booking your flight to London Heathrow Airport from District of Columbia, check out the most reliable airlines to get you to your destination on time: KLM (94%), Delta (94%), Air France( 93%).

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

    The cheapest flight price from District of Columbia to London Heathrow Airport is £286. On average you can expect to pay £1,572. The most popular route, (Washington, D.C. Dulles Intl - London Heathrow), can usually be booked for £390.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from District of Columbia to London Heathrow Airport (average of £112). Flying from District of Columbia to London Heathrow Airport in August is currently the most expensive (average of £164). 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 District of Columbia?

Book flights to District of Columbia if you plan to visit one of these locations
Hounslow
Deal
Milton Keynes
Gatwick
Croydon
Luton
Slough
Eastbourne
Wembley
Northampton
Swindon
Hayes
Ilford
Crawley
Southend-on-Sea
Winchester
Maidstone
Ipswich
Watford
Southall

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for District of Columbia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from District of Columbia to Heathrow

Discover the top 8 airlines that operate flights from District of Columbia 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 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£370Average£569FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
IberiaCheapest£430Average£593FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£441Average£561FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£441Average£610FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£451Average£685FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£480Average£581FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£511Average£761FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£512Average£721FlexibilityNo 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 District of Columbia to Heathrow?

Cheapflights helps you search for flights from District of Columbia to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from District of Columbia to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from District of Columbia to Heathrow with no change fees?

Yes, we can. To see specific flights from District of Columbia to Heathrow 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 District of Columbia to Heathrow become cheaper?

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

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