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£166+ Cheap flights to Washington, D.C.

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
— WAS
15 Jul — 22 Jul1
1 adult

Flights to Washington, D.C. in 2025

Find the latest flights to Washington, D.C. in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 July 2025.

Return from

£479

One-way from

£166

Popular in

July

Cheapest in

February

Average price

£657

Good round-trip deal

£538 or less

Good one-way deal

£589 or less
American Airlines
  • American Airlines
  • 31/8-9/9
  • Nonstop
  • 15h 35m total
  • London to Washington, D.C.
15/11
  • 15/11
  • 2 total stops
  • 43h 38m total
  • London to Washington, D.C.
Highest demand for flights based on searches. 14% potential increase in price (£66 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Average for return flights in July 2025
Price to beat on a round-trip flight from London to Washington, D.C..
Price to beat on a one-way flight from London to Washington, D.C..

Find flight deals to Washington, D.C.

Cheapest flights to Washington, D.C.
Explore the most affordable flight options available to Washington, D.C.. Find the lowest fares based on data from user searches, with prices last updated on 10 July 2025.

Mon 13/1007:05LHR - IAD
2 stops41h 54mScandinavian Airlines
Sat 18/1022:05IAD - LHR
1 stop12h 55mScandinavian Airlines
Deal found 9/7£478
Sat 6/1213:25LHR - DCA
1 stop13h 31mUnited Airlines
Fri 19/1206:00DCA - LHR
1 stop20h 10mUnited Airlines
Deal found 9/7£478
Thu 4/908:40LHR - IAD
1 stop11h 55mKLM
Wed 10/917:25IAD - LHR
1 stop12h 20mKLM
Deal found 9/7£479
Thu 7/813:00LGW - IAD
1 stop11h 20mIcelandair
Sat 16/820:30IAD - LGW
1 stop10h 15mIcelandair
Deal found 9/7£479
Thu 14/811:55LHR - DCA
1 stop16h 04mJetBlue
Thu 28/806:30DCA - LHR
1 stop9h 15mJetBlue
Deal found 8/7£479
Thu 9/1009:25LCY - IAD
1 stop11h 50mSWISS
Sun 19/1020:45IAD - LCY
1 stop10h 45mSWISS
Deal found 8/7£479
Fri 8/812:35LHR - IAD
Nonstop8h 25mAir France
Sat 16/817:50IAD - LHR
Nonstop7h 30mAir France
Deal found 8/7£480
Wed 27/810:35LGW - IAD
1 stop15h 15mTAP AIR PORTUGAL
Tue 2/917:00IAD - LGW
2 stops13h 20mTAP AIR PORTUGAL
Deal found 9/7£481
Sat 13/1219:55LHR - IAD
1 stop30h 05mTAP AIR PORTUGAL
Sat 27/1217:30IAD - LHR
1 stop20h 25mTAP AIR PORTUGAL
Deal found 9/7£481
Thu 21/807:35STN - IAD
2 stops34h 55mMultiple Airlines
Thu 4/915:25IAD - STN
2 stops21h 00mMultiple Airlines
Deal found 9/7£481
Mon 17/1107:50LHR - IAD
1 stop12h 45mAer Lingus
Wed 19/1121:00IAD - LHR
1 stop9h 25mAer Lingus
Deal found 9/7£482
Fri 12/908:40LHR - IAD
2 stops34h 45mSWISS
Fri 19/917:25IAD - LHR
2 stops23h 20mSWISS
Deal found 9/7£483

Cheapflights Fare Finder

Locate flights to Washington, D.C. that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 July 2025.
Use the filters below to find and compare flights to Washington, D.C. that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 13/10

07:05-19:59

2 stops41h 54m

Washington, D.C. Dulles Intl

Sat 18/10

22:05-16:00

1 stop12h 55m

£478

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 6/12

13:25-21:56

1 stop13h 31m

Washington, D.C. Reagan-National

Fri 19/12

06:00-07:10

1 stop20h 10m

£478

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 31/8

17:05-20:15

Nonstop8h 10m

Washington, D.C. Dulles Intl

Tue 9/9

17:50-06:15

Nonstop7h 25m

£479

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 7/8

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Sat 16/8

20:30-11:45

1 stop10h 15m

£479

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 14/8

11:55-22:59

1 stop16h 04m

Washington, D.C. Reagan-National

Thu 28/8

06:30-20:45

1 stop9h 15m

£479

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Thu 9/10

09:25-16:15

1 stop11h 50m

Washington, D.C. Dulles Intl

Tue 14/10

20:45-12:30

1 stop10h 45m

£479

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 8/8

12:35-16:00

Nonstop8h 25m

Washington, D.C. Dulles Intl

Sat 16/8

17:50-06:20

Nonstop7h 30m

£480

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 11/10

06:35-22:10

2 stops20h 35m

Washington, D.C. Dulles Intl

Sun 19/10

23:15-19:55

2 stops15h 40m

£480

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 27/8

10:35-20:50

1 stop15h 15m

Washington, D.C. Dulles Intl

Tue 2/9

17:00-11:20

2 stops13h 20m

£481

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 13/12

19:55-21:00

1 stop30h 05m

Washington, D.C. Dulles Intl

Sat 27/12

17:30-18:55

1 stop20h 25m

£481

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Showing 1-10 of 59 results
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Best time to book a flight to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to 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 to Washington, D.C.

When is the best time to book a flight to Washington, D.C.?

Use this chart to determine the optimal time to book a return flight from London to Washington, D.C.. Price data was last updated on 27 June 2025.

The best time to book flights to Washington, D.C. is 84 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.

How long is the flight to Washington, D.C.?

On average, a flight from London to Washington, D.C. takes 12 hours 22 minutes. Flights to Washington, D.C. from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Washington, D.C.?

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

Users looking for the lowest fares to Washington, D.C. should consider flying on Tuesday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Thursday at midday, when prices are usually at their highest.

Weekly flight availability to Washington, D.C.

The most flights from London to Washington, D.C. are scheduled on a Monday (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 are the cheapest airlines that fly to Washington, D.C.?

The cheapest airlines flying from London to Washington, D.C. are Delta, PLAY and Icelandair.

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 10 July 2025.
See what other customers who have flown with Delta, KLM, andAustrian Airlines to the United States have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

FAQs about flying to Washington, D.C.

  • Can I find cheaper flights to Washington, D.C. if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Washington, D.C. on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Washington, D.C.?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to Washington, D.C..

  • What is the cheapest airport to fly to in Washington, D.C.?

    Baltimore/Washington is currently the cheapest airport to fly to in Washington, D.C.. One-way flights to Baltimore/Washington typically cost £43, while return flights cost around £50.

  • How much is a return flight to Washington, D.C.?

    A return flight to Washington, D.C. will typically cost around £2,681, however they can be found for as little as £184.

  • Where does the fastest flight to Washington, D.C. depart from?

    For those looking to save time traveling to Washington, D.C., London offers the quickest one-way flight (8 hours 0 minutes).

  • Does Washington, D.C. Dulles Intl have car hire?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 mi away from Washington, D.C. Dulles Intl).

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
Arlington
Woodbridge
College Park
Laurel
Tysons

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