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

There are many flights that can get you from United Kingdom to Washington, D.C. in 8h 25m. Fly via Austrian Airlines, United Airlines, or Virgin Atlantic to get the fastest option. The distance between United Kingdom and Washington, D.C. is about 3664 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines to fly from United Kingdom to Washington, D.C. one-way?

The cheapest airlines for a one-way flight from United Kingdom to Washington, D.C. are Virgin Atlantic ($334), Icelandair ($407), and JetBlue ($411).

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from United Kingdom to Washington, D.C.?

Most travelers choose London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National when deciding on the best route from United Kingdom to Washington, D.C..

What are the cheapest flights from United Kingdom to Washington, D.C.?

On average you can expect to pay $2,051 for a flight from United Kingdom to Washington, D.C.. The cheapest flight overall is $465 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $430.

What are the most reliable airlines from United Kingdom to Washington, D.C.?

No one likes to see their flight delayed. When booking a flight from United Kingdom to Washington, D.C. consider choosing Air Canada (78%), Austrian Airlines (78%) or Copa Airlines (78%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from United Kingdom to Washington, D.C.?

Before booking your flight from United Kingdom to Washington, D.C. check out the most popular airlines for this route: Aer Lingus, British Airways or Lufthansa.

Can I find deals for flights from United Kingdom to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on United Kingdom to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from United Kingdom 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 United Kingdom to Washington, D.C..

Can I find deals for business class flights from United Kingdom to Washington, D.C.?

Yes. Cheapflights offers flight deals from United Kingdom 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.

$288+ Cheap Flights from the United Kingdom to Washington, D.C.

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Cheap flight deals from United Kingdom to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from United Kingdom to Washington, D.C.
Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Wed 11/47:10 pm -

1 stop27h 05m

Wed 11/118:30 pm -

1 stop17h 00m

Deal found 9/20

$447

Wed 11/46:50 pm -

2 stops27h 25m

Wed 11/118:30 pm -

2 stops17h 30m

Deal found 9/21

$529

Fri 10/24:00 pm -

Nonstop8h 25m

Thu 10/1510:05 pm -

Nonstop7h 35m

Deal found 9/25

$549

Thu 10/229:25 am -

1 stop12h 20m

Thu 10/299:10 pm -

1 stop16h 40m

Deal found 9/24

$549

Thu 10/153:50 pm -

1 stop12h 05m

Tue 10/202:00 pm -

1 stop11h 25m

Deal found 9/25

$549

Sat 10/33:50 pm -

Nonstop8h 25m

Sun 10/1110:05 pm -

Nonstop7h 35m

Deal found 9/25

$550

Sun 10/119:40 am -

1 stop13h 13m

Sun 10/186:08 am -

1 stop9h 02m

Deal found 9/24

$550

Thu 10/157:00 am -

1 stop12h 15m

Thu 1/148:15 am -

2 stops17h 55m

Deal found 9/24

$551

Tue 11/248:40 am -

1 stop13h 20m

Fri 12/45:25 pm -

1 stop19h 25m

Deal found 9/24

$551

Thu 11/59:00 am -

2 stops15h 58m

Sun 11/154:00 pm -

2 stops14h 20m

Deal found 9/24

$551

Sat 10/36:50 am -

2 stops19h 21m

Thu 10/85:45 pm -

1 stop33h 35m

Deal found 9/25

$552

Wed 10/78:40 am -

2 stops19h 15m

Wed 10/1411:05 am -

1 stop14h 40m

Deal found 9/24

$552

Best flights from United Kingdom to Washington, D.C.
Discover carefully curated flight deals from United Kingdom to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Wed 10/1411:30 am -

1 stop13h 05m

Sat 10/176:31 pm -

1 stop20h 39m

Deal found 9/23

$569

Sat 10/104:40 pm -

Nonstop8h 40m

Tue 10/136:35 pm -

Nonstop7h 20m

Deal found 9/24

$570

Wed 10/212:10 pm -

1 stop26h 59m

Sun 10/257:00 am -

1 stop10h 20m

Deal found 9/24

$570

Wed 10/212:30 pm -

1 stop12h 10m

Wed 10/284:55 pm -

1 stop10h 05m

Deal found 9/24

$575

Fri 10/302:00 pm -

Nonstop8h 40m

Tue 11/106:55 pm -

Nonstop7h 25m

Deal found 9/20

$576

Wed 10/75:00 pm -

2 stops23h 50m

Tue 10/139:45 pm -

1 stop13h 15m

Deal found 9/24

$580

Thu 1/284:20 pm -

Nonstop8h 55m

Sun 1/316:20 pm -

Nonstop7h 20m

Deal found 9/22

$589

Thu 11/124:00 pm -

1 stop33h 30m

Wed 11/2510:30 pm -

2 stops30h 30m

Deal found 9/21

$650

Wed 10/219:25 pm -

1 stop29h 50m

Sat 10/318:40 pm -

1 stop10h 10m

Deal found 9/22

$659

Wed 10/79:10 am -

1 stop15h 15m

Wed 10/148:55 pm -

1 stop9h 05m

Deal found 9/24

$691

Wed 11/47:10 pm -

1 stop27h 05m

Wed 11/1112:35 pm -

2 stops24h 55m

Deal found 9/20

$698

Thu 1/2811:30 am -

1 stop13h 25m

Thu 2/255:50 pm -

2 stops19h 00m

Deal found 9/21

$772

Fri 10/169:25 am -

2 stops17h 55m

Sun 11/11:32 pm -

2 stops20h 48m

Deal found 9/25

$788

Mon 12/219:20 am -

1 stop12h 39m

Sun 12/279:21 am -

1 stop16h 35m

Deal found 9/24

$924

Wed 10/2112:15 pm -

Nonstop8h 15m

Wed 10/287:20 pm -

Nonstop7h 20m

Deal found 9/24

$570

Wed 12/212:05 pm -

Nonstop8h 35m

Sun 12/66:20 pm -

Nonstop7h 20m

Deal found 9/23

$572

Thu 10/1510:25 am -

1 stop14h 10m

Sun 10/186:15 pm -

1 stop10h 10m

Deal found 9/24

$575

Wed 10/75:00 pm -

2 stops29h 33m

Mon 10/2610:30 pm -

1 stop13h 15m

Deal found 9/24

$580

Thu 11/193:50 pm -

1 stop11h 36m

Tue 11/245:02 pm -

1 stop11h 23m

Deal found 9/25

$575

Fri 12/1112:05 pm -

Nonstop8h 35m

Tue 1/510:10 pm -

1 stop18h 10m

Deal found 9/23

$576

Thu 10/2210:25 am -

2 stops17h 51m

Mon 11/29:30 pm -

1 stop13h 15m

Deal found 9/22

$584

Thu 10/223:00 pm -

1 stop12h 17m

Mon 11/26:55 pm -

Nonstop7h 10m

Deal found 9/22

$675

Tue 3/169:20 pm -

2 stops28h 10m

Mon 3/2910:35 pm -

2 stops16h 50m

Deal found 9/22

$678

Thu 11/58:25 am -

2 stops15h 05m

Thu 11/127:40 pm -

2 stops20h 45m

Deal found 9/21

$690

Thu 10/224:40 pm -

Nonstop8h 40m

Wed 10/287:20 pm -

Nonstop7h 20m

Deal found 9/22

$576

Tue 11/310:00 am -

2 stops18h 16m

Mon 11/96:40 pm -

1 stop16h 05m

Deal found 9/20

$585

Sat 10/1012:50 pm -

1 stop15h 05m

Sun 1/245:00 pm -

1 stop11h 55m

Deal found 9/24

$590

Thu 10/89:20 am -

1 stop11h 15m

Wed 10/287:15 pm -

1 stop13h 35m

Deal found 9/24

$723

Thu 11/58:20 am -

1 stop12h 25m

Wed 11/188:50 pm -

1 stop14h 40m

Deal found 9/24

$688

Wed 12/210:40 am -

1 stop14h 50m

Sun 12/610:30 pm -

2 stops41h 05m

Deal found 9/21

$689

Last-minute flights from United Kingdom to Washington, D.C.
Discover last-minute flight deals from United Kingdom to Washington, D.C.. Data last updated September 25, 2026 and is based on user searches.

Wed 9/307:50 pm -

1 stop24h 20m

Sun 10/45:40 pm -

1 stop14h 05m

Deal found 9/24

$553

Thu 10/16:30 am -

1 stop14h 05m

Wed 10/1410:05 pm -

Nonstop7h 35m

Deal found 9/24

$554

Fri 10/24:00 pm -

Nonstop8h 25m

Thu 10/1510:05 pm -

Nonstop7h 35m

Deal found 9/25

$549

Sat 10/33:50 pm -

Nonstop8h 25m

Sun 10/1110:05 pm -

Nonstop7h 35m

Deal found 9/25

$550

Sat 10/36:50 am -

2 stops19h 21m

Thu 10/85:45 pm -

1 stop33h 35m

Deal found 9/25

$552

Sat 10/310:25 am -

1 stop14h 10m

Sat 10/106:15 pm -

1 stop10h 05m

Deal found 9/24

$553

Tue 10/64:20 pm -

1 stop11h 35m

Sat 10/1011:05 am -

1 stop28h 05m

Deal found 9/23

$553

Wed 10/78:40 am -

2 stops19h 15m

Wed 10/1411:05 am -

1 stop14h 40m

Deal found 9/24

$552

Sun 10/119:40 am -

1 stop13h 13m

Sun 10/186:08 am -

1 stop9h 02m

Deal found 9/24

$550

Thu 10/153:50 pm -

1 stop12h 05m

Tue 10/202:00 pm -

1 stop11h 25m

Deal found 9/25

$549

Thu 10/157:00 am -

1 stop12h 15m

Thu 1/148:15 am -

2 stops17h 55m

Deal found 9/24

$551

Thu 10/229:25 am -

1 stop12h 20m

Thu 10/299:10 pm -

1 stop16h 40m

Deal found 9/24

$549

One-way flights from United Kingdom to Washington, D.C.
Search for one-way flight options from United Kingdom to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.

Tue 12/812:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/23

$288

Sun 3/218:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/21

$384

Fri 1/229:50 pm -

2 stops26h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$387

Wed 11/1112:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$389

Tue 11/1012:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$390

Mon 11/98:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$391

Tue 1/1912:15 pm -

1 stop11h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$392

Sun 3/148:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$393

Sun 2/288:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/23

$395

Sun 1/318:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/23

$396

Mon 3/228:35 pm -

1 stop27h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/22

$400

Mon 1/2510:50 am -

2 stops34h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/20

$404

Find flight deals from United Kingdom to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$447 (Flightnetwork)
One-way from	$288
Popular in	June
Cheapest in	February
Average price	$653
Good round-trip deal	$582 or less
Good one-way deal	$528 or less

Provider with most accurate pricing for London (LON)-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for London (LON)-Washington, D.C. (WAS) flights.

Search Deals

From United Kingdom to Washington, D.C. (WAS)

Search Deals

One-way flight from United Kingdom to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($70 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from United Kingdom to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from United Kingdom to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Mon 1/25

8:25 pm-4:20 pm

3 stops48h 55m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$428

BirminghamWashington, D.C.

BHX Birmingham - IAD Washington, D.C. Dulles Intl

BHXIAD

Birmingham

Wed 12/9

6:05 am-3:15 pm

3 stops38h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$428

GlasgowWashington, D.C.

GLA Glasgow Intl - IAD Washington, D.C. Dulles Intl

GLAIAD

Glasgow Intl

Sat 3/6

9:05 pm-7:20 pm

3 stops27h 15m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$443

ManchesterWashington, D.C.

MAN Manchester - IAD Washington, D.C. Dulles Intl

MANIAD

Manchester

Thu 12/17

6:15 am-8:30 pm

2 stops43h 15m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$443

Quickest round-trip

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Tue 11/10

1:50 pm-5:05 pm

Nonstop8h 15m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$475

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Wed 11/25

10:00 am-9:41 pm

2 stops16h 41m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$478

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sun 11/22

8:40 am-8:16 am

2 stops28h 36m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$478

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Fri 12/25

6:30 am-4:33 pm

2 stops15h 03m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$479

LondonWashington, D.C.

LHR London Heathrow - DCA Washington, D.C. Reagan-National

LHRDCA

London Heathrow

Mon 11/9

10:35 am-5:19 pm

1 stop11h 44m

Washington, D.C. Reagan-National

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$480

LondonBaltimore

LHR London Heathrow - BWI Baltimore/Washington

LHRBWI

London Heathrow

Sat 11/21

7:30 am-12:20 am

2 stops21h 50m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/20

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from United Kingdom to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from United Kingdom with our price prediction graph.

GLA-IAD

LHR-BWI

BHX-IAD

LHR-IAD

LHR-DCA

Estimated round-trip 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 the United Kingdom to Washington, D.C.

GB0-WAS

GLA-IAD

LHR-BWI

BHX-IAD

LHR-IAD

What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of $669). Flying from United Kingdom to Washington, D.C. in May is currently the most expensive (average of $808). 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 GB to WAS?

When flying from United Kingdom to Washington, D.C., 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 United Kingdom to Washington, D.C.

The most flights from GB0 to WAS are scheduled on a Thursday (29 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 on average).

How often are flights from the United Kingdom to Washington, D.C. delayed?

About 15% of weekly flights between United Kingdom and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

What is the most punctual flight time for the United Kingdom to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

How far ahead should I book a flight from United Kingdom to Washington, D.C.?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from the United Kingdom to Washington, D.C., such as United Airlines,Aer Lingus, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,237 reviews

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

10,237 reviews

United Airlines

7.4

Good

10,237 reviews

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

1,788 reviews

United Airlines

7.4

Good

10,237 reviews

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

Icelandair

6.9

Okay

751 reviews

United Airlines

7.4

Good

10,237 reviews

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

8,237 reviews

United Airlines

7.4

Good

10,237 reviews

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

8,231 reviews

United Airlines

7.4

Good

10,237 reviews

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 United Kingdom to Washington, D.C.?
There are many flights that can get you from United Kingdom to Washington, D.C. in 8h 25m. Fly via Austrian Airlines, United Airlines, or Virgin Atlantic to get the fastest option. The distance between United Kingdom and Washington, D.C. is about 3664 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines to fly from United Kingdom to Washington, D.C. one-way?
The cheapest airlines for a one-way flight from United Kingdom to Washington, D.C. are Virgin Atlantic ($334), Icelandair ($407), and JetBlue ($411).
What are the most popular routes from United Kingdom to Washington, D.C.?
Most travelers choose London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National when deciding on the best route from United Kingdom to Washington, D.C..
What are the most reliable airlines from United Kingdom to Washington, D.C.?
No one likes to see their flight delayed. When booking a flight from United Kingdom to Washington, D.C. consider choosing Air Canada (78%), Austrian Airlines (78%) or Copa Airlines (78%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from United Kingdom to Washington, D.C.?
On average you can expect to pay $2,051 for a flight from United Kingdom to Washington, D.C.. The cheapest flight overall is $465 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $430.
Can I find deals for flights from United Kingdom to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on United Kingdom to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from United Kingdom 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 United Kingdom to Washington, D.C..
Can I find deals for business class flights from United Kingdom to Washington, D.C.?
Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Washington, D.C.?
Currently, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of $669). Flying from United Kingdom to Washington, D.C. in May is currently the most expensive (average of $808). 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

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Alternative routes for United Kingdom to Washington, D.C.

Frankfurt to Dulles Intl flights

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Heathrow to Reagan-National flights

Bruxelles-National to Reagan-National flights

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Top 10 airlines flying from United Kingdom to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$535	Average$624	FlexibilityNo cancel fee	On-time76%
Lufthansa	Cheapest$556	Average$740	FlexibilityNo cancel fee	On-time76%
United Airlines	Cheapest$563	Average$818	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$566	Average$1,075	FlexibilityNo cancel fee	On-time70%
Austrian Airlines	Cheapest$567	Average$743	FlexibilityNo cancel fee	On-time78%
American Airlines	Cheapest$568	Average$839	FlexibilityNo cancel fee	On-time71%
Virgin Atlantic	Cheapest$581	Average$757	FlexibilityNo cancel fee	On-time72%
Delta	Cheapest$581	Average$872	FlexibilityNo cancel fee	On-timeN/A
Air France	Cheapest$582	Average$730	FlexibilityNo cancel fee	On-time77%
Aer Lingus	Cheapest$658	Average$922	FlexibilityNo cancel fee	On-timeN/A

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$288+ Cheap flights from the United Kingdom to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from United Kingdom to Washington, D.C.

Cheapest flights from United Kingdom to Washington, D.C.Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Best flights from United Kingdom to Washington, D.C.Discover carefully curated flight deals from United Kingdom to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Discover carefully curated flight deals from United Kingdom to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Last-minute flights from United Kingdom to Washington, D.C.Discover last-minute flight deals from United Kingdom to Washington, D.C.. Data last updated September 25, 2026 and is based on user searches.

Discover last-minute flight deals from United Kingdom to Washington, D.C.. Data last updated September 25, 2026 and is based on user searches.

One-way flights from United Kingdom to Washington, D.C.Search for one-way flight options from United Kingdom to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.

Search for one-way flight options from United Kingdom to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.

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Best time to book a flight from United Kingdom to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from United Kingdom with our price prediction graph.

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What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

What is the cheapest time of day to fly from GB to WAS?

Find hourly flight availability from United Kingdom 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 September 25, 2026.

When flying from United Kingdom to Washington, D.C., 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 United Kingdom to Washington, D.C.

The most flights from GB0 to WAS are scheduled on a Thursday (29 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (24 on average).

How often are flights from the United Kingdom to Washington, D.C. delayed?

About 15% of weekly flights between United Kingdom and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.

What is the most punctual flight time for the United Kingdom to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.

How far ahead should I book a flight from United Kingdom to Washington, D.C.?

Booking 81 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington, D.C.

Read through reviews of airlines operating flights from the United Kingdom to Washington, D.C., such as United Airlines,Aer Lingus, andIcelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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What are the cheapest airlines to fly from United Kingdom to Washington, D.C. one-way?

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What are the most reliable airlines from United Kingdom to Washington, D.C.?

What are the cheapest flights from United Kingdom to Washington, D.C.?

Can I find deals for flights from United Kingdom to Washington, D.C. that include hotel bookings?

How can I find direct flights from United Kingdom to Washington, D.C.?

Can I find deals for business class flights from United Kingdom to Washington, D.C.?

What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

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United Kingdom and Washington, D.C. flights

Browse other United Kingdom and Washington, D.C. flight options. Last updated on September 25, 2026.

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United Kingdom to Washington, D.C. flights

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Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 25, 2026.

Top 10 airlines flying from United Kingdom to Washington, D.C.

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Cheapest flights from United Kingdom to Washington, D.C.
Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 25, 2026.

Best flights from United Kingdom to Washington, D.C.
Discover carefully curated flight deals from United Kingdom to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 25, 2026.

Last-minute flights from United Kingdom to Washington, D.C.
Discover last-minute flight deals from United Kingdom to Washington, D.C.. Data last updated September 25, 2026 and is based on user searches.

One-way flights from United Kingdom to Washington, D.C.
Search for one-way flight options from United Kingdom to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated September 25, 2026.