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$247+ Cheap flights from Washington, D.C. (WAS) to the United Kingdom

WAS — LHR
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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Cheap flight deals from Washington, D.C. to United Kingdom

Cheapest flights from Washington, D.C. to United Kingdom

Mon 12/75:25 pm -
2 stops23h 50m
Mon 12/1410:00 am -
2 stops33h 40m
Deal found 11/6$641
Thu 12/37:40 pm -
2 stops15h 10m
Thu 12/107:30 am -
2 stops16h 00m
Deal found 11/6$647
Sat 12/58:30 pm -
1 stop11h 45m
Mon 12/147:55 am -
1 stop14h 20m
Deal found 11/7$692
Mon 11/237:40 pm -
1 stop18h 50m
Wed 12/912:15 pm -
1 stop11h 15m
Deal found 11/5$693
Mon 11/237:40 pm -
1 stop18h 50m
Sun 12/68:35 pm -
1 stop26h 55m
Deal found 11/5$695
Mon 11/307:40 pm -
1 stop14h 50m
Tue 12/88:00 am -
1 stop15h 30m
Deal found 11/5$696
Thu 11/267:40 pm -
1 stop18h 50m
Tue 12/88:35 pm -
1 stop26h 55m
Deal found 11/9$696
Sat 12/58:30 pm -
1 stop12h 10m
Sat 12/125:50 am -
1 stop18h 00m
Deal found 11/7$696
Tue 11/177:40 pm -
1 stop10h 10m
Thu 11/2612:15 pm -
1 stop11h 15m
Deal found 11/5$697
Tue 11/177:40 pm -
1 stop15h 00m
Tue 11/248:00 am -
1 stop15h 30m
Deal found 11/5$698
Tue 12/17:40 pm -
1 stop10h 10m
Wed 12/912:15 pm -
1 stop11h 15m
Deal found 11/5$698
Mon 11/95:25 pm -
2 stops22h 10m
Mon 11/164:35 pm -
1 stop27h 05m
Deal found 11/7$699

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$580
(Trip.com)

One-way from

$247
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$877

Good round-trip deal

$953 or less

Good one-way deal

$448 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
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From Washington, D.C. (WAS) to United Kingdom
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One-way flight from Washington, D.C. (WAS) to United Kingdom
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Highest demand for flights based on searches. 15% potential increase in price ($166 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to United Kingdom.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to United Kingdom.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Tue 12/8

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$267

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Thu 1/21

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$270

Washington, D.C.Edinburgh

IAD Washington, D.C. Dulles Intl - EDI Edinburgh Turnhouse

IADEDI

Washington, D.C. Dulles Intl

Wed 1/13

7:40 pm-7:50 pm

3 stops19h 10m

Edinburgh Turnhouse

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$284

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Tue 12/1

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$292

Washington, D.C.Edinburgh

IAD Washington, D.C. Dulles Intl - EDI Edinburgh Turnhouse

IADEDI

Washington, D.C. Dulles Intl

Mon 1/11

7:40 pm-3:20 pm

3 stops38h 40m

Edinburgh Turnhouse

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$293

Washington, D.C.Manchester

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

IADMAN

Washington, D.C. Dulles Intl

Tue 12/1

7:40 pm-10:45 am

1 stop10h 05m

Manchester

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$294

Washington, D.C.Liverpool

IAD Washington, D.C. Dulles Intl - LPL Liverpool J. Lennon

IADLPL

Washington, D.C. Dulles Intl

Wed 1/13

7:40 pm-12:05 am

3 stops47h 25m

Liverpool J. Lennon

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$295

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Mon 12/7

7:40 pm-9:40 pm

3 stops21h 00m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$309

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Fri 1/8

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$316

Washington, D.C.Glasgow

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

IADGLA

Washington, D.C. Dulles Intl

Fri 1/22

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Wed 12/31

12:00 am-6:00 pm

Nonstop0h 00m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington, D.C. to United Kingdom

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to the United Kingdom

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $683). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,262). 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 WAS to GB?

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

The most flights from WAS to GB0 are scheduled on a Sunday (27 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (20 on average).

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

About 17% of weekly flights between Washington, D.C. and United Kingdom have experienced delays in the past year, with the average delay time being 173 minutes.

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

Historically, flights departing in the early afternoon 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 Washington, D.C. to the United Kingdom flights?

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to United Kingdom, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing United Kingdom

Peruse reviews from past customers who have flown with Aer Lingus,United Airlines, andAmerican Airlines from Washington, D.C. to the United Kingdom to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.3
Good
1,882 reviews
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
United Airlines
7.3
Good
10,474 reviews
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
American Airlines
7.0
Good
12,228 reviews
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Icelandair
6.9
Okay
767 reviews
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
British Airways
6.7
Okay
8,286 reviews
Aer Lingus
7.3
Good
1,882 reviews

Entertainment

7.0

Overall

7.3

Boarding

7.5

Comfort

7.2

Food

6.7

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

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

    Departing from Washington, D.C. to United Kingdom will take you 11h 35m. There are 3683 mi between Washington, D.C. and United Kingdom. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Virgin Atlantic, which is currently one of the cheapest options available, starting at $151. Icelandair flights start at $228 while deals on KLM start at $229 one-way.

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

    When deciding which route to take from Washington, D.C. to United Kingdom consider Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow as they are the most popular.

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

    Consider Air Canada (85%), Austrian Airlines (85%) or Iberia (82%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to United Kingdom.

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

    On average you can expect to pay $1,759 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $324 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $531.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to United Kingdom.

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to United Kingdom 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 Washington, D.C. to United Kingdom?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $683). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,262). 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

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

AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest$390Average$953FlexibilityNo cancel feeOn-time72%
TAP AIR PORTUGALCheapest$424Average$636FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$450Average$1,064FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$462Average$1,037FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$465Average$755FlexibilityNo cancel feeOn-time76%
IberiaCheapest$500Average$914FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$515Average$797FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$520Average$1,014FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$581Average$1,069FlexibilityNo cancel feeOn-time77%
FinnairCheapest$591Average$869FlexibilityNo cancel feeOn-time76%

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