United Kingdom

$252+ Cheap flights from Dulles Intl (IAD) to the United Kingdom

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
Jan 27 — Feb 31
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Cheap flight deals from Dulles Intl to United Kingdom

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to United Kingdom (GB0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 22, 2025.

Round-trip from

$499
(oojo)

One-way from

$252
(Mytrip)

Good round-trip deal

$689 or less

Good one-way deal

$440 or less
From Washington, D.C. Dulles Intl to United Kingdom
One-way flight from Washington, D.C. Dulles Intl to United Kingdom
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to United Kingdom.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to United Kingdom.

Find flight deals from Dulles Intl to United Kingdom

Cheapest flights from Dulles Intl to United Kingdom
Explore the most affordable flight options available from Dulles Intl to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 22, 2025.

This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1510:40 pmIAD - INV
1 stop11h 15mBritish Airways
Wed 4/2310:30 amINV - IAD
1 stop14h 40mBritish Airways
Deal found 1/21$499
This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/18:30 pmIAD - LGW
1 stop13h 10mIcelandair
Mon 5/53:40 pmLGW - IAD
1 stop32h 40mIcelandair
Deal found 1/22$524
This CrystalTravel deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/68:30 pmIAD - GLA
1 stop11h 55mIcelandair
Mon 5/192:20 pmGLA - IAD
1 stop10h 00mIcelandair
Deal found 1/22$524
This Mytrip deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/308:30 pmIAD - LHR
1 stop10h 25mIcelandair
Sun 5/119:25 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 1/22$525
This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/75:10 pmIAD - LHR
1 stop17h 50mScandinavian Airlines
Sun 2/91:55 pmLHR - IAD
2 stops30h 45mScandinavian Airlines
Deal found 1/22$526
This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/177:15 pmIAD - LGW
1 stop15h 30mTAP AIR PORTUGAL
Mon 3/34:35 pmLGW - IAD
1 stop26h 55mTAP AIR PORTUGAL
Deal found 1/22$527
This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/227:40 pmIAD - STN
2 stops14h 10mMultiple Airlines
Wed 1/2910:25 pmSTN - IAD
2 stops25h 00mMultiple Airlines
Deal found 1/21$529
This oojo deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2610:30 pmIAD - LHR
1 stop14h 00mTAP AIR PORTUGAL
Wed 2/56:00 amLHR - IAD
1 stop20h 00mTAP AIR PORTUGAL
Deal found 1/22$532
This Kiwi.com deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/25:10 pmIAD - LGW
1 stop10h 15mMultiple Airlines
Tue 2/118:50 amLGW - IAD
1 stop11h 50mMultiple Airlines
Deal found 1/22$538
This Kiwi.com deal was found by Cheapflights users on 1/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/25:10 pmIAD - LTN
1 stop10h 40mMultiple Airlines
Tue 2/119:00 amLTN - IAD
1 stop11h 40mMultiple Airlines
Deal found 1/22$538
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1812:29 pmIAD - INV
2 stops19h 16mDelta
Wed 2/261:15 pmINV - IAD
2 stops16h 05mDelta
Deal found 1/21$545
This Finnair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1810:40 pmIAD - INV
1 stop11h 20mMultiple Airlines
Sat 8/309:00 pmINV - IAD
1 stop23h 50mMultiple Airlines
Deal found 1/20$553

Find flights from Dulles Intl to United Kingdom within your budget

Customize your flight search to find flights from Dulles Intl to United Kingdom 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 2,558,603 searches. Data last updated January 22, 2025.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Tue 2/4

7:40 pm-9:55 am

1 stop9h 15m

Glasgow Intl

Tue 2/11

12:35 pm-6:25 pm

1 stop10h 50m

$477

Washington, D.C.Inverness

IAD - INV

IADINV

Washington, D.C. Dulles Intl

Tue 4/1

5:50 pm-9:30 am

1 stop10h 40m

Inverness

Fri 4/11

10:25 am-8:10 pm

1 stop14h 45m

$499

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Tue 3/18

8:40 pm-10:45 am

1 stop10h 05m

Manchester

Wed 3/26

11:55 am-7:25 pm

1 stop11h 30m

$511

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 4/30

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Sun 5/11

9:25 pm-7:20 pm

1 stop26h 55m

$525

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 2/23

10:30 pm-3:45 pm

1 stop12h 15m

London Gatwick

Mon 3/10

4:35 pm-3:30 pm

1 stop26h 55m

$526

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 2/7

5:10 pm-4:00 pm

1 stop17h 50m

London Heathrow

Sun 2/9

1:55 pm-3:40 pm

2 stops30h 45m

$526

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Tue 3/4

9:15 pm-2:35 pm

1 stop12h 20m

Manchester

Tue 3/11

6:00 am-4:40 pm

1 stop14h 40m

$526

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 2/4

7:40 pm-6:45 pm

2 stops18h 05m

London Stansted

Thu 2/13

6:30 am-6:25 pm

2 stops16h 55m

$531

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 2/2

5:10 pm-8:50 am

1 stop10h 40m

London Luton

Tue 2/11

9:00 am-3:40 pm

1 stop11h 40m

$535

Washington, D.C.Inverness

IAD - INV

IADINV

Washington, D.C. Dulles Intl

Wed 4/2

5:25 pm-10:15 pm

1 stop23h 50m

Inverness

Fri 4/11

6:25 am-4:18 pm

2 stops14h 53m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 60 results
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Best time to book a flight from Dulles Intl to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Dulles Intl with our price prediction graph.
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.

Travel insights for flights from Dulles Intl to United Kingdom

Get recent, data-driven insights about flights from Dulles Intl to United Kingdom including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to United Kingdom (average of $661). Flying from Washington, D.C. Dulles Intl Airport to United Kingdom in June is currently the most expensive (average of $1,137). 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 IAD to GB?

Find hourly flight availability from Dulles Intl to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 22, 2025.

When flying from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to United Kingdom

Explore weekly flight availability from Dulles Intl to United Kingdom. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 22, 2025.

The most flights from IAD to GB0 are scheduled on a Monday (26 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

Rainfall in United Kingdom by month

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

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

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

If weather is an important factor for your trip to United Kingdom, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated January 22, 2025.
See what other customers who have flown with Scandinavian Airlines, Iberia and Aer Lingus from Washington, D.C. to United Kingdom have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

8.0
Very good
8,514 reviews
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

7.8
Good
1,339 reviews
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

7.6
Good
1,286 reviews
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

7.5
Good
787 reviews
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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

7.5
Good
1,600 reviews
8.0
Very good
8,514 reviews

Overall

8.0

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.6

Comfort

8.0

Reviews

1 / 10

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 Dulles Intl to United Kingdom. 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 Washington, D.C. Dulles Intl Airport to United Kingdom one-way?

    One-way options have recently been found by users for as low as $252 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $307 and Iberia from $348 one-way.

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

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

    Before booking your flight to United Kingdom from Washington, D.C. Dulles Intl Airport, check out the most reliable airlines to get you to your destination on time: KLM (88%), Delta (88%), Virgin Atlantic( 88%).

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to United Kingdom is $394. On average you can expect to pay $1,533. The most popular route, (Washington, D.C. Dulles Intl - London Heathrow), can usually be booked for $460.

  • Can I find deals for flights from Dulles Intl to United Kingdom that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to United Kingdom?

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

  • Can I find deals for business class flights from Dulles Intl to United Kingdom?

    Yes. Cheapflights offers flight deals from Dulles Intl 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. Dulles Intl Airport to United Kingdom?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to United Kingdom (average of $661). Flying from Washington, D.C. Dulles Intl Airport to United Kingdom in June is currently the most expensive (average of $1,137). 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 Dulles Intl to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Dulles Intl to United Kingdom

Discover the top 10 airlines that operate flights from Dulles Intl to United Kingdom. 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 2,558,603 searches. Data last updated January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$354Average$848FlexibilityNo cancel feeOn-time75%
PLAYCheapest$369Average$482FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$370Average$658FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$398Average$649FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$459Average$814FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$474Average$709FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$533Average$825FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$537Average$841FlexibilityNo cancel feeOn-time67%
FinnairCheapest$551Average$720FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$558Average$848FlexibilityNo cancel feeOn-time71%
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