United Kingdom

$212+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LHR
Jun 17 — Jun 241
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Cheap flight deals from Dulles Intl to United Kingdom

Keep the following information in mind while searching for Dulles Intl to United Kingdom flight deals. Data was last updated June 12, 2025.

Round-trip from

$609
(oojo)

One-way from

$212
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$962

Good round-trip deal

$687 or less

Good one-way deal

$446 or less
From Washington, D.C. Dulles Intl to United Kingdom
One-way flight from Washington, D.C. Dulles Intl to United Kingdom
Highest demand for flights based on searches. 12% potential increase in price ($111 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in June 2025
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 June 12, 2025.

This oojo deal was found by Cheapflights users on 6/11. 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.
Wed 11/198:30 pmIAD - BHX
1 stop17h 00mScandinavian Airlines
Wed 11/267:10 pmBHX - IAD
1 stop27h 05mScandinavian Airlines
Deal found 6/11$568
This oojo deal was found by Cheapflights users on 6/11. 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 8/1410:20 pmIAD - MAN
1 stop30h 45mTAP AIR PORTUGAL
Mon 8/255:55 pmMAN - IAD
1 stop26h 25mTAP AIR PORTUGAL
Deal found 6/11$609
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/810:40 pmIAD - MAN
1 stop12h 10mBritish Airways
Sat 8/2310:50 amMAN - IAD
1 stop14h 25mBritish Airways
Deal found 6/12$611
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/310:05 pmIAD - MAN
1 stop30h 05mScandinavian Airlines
Tue 10/77:35 pmMAN - IAD
2 stops29h 24mScandinavian Airlines
Deal found 6/11$613
This Expedia deal was found by Cheapflights users on 6/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/55:50 pmIAD - GLA
1 stop11h 40mBritish Airways
Sun 10/125:55 amGLA - IAD
1 stop15h 00mBritish Airways
Deal found 6/9$615
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/49:20 pmIAD - BHX
1 stop11h 20mVirgin Atlantic
Wed 8/206:00 amBHX - IAD
1 stop18h 15mVirgin Atlantic
Deal found 6/11$617
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Sun 10/510:05 pmIAD - GLA
2 stops18h 20mMultiple Airlines
Sat 10/113:35 pmGLA - IAD
3 stops33h 24mMultiple Airlines
Deal found 6/10$619
This oojo deal was found by Cheapflights users on 6/10. 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 8/1711:15 pmIAD - GLA
1 stop9h 10mIcelandair
Thu 8/212:20 pmGLA - IAD
1 stop12h 50mIcelandair
Deal found 6/10$621
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:40 pmIAD - GLA
1 stop16h 40mAmerican Airlines
Sun 8/317:35 amGLA - IAD
1 stop14h 55mAmerican Airlines
Deal found 6/11$622
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/85:20 pmIAD - MAN
1 stop9h 15mAer Lingus
Sat 8/238:10 amMAN - IAD
1 stop12h 40mAer Lingus
Deal found 6/11$624
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/82:25 pmIAD - MAN
1 stop14h 55mAir Canada
Sat 8/2311:50 amMAN - IAD
2 stops28h 23mAir Canada
Deal found 6/12$625
This Delta deal was found by Cheapflights users on 6/12. 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.
Fri 8/1512:13 pmIAD - MAN
1 stop14h 32mDelta
Tue 9/22:15 pmMAN - IAD
1 stop26h 47mDelta
Deal found 6/12$626

Cheapflights Fare Finder

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 June 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to the United Kingdom that are best for you.

Fly from

Dulles Intl

Fly to

United Kingdom

Route

Depart

Return

Price

Washington, D.C.Birmingham

IAD - BHX

IADBHX

Washington, D.C. Dulles Intl

Wed 11/19

8:30 pm-6:30 pm

1 stop17h 00m

Birmingham

Wed 11/26

7:10 pm-5:15 pm

1 stop27h 05m

$568

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Thu 8/14

10:20 pm-10:05 am

1 stop30h 45m

Manchester

Mon 8/25

5:55 pm-3:20 pm

1 stop26h 25m

$609

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Fri 8/8

10:40 pm-3:50 pm

1 stop12h 10m

Manchester

Sat 8/23

10:50 am-8:15 pm

1 stop14h 25m

$611

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Fri 10/3

10:05 pm-9:10 am

1 stop30h 05m

Manchester

Tue 10/7

7:35 pm-7:59 pm

2 stops29h 24m

$613

Washington, D.C.Birmingham

IAD - BHX

IADBHX

Washington, D.C. Dulles Intl

Mon 8/4

9:20 pm-1:40 pm

1 stop11h 20m

Birmingham

Wed 8/20

6:00 am-7:15 pm

1 stop18h 15m

$617

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Sun 8/17

11:15 pm-1:25 pm

1 stop9h 10m

Glasgow Intl

Thu 8/21

2:20 pm-10:10 pm

1 stop12h 50m

$621

Washington, D.C.Glasgow

IAD - GLA

IADGLA

Washington, D.C. Dulles Intl

Fri 8/1

10:40 pm-8:20 pm

1 stop16h 40m

Glasgow Intl

Sun 8/31

7:35 am-5:30 pm

1 stop14h 55m

$622

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Fri 8/8

5:20 pm-7:35 am

1 stop9h 15m

Manchester

Sat 8/23

8:10 am-3:50 pm

1 stop12h 40m

$624

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Fri 8/8

2:25 pm-10:20 am

1 stop14h 55m

Manchester

Sat 8/23

11:50 am-11:13 am

2 stops28h 23m

$625

Washington, D.C.Manchester

IAD - MAN

IADMAN

Washington, D.C. Dulles Intl

Fri 8/15

12:13 pm-7:45 am

1 stop14h 32m

Manchester

Tue 9/2

2:15 pm-12:02 pm

1 stop26h 47m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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.

Cheapflights Insights

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

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 $1,108). 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 June 12, 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 June 12, 2025.

The most flights from IAD to GB0 are scheduled on a Wednesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 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 June 12, 2025.
See what other customers who have flown with Delta, Porter Airlines and KLM 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

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
8.0
Very good

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

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!

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 $212 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $304 and Virgin Atlantic from $362 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: Aer Lingus (73%), Finnair (73%), KLM( 72%).

  • 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 $376. On average you can expect to pay $2,488. The most popular route, (Washington, D.C. Dulles Intl - London Heathrow), can usually be booked for $426.

  • 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 $1,108). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$379Average$506FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$394Average$675FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$435Average$627FlexibilityNo cancel feeOn-time76%
KLMCheapest$445Average$862FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$486Average$758FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$533Average$777FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$549Average$800FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$552Average$816FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$555Average$837FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$558Average$800FlexibilityNo cancel feeOn-time71%

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