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

For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $521. Users have also found prices from $537 and $540 on SWISS and Austrian Airlines, respectively.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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. Dulles Intl Airport?

When deciding which route to take from United Kingdom to Washington, D.C. Dulles Intl Airport consider London Heathrow - Washington, D.C. Dulles Intl, London Gatwick - Washington, D.C. Dulles Intl or London Stansted - Washington, D.C. Dulles Intl as they are the most popular.

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

While on average a flight from United Kingdom to Washington, D.C. Dulles Intl Airport is generally $1,459, our data shows the cheapest flight currently is $559. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $515 for that flight.

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

No one likes to see their flight delayed. When booking a flight from United Kingdom to Washington, D.C. Dulles Intl Airport consider choosing KLM (89%), Air France (89%) or Delta (89%) 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. Dulles Intl Airport?

When booking a flight from United Kingdom to Washington, D.C. Dulles Intl Airport, you may want to consider flying on British Airways, Aer Lingus or United Airlines as they are the most popular for this route.

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

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

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

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

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

Yes. Cheapflights offers flight deals from United Kingdom to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$282+ Cheap Flights from the United Kingdom to Washington, D.C. Dulles Intl Airport

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Find flight deals from United Kingdom to Dulles Intl

Cheapest flights from United Kingdom to Dulles Intl
Explore the most affordable flight options available from United Kingdom to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

Thu 12/44:00 pmLGW - IAD

1 stop34h 00mTAP AIR PORTUGAL

Wed 12/1010:30 pmIAD - LGW

1 stop11h 35mTAP AIR PORTUGAL

Deal found 10/31

$548

Thu 11/202:00 pmLGW - IAD

1 stop22h 50mMultiple Airlines

Tue 12/25:30 pmIAD - LGW

2 stops18h 25mMultiple Airlines

Deal found 10/29

$551

Sat 11/221:30 pmSTN - IAD

1 stop11h 00mMultiple Airlines

Sun 11/305:05 pmIAD - STN

1 stop9h 45mMultiple Airlines

Deal found 10/31

$563

Tue 12/26:00 amLHR - IAD

1 stop13h 35mTAP AIR PORTUGAL

Tue 12/95:30 pmIAD - LHR

1 stop23h 05mTAP AIR PORTUGAL

Deal found 10/29

$565

Sat 11/2212:25 pmLTN - IAD

1 stop12h 05mMultiple Airlines

Sun 11/305:05 pmIAD - LTN

1 stop13h 40mMultiple Airlines

Deal found 10/31

$566

Sat 12/66:30 pmLHR - IAD

1 stop31h 30mTAP AIR PORTUGAL

Sun 1/2510:30 pmIAD - LHR

1 stop18h 05mTAP AIR PORTUGAL

Deal found 10/30

$569

Mon 11/242:00 pmLGW - IAD

1 stop22h 45mMultiple Airlines

Mon 12/86:58 pmIAD - LGW

2 stops30h 02mMultiple Airlines

Deal found 10/29

$570

Fri 11/211:55 pmSTN - IAD

2 stops31h 10mMultiple Airlines

Tue 11/256:05 pmIAD - STN

2 stops21h 10mMultiple Airlines

Deal found 10/29

$575

Wed 12/38:40 pmSTN - IAD

2 stops23h 35mMultiple Airlines

Mon 12/85:30 pmIAD - STN

2 stops15h 35mMultiple Airlines

Deal found 10/29

$577

Thu 12/42:35 pmSTN - IAD

2 stops30h 30mMultiple Airlines

Wed 12/106:05 pmIAD - STN

2 stops20h 35mMultiple Airlines

Deal found 10/30

$579

Thu 11/272:00 pmLGW - IAD

1 stop22h 50mMultiple Airlines

Fri 12/59:20 pmIAD - LGW

1 stop31h 45mMultiple Airlines

Deal found 10/30

$581

Sun 12/712:25 pmLHR - IAD

1 stop13h 35mTAP AIR PORTUGAL

Thu 12/115:30 pmIAD - LHR

1 stop12h 55mTAP AIR PORTUGAL

Deal found 10/31

$588

Best flights from United Kingdom to Dulles Intl
Discover carefully curated flight deals from United Kingdom to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2025.

Thu 1/226:30 amSTN - IAD

2 stops17h 00mMultiple Airlines

Sun 1/257:40 pmIAD - STN

2 stops19h 25mMultiple Airlines

Deal found 10/29

$548

Thu 12/1112:35 pmGLA - IAD

1 stop10h 55mIcelandair

Sun 12/147:40 pmIAD - GLA

1 stop9h 15mIcelandair

Deal found 10/30

$615

Wed 4/157:05 amLHR - IAD

2 stops14h 45mScandinavian Airlines

Wed 4/298:20 pmIAD - LHR

2 stops17h 30mScandinavian Airlines

Deal found 10/31

$643

Thu 11/276:30 amLHR - IAD

1 stop14h 35mDelta

Sun 12/710:20 pmIAD - LHR

Nonstop7h 30mDelta

Deal found 10/29

$665

Thu 3/1912:10 pmLHR - IAD

Nonstop8h 25mBritish Airways

Wed 4/15:40 pmIAD - LHR

Nonstop7h 40mBritish Airways

Deal found 10/31

$666

Wed 4/296:30 amLHR - IAD

1 stop14h 05mVirgin Atlantic

Sun 5/310:30 pmIAD - LHR

Nonstop7h 20mVirgin Atlantic

Deal found 10/29

$674

Fri 12/2611:25 amMAN - IAD

1 stop14h 35mTAP AIR PORTUGAL

Sat 1/175:30 pmIAD - MAN

1 stop12h 05mTAP AIR PORTUGAL

Deal found 10/31

$703

Wed 12/178:15 amBHX - IAD

1 stop12h 20mAer Lingus

Sun 12/219:00 pmIAD - BHX

1 stop10h 50mAer Lingus

Deal found 10/30

$709

Tue 11/2510:00 amLCY - IAD

1 stop11h 05mKLM

Sun 12/76:05 pmIAD - LCY

1 stop9h 45mKLM

Deal found 10/29

$725

Mon 12/812:30 pmEDI - IAD

Nonstop8h 20mLufthansa

Tue 12/2310:25 pmIAD - EDI

Nonstop7h 05mLufthansa

Deal found 10/30

$917

Sat 11/221:30 pmSTN - IAD

1 stop11h 00mMultiple Airlines

Sun 11/305:05 pmIAD - STN

1 stop9h 45mMultiple Airlines

Deal found 10/31

$563

Tue 11/2512:35 pmGLA - IAD

1 stop10h 55mIcelandair

Tue 12/167:40 pmIAD - GLA

1 stop9h 15mIcelandair

Deal found 10/29

$618

Wed 2/188:00 amLTN - IAD

1 stop15h 30mMultiple Airlines

Wed 2/257:40 pmIAD - LTN

1 stop12h 15mMultiple Airlines

Deal found 10/31

$564

Wed 12/39:05 pmLHR - IAD

2 stops25h 10mScandinavian Airlines

Mon 12/88:30 pmIAD - LHR

2 stops17h 20mScandinavian Airlines

Deal found 10/31

$650

Sun 3/112:10 pmLHR - IAD

Nonstop8h 25mBritish Airways

Fri 3/1310:45 pmIAD - LHR

Nonstop7h 15mBritish Airways

Deal found 10/31

$683

Wed 1/711:55 amMAN - IAD

1 stop11h 35mIcelandair

Tue 1/207:40 pmIAD - MAN

1 stop10h 05mIcelandair

Deal found 10/30

$634

Wed 12/39:20 amLCY - IAD

1 stop11h 45mVirgin Atlantic

Mon 12/812:19 pmIAD - LCY

2 stops13h 56mVirgin Atlantic

Deal found 10/31

$700

Thu 12/42:35 pmSTN - IAD

2 stops30h 30mMultiple Airlines

Wed 12/106:05 pmIAD - STN

2 stops20h 35mMultiple Airlines

Deal found 10/30

$579

Thu 12/118:20 amGLA - IAD

1 stop12h 15mAer Lingus

Sun 12/149:00 pmIAD - GLA

1 stop14h 00mAer Lingus

Deal found 10/30

$714

Sat 12/65:10 pmMAN - IAD

1 stop32h 50mTAP AIR PORTUGAL

Tue 12/305:30 pmIAD - MAN

1 stop12h 05mTAP AIR PORTUGAL

Deal found 10/31

$716

Wed 11/2612:55 pmMAN - IAD

2 stops33h 20mScandinavian Airlines

Wed 12/38:30 pmIAD - MAN

2 stops15h 55mScandinavian Airlines

Deal found 10/29

$654

Thu 3/510:00 amLCY - IAD

1 stop11h 05mKLM

Wed 3/117:05 pmIAD - LCY

1 stop9h 45mKLM

Deal found 10/31

$750

Thu 11/1311:45 amLHR - IAD

1 stop12h 36mBritish Airways

Sun 12/146:20 pmIAD - LHR

Nonstop7h 10mBritish Airways

Deal found 10/29

$687

Fri 11/213:00 pmSTN - IAD

2 stops30h 05mMultiple Airlines

Tue 11/256:05 pmIAD - STN

2 stops21h 10mMultiple Airlines

Deal found 10/30

$582

Thu 11/2710:00 amLCY - IAD

1 stop11h 05mVirgin Atlantic

Wed 12/311:06 amIAD - LCY

2 stops15h 09mVirgin Atlantic

Deal found 10/29

$709

Wed 11/2611:55 amLGW - IAD

1 stop11h 35mIcelandair

Wed 12/107:40 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 10/29

$650

Fri 12/261:20 pmBHX - IAD

1 stop11h 10mAer Lingus

Fri 1/25:05 pmIAD - BHX

1 stop9h 40mAer Lingus

Deal found 10/29

$725

Sat 3/1412:55 pmMAN - IAD

2 stops57h 20mScandinavian Airlines

Tue 3/2412:30 pmIAD - MAN

2 stops26h 05mScandinavian Airlines

Deal found 10/29

$672

Wed 12/37:40 amSTN - IAD

2 stops18h 20mMultiple Airlines

Mon 12/85:30 pmIAD - STN

2 stops25h 25mMultiple Airlines

Deal found 10/31

$584

Tue 11/2511:55 amLGW - IAD

1 stop11h 35mIcelandair

Wed 12/107:40 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 10/29

$650

Last-minute flights from United Kingdom to Dulles Intl
Discover last-minute flight deals from United Kingdom to Dulles Intl. Data last updated October 31, 2025 and is based on user searches.

Thu 11/202:00 pmLGW - IAD

1 stop22h 50mMultiple Airlines

Tue 12/25:30 pmIAD - LGW

2 stops18h 25mMultiple Airlines

Deal found 10/29

$551

Fri 11/211:55 pmSTN - IAD

2 stops31h 10mMultiple Airlines

Tue 11/256:05 pmIAD - STN

2 stops21h 10mMultiple Airlines

Deal found 10/29

$575

Fri 11/212:00 pmLGW - IAD

1 stop22h 45mMultiple Airlines

Mon 11/246:55 amIAD - LGW

2 stops18h 05mMultiple Airlines

Deal found 10/31

$589

Fri 11/212:00 pmLGW - IAD

1 stop22h 45mMultiple Airlines

Tue 12/25:30 pmIAD - LGW

2 stops18h 25mMultiple Airlines

Deal found 10/29

$590

Fri 11/213:00 pmSTN - IAD

2 stops30h 05mMultiple Airlines

Mon 11/246:50 pmIAD - STN

2 stops20h 10mMultiple Airlines

Deal found 10/31

$591

Sat 11/221:30 pmSTN - IAD

1 stop11h 00mMultiple Airlines

Sun 11/305:05 pmIAD - STN

1 stop9h 45mMultiple Airlines

Deal found 10/31

$563

Sat 11/2212:25 pmLTN - IAD

1 stop12h 05mMultiple Airlines

Sun 11/305:05 pmIAD - LTN

1 stop13h 40mMultiple Airlines

Deal found 10/31

$566

Sat 11/221:25 pmLGW - IAD

1 stop11h 05mMultiple Airlines

Sun 11/309:00 pmIAD - LGW

1 stop10h 45mMultiple Airlines

Deal found 10/31

$600

Mon 11/242:00 pmLGW - IAD

1 stop22h 45mMultiple Airlines

Mon 12/86:58 pmIAD - LGW

2 stops30h 02mMultiple Airlines

Deal found 10/29

$570

Tue 11/257:00 amLTN - IAD

1 stop16h 30mMultiple Airlines

Tue 12/97:40 pmIAD - LTN

1 stop14h 10mMultiple Airlines

Deal found 10/30

$601

Thu 11/272:00 pmLGW - IAD

1 stop22h 50mMultiple Airlines

Fri 12/59:20 pmIAD - LGW

1 stop31h 45mMultiple Airlines

Deal found 10/30

$581

Thu 11/272:00 pmLGW - IAD

1 stop22h 50mMultiple Airlines

Sun 12/79:20 pmIAD - LGW

1 stop31h 40mMultiple Airlines

Deal found 10/30

$598

One-way flights from United Kingdom to Dulles Intl
Search for one-way flight options from United Kingdom to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 31, 2025.

Sat 1/108:25 pmEDI - IAD

2 stops47h 13mMultiple Airlines

Deal found 10/29

$282

Sun 1/117:00 amEDI - IAD

2 stops36h 38mMultiple Airlines

Deal found 10/29

$287

Fri 1/96:45 amEDI - IAD

2 stops36h 53mMultiple Airlines

Deal found 10/29

$345

Thu 1/88:45 pmGLA - IAD

2 stops41h 03mMultiple Airlines

Deal found 10/29

$349

Thu 12/48:45 pmGLA - IAD

2 stops52h 39mMultiple Airlines

Deal found 10/29

$355

Sun 12/78:00 amMAN - IAD

3 stops59h 29mMultiple Airlines

Deal found 10/30

$360

Mon 1/193:05 pmMAN - IAD

2 stops30h 25mMultiple Airlines

Deal found 10/29

$362

Thu 1/88:45 pmEDI - IAD

2 stops41h 03mMultiple Airlines

Deal found 10/29

$365

Sat 12/69:20 pmMAN - IAD

2 stops28h 40mMultiple Airlines

Deal found 10/30

$377

Sat 12/65:50 pmBHX - IAD

2 stops32h 10mMultiple Airlines

Deal found 10/30

$377

Sun 12/75:15 pmBHX - IAD

2 stops27h 00mMultiple Airlines

Deal found 10/30

$385

Tue 12/99:40 amEDI - IAD

3 stops33h 49mMultiple Airlines

Deal found 10/29

$398

Cheap flight deals from United Kingdom to Dulles Intl

Most accurate provider	OneTravel 3 stars
Most trusted provider	OneTravel 3 stars
Round-trip from	$541 (Justfly.com)
One-way from	$282 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$745
Good round-trip deal	$755 or less
Good one-way deal	$686 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. Dulles Intl

Search Deals

One-way flight from United Kingdom to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($94 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Price to beat on a round-trip flight from United Kingdom to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from United Kingdom to Washington, D.C. Dulles Intl.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 1/22

6:30 am-6:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

Sun 1/25

7:40 pm-8:05 pm

2 stops19h 25m

$548

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sat 11/22

1:30 pm-7:30 pm

1 stop11h 00m

Washington, D.C. Dulles Intl

Sun 11/30

5:05 pm-7:50 am

1 stop9h 45m

$563

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 2/18

8:00 am-6:30 pm

1 stop15h 30m

Washington, D.C. Dulles Intl

Wed 2/25

7:40 pm-12:55 pm

1 stop12h 15m

$564

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 12/4

2:35 pm-4:05 pm

2 stops30h 30m

Washington, D.C. Dulles Intl

Wed 12/10

6:05 pm-7:40 pm

2 stops20h 35m

$579

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 11/21

3:00 pm-4:05 pm

2 stops30h 05m

Washington, D.C. Dulles Intl

Tue 11/25

6:05 pm-8:15 pm

2 stops21h 10m

$582

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 12/3

7:40 am-9:00 pm

2 stops18h 20m

Washington, D.C. Dulles Intl

Mon 12/8

5:30 pm-11:55 pm

2 stops25h 25m

$584

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Thu 12/11

12:35 pm-6:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Sun 12/14

7:40 pm-9:55 am

1 stop9h 15m

$615

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Tue 11/25

12:35 pm-6:30 pm

1 stop10h 55m

Washington, D.C. Dulles Intl

Tue 12/16

7:40 pm-9:55 am

1 stop9h 15m

$618

ManchesterWashington, D.C.

MAN - IAD

MANIAD

Manchester

Wed 1/7

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 1/20

7:40 pm-10:45 am

1 stop10h 05m

$634

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 4/15

7:05 am-4:50 pm

2 stops14h 45m

Washington, D.C. Dulles Intl

Wed 4/29

8:20 pm-6:50 pm

2 stops17h 30m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results

...

Best time to book a flight from United Kingdom to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from United Kingdom 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 the United Kingdom to Washington, D.C. Dulles Intl Airport

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

Currently, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of $346). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $719). 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 IAD?

It’s typically best to fly out from United Kingdom to Washington, D.C. Dulles Intl Airport in the afternoon. Doing so could potentially save you 10% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, Virgin Atlantic, and United Airlines from the United Kingdom to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Delta

7.9

Good

7,998 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Virgin Atlantic

7.5

Good

671 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

United Airlines

7.4

Good

8,995 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Aer Lingus

7.2

Good

1,365 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

British Airways

6.7

Okay

7,489 reviews

Delta

7.9

Good

7,998 reviews

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Related info for your journey

How long is the flight from United Kingdom to Washington, D.C. Dulles Intl Airport?
For as low as $615, Icelandair can have you in Washington, D.C. Dulles Intl Airport from United Kingdom in 10h 55m. Airlines will cover a distance of 3426 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from United Kingdom to Washington, D.C. Dulles Intl Airport one-way?
For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as $521. Users have also found prices from $537 and $540 on SWISS and Austrian Airlines, respectively.
What are the most popular routes from United Kingdom to Washington, D.C. Dulles Intl Airport?
When deciding which route to take from United Kingdom to Washington, D.C. Dulles Intl Airport consider London Heathrow - Washington, D.C. Dulles Intl, London Gatwick - Washington, D.C. Dulles Intl or London Stansted - Washington, D.C. Dulles Intl as they are the most popular.
What are the most reliable airlines from United Kingdom to Washington, D.C. Dulles Intl Airport?
No one likes to see their flight delayed. When booking a flight from United Kingdom to Washington, D.C. Dulles Intl Airport consider choosing KLM (89%), Air France (89%) or Delta (89%) 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. Dulles Intl Airport?
While on average a flight from United Kingdom to Washington, D.C. Dulles Intl Airport is generally $1,459, our data shows the cheapest flight currently is $559. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $515 for that flight.
Can I find deals for flights from United Kingdom to Dulles Intl that include hotel bookings?
Yes. In addition to deals on United Kingdom to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from United Kingdom to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Dulles Intl.
Can I find deals for business class flights from United Kingdom to Dulles Intl?
Yes. Cheapflights offers flight deals from United Kingdom to Dulles Intl 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. Dulles Intl Airport?
Currently, February is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of $346). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $719). 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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Arlington

Springfield

Hanover

Silver Spring

Fairfax

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Linthicum Heights

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Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from United Kingdom to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$320	Average$943	FlexibilityNo cancel fee	On-timeN/A
Scandinavian Airlines	Cheapest$390	Average$883	FlexibilityNo cancel fee	On-time77%
Austrian Airlines	Cheapest$431	Average$984	FlexibilityNo cancel fee	On-time78%
TAP AIR PORTUGAL	Cheapest$473	Average$730	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$510	Average$836	FlexibilityNo cancel fee	On-time76%
American Airlines	Cheapest$562	Average$692	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$567	Average$905	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$594	Average$820	FlexibilityNo cancel fee	On-time70%
Air Canada	Cheapest$635	Average$663	FlexibilityNo cancel fee	On-time67%
Aer Lingus	Cheapest$641	Average$905	FlexibilityNo cancel fee	On-timeN/A

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$282+ Cheap flights from the United Kingdom to Dulles Intl (IAD)

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from United Kingdom to Dulles IntlExplore the most affordable flight options available from United Kingdom to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

Explore the most affordable flight options available from United Kingdom to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.

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Cheapest flights from United Kingdom to Dulles Intl
Explore the most affordable flight options available from United Kingdom to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2025.