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 $532 and $600 on United Airlines and SWISS, 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 City - 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 $1,014, our data shows the cheapest flight currently is $564. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $440 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 (90%), Air France (90%) or Delta (90%) 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 American Airlines, Air Canada or British Airways 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.

$318+ Cheap Flights from the United Kingdom to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from United Kingdom to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from United Kingdom to Dulles Intl

Round-trip from	$527 (Mytrip)
One-way from	$318 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$666
Good round-trip deal	$653 or less
Good one-way deal	$685 or less

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. 10% potential increase in price ($90 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 September 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

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 September 17, 2025.

Thu 10/307:25 amLBA - IAD

1 stop17h 05mMultiple Airlines

Thu 11/69:00 pmIAD - LBA

1 stop19h 40mMultiple Airlines

Deal found 9/15

$527

Thu 9/258:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Thu 10/26:40 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 9/16

$534

Thu 10/26:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

Mon 10/66:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/15

$535

Wed 10/1512:40 pmLBA - IAD

1 stop11h 50mMultiple Airlines

Wed 10/229:00 pmIAD - LBA

1 stop11h 55mMultiple Airlines

Deal found 9/17

$535

Thu 11/139:20 pmSTN - IAD

2 stops26h 10mMultiple Airlines

Sun 11/307:40 pmIAD - STN

2 stops20h 15mMultiple Airlines

Deal found 9/16

$535

Mon 9/227:30 pmLHR - IAD

1 stop24h 05mAustrian Airlines

Sun 9/286:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/15

$536

Thu 11/67:25 pmLHR - IAD

1 stop24h 15mAustrian Airlines

Wed 11/1210:15 pmIAD - LHR

Nonstop7h 35mAustrian Airlines

Deal found 9/16

$537

Thu 10/29:30 amLHR - IAD

1 stop11h 20mUnited Airlines

Tue 10/76:40 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 9/14

$538

Thu 11/279:00 amLTN - IAD

1 stop11h 35mMultiple Airlines

Sun 11/309:00 pmIAD - LTN

1 stop20h 00mMultiple Airlines

Deal found 9/17

$538

Mon 11/106:10 amSTN - IAD

2 stops17h 20mMultiple Airlines

Fri 11/147:40 pmIAD - STN

2 stops20h 05mMultiple Airlines

Deal found 9/15

$538

Thu 10/96:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

Sun 10/126:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/17

$539

Tue 9/237:30 amLHR - IAD

1 stop12h 45mUnited Airlines

Thu 10/26:15 amIAD - LHR

1 stop9h 25mUnited Airlines

Deal found 9/16

$540

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 September 17, 2025.

Thu 10/307:25 amLBA - IAD

1 stop17h 05mMultiple Airlines

Thu 11/69:00 pmIAD - LBA

1 stop19h 40mMultiple Airlines

Deal found 9/15

$527

Thu 11/139:00 amLHR - IAD

1 stop12h 40mUnited Airlines

Fri 11/219:45 amIAD - LHR

1 stop16h 25mUnited Airlines

Deal found 9/16

$534

Thu 11/62:50 pmLHR - IAD

1 stop28h 50mAustrian Airlines

Wed 11/126:20 pmIAD - LHR

Nonstop7h 20mAustrian Airlines

Deal found 9/16

$537

Fri 10/317:20 pmLCY - IAD

1 stop24h 15mSWISS

Fri 11/75:25 pmIAD - LCY

1 stop13h 15mSWISS

Deal found 9/16

$561

Thu 3/129:40 amLCY - IAD

1 stop15h 35mLufthansa

Mon 3/237:00 pmIAD - LCY

1 stop17h 40mLufthansa

Deal found 9/16

$576

Thu 3/510:10 amMAN - IAD

1 stop12h 05mScandinavian Airlines

Mon 3/99:30 pmIAD - MAN

1 stop17h 05mScandinavian Airlines

Deal found 9/14

$584

Mon 12/110:40 amLGW - IAD

1 stop32h 55mTAP AIR PORTUGAL

Mon 12/85:30 pmIAD - LGW

1 stop17h 15mTAP AIR PORTUGAL

Deal found 9/17

$611

Fri 10/33:40 pmLGW - IAD

1 stop11h 30mIcelandair

Tue 10/148:30 pmIAD - LGW

1 stop13h 10mIcelandair

Deal found 9/16

$635

Sun 2/159:30 amNCL - IAD

1 stop11h 05mBritish Airways

Mon 2/236:20 pmIAD - NCL

1 stop12h 05mBritish Airways

Deal found 9/15

$643

Tue 10/281:25 pmGLA - IAD

1 stop31h 40mKLM

Fri 11/76:05 pmIAD - GLA

1 stop23h 05mKLM

Deal found 9/15

$652

Thu 11/69:05 amGLA - IAD

1 stop12h 00mDelta

Wed 11/1211:05 amIAD - GLA

2 stops16h 25mDelta

Deal found 9/15

$652

Wed 10/299:05 amGLA - IAD

1 stop12h 00mAir France

Thu 11/66:05 pmIAD - GLA

1 stop17h 35mAir France

Deal found 9/15

$652

Fri 10/3111:20 amNCL - IAD

2 stops15h 41mVirgin Atlantic

Fri 11/76:50 pmIAD - NCL

1 stop10h 30mVirgin Atlantic

Deal found 9/16

$655

Thu 3/58:50 amNCL - IAD

1 stop11h 45mAmerican Airlines

Mon 3/97:20 pmIAD - NCL

1 stop12h 05mAmerican Airlines

Deal found 9/14

$659

Tue 12/29:00 amLHR - IAD

1 stop12h 40mUnited Airlines

Thu 12/116:00 amIAD - LHR

2 stops20h 10mUnited Airlines

Deal found 9/16

$534

Fri 10/319:00 amLHR - IAD

1 stop12h 40mMultiple Airlines

Fri 11/76:20 pmIAD - LHR

Nonstop7h 20mMultiple Airlines

Deal found 9/16

$534

Thu 10/96:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

Sun 10/126:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/17

$539

Fri 10/37:30 pmLCY - IAD

1 stop25h 45mSWISS

Mon 10/68:45 pmIAD - LCY

1 stop10h 45mSWISS

Deal found 9/15

$582

Sun 3/89:00 amLHR - IAD

1 stop12h 40mUnited Airlines

Tue 3/1711:15 pmIAD - LHR

Nonstop7h 35mUnited Airlines

Deal found 9/16

$534

Sat 1/1012:55 pmMAN - IAD

2 stops57h 20mScandinavian Airlines

Mon 1/128:30 pmIAD - MAN

1 stop17h 05mScandinavian Airlines

Deal found 9/16

$589

Thu 11/67:25 pmLHR - IAD

1 stop24h 15mAustrian Airlines

Wed 11/196:20 pmIAD - LHR

Nonstop7h 20mAustrian Airlines

Deal found 9/17

$539

Fri 10/311:05 pmLTN - IAD

2 stops32h 35mMultiple Airlines

Fri 11/74:25 pmIAD - LTN

2 stops18h 00mMultiple Airlines

Deal found 9/16

$557

Thu 3/511:55 amLGW - IAD

1 stop11h 35mIcelandair

Thu 3/128:40 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 9/17

$636

Tue 11/259:20 pmLGW - IAD

2 stops28h 40mTAP AIR PORTUGAL

Sun 11/3010:30 pmIAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Deal found 9/17

$644

Mon 12/811:00 amEDI - IAD

1 stop13h 55mBritish Airways

Sun 12/149:45 pmIAD - EDI

1 stop10h 30mBritish Airways

Deal found 9/17

$646

Wed 10/18:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Sun 10/121:00 pmIAD - LHR

1 stop15h 35mUnited Airlines

Deal found 9/16

$534

Mon 11/39:05 amGLA - IAD

1 stop12h 00mDelta

Mon 11/1012:11 pmIAD - GLA

2 stops15h 19mDelta

Deal found 9/15

$652

Tue 10/289:05 amGLA - IAD

1 stop12h 00mKLM

Thu 11/66:05 pmIAD - GLA

1 stop17h 35mKLM

Deal found 9/15

$652

Sun 1/118:30 pmMAN - IAD

2 stops25h 45mScandinavian Airlines

Sat 1/178:30 pmIAD - MAN

2 stops18h 15mScandinavian Airlines

Deal found 9/17

$595

Sat 11/15:45 amEDI - IAD

1 stop15h 20mVirgin Atlantic

Sat 11/812:27 pmIAD - EDI

2 stops16h 18mVirgin Atlantic

Deal found 9/17

$658

Last-minute flights from United Kingdom to Dulles Intl
Discover last-minute flight deals from United Kingdom to Dulles Intl. Data last updated September 17, 2025 and is based on user searches.

Mon 9/227:30 pmLHR - IAD

1 stop24h 05mAustrian Airlines

Sun 9/286:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/15

$536

Tue 9/233:05 pmLHR - IAD

1 stop28h 30mUnited Airlines

Tue 9/3012:35 pmIAD - LHR

1 stop12h 20mUnited Airlines

Deal found 9/16

$537

Tue 9/238:30 amLHR - IAD

1 stop11h 45mUnited Airlines

Sun 9/2810:25 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 9/16

$540

Tue 9/236:30 amLHR - IAD

1 stop12h 00mLufthansa

Tue 9/305:36 pmIAD - LHR

1 stop13h 44mLufthansa

Deal found 9/16

$541

Wed 9/247:45 amLHR - IAD

1 stop11h 40mBrussels Airlines

Thu 10/25:36 pmIAD - LHR

1 stop13h 44mBrussels Airlines

Deal found 9/15

$542

Thu 9/258:40 amLHR - IAD

1 stop12h 35mUnited Airlines

Thu 10/26:40 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 9/16

$534

Thu 10/26:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

Mon 10/66:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/15

$535

Thu 10/29:30 amLHR - IAD

1 stop11h 20mUnited Airlines

Tue 10/76:40 pmIAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 9/14

$538

Thu 10/96:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

Sun 10/126:40 pmIAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 9/17

$539

Wed 10/1512:40 pmLBA - IAD

1 stop11h 50mMultiple Airlines

Wed 10/229:00 pmIAD - LBA

1 stop11h 55mMultiple Airlines

Deal found 9/17

$535

Sun 10/2611:10 amLGW - IAD

1 stop13h 20mMultiple Airlines

Sun 11/25:05 pmIAD - LGW

1 stop11h 10mMultiple Airlines

Deal found 9/16

$540

Thu 10/307:25 amLBA - IAD

1 stop17h 05mMultiple Airlines

Thu 11/69:00 pmIAD - LBA

1 stop19h 40mMultiple Airlines

Deal found 9/15

$527

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 September 17, 2025.

Wed 11/58:35 pmGLA - IAD

2 stops52h 16mMultiple Airlines

Deal found 9/17

$318

Wed 11/57:10 pmEDI - IAD

2 stops53h 41mMultiple Airlines

Deal found 9/17

$337

Sun 11/29:05 amMAN - IAD

2 stops35h 10mMultiple Airlines

Deal found 9/15

$359

Wed 10/88:10 pmMAN - IAD

2 stops24h 10mMultiple Airlines

Deal found 9/17

$365

Wed 10/156:45 amMAN - IAD

2 stops19h 05mMultiple Airlines

Deal found 9/15

$367

Wed 11/126:15 amEDI - IAD

2 stops38h 00mMultiple Airlines

Deal found 9/16

$377

Tue 10/710:50 pmMAN - IAD

3 stops45h 30mMultiple Airlines

Deal found 9/17

$380

Tue 11/48:25 amGLA - IAD

3 stops41h 35mMultiple Airlines

Deal found 9/17

$385

Sun 11/167:35 amEDI - IAD

2 stops18h 25mMultiple Airlines

Deal found 9/17

$389

Tue 9/3010:50 pmMAN - IAD

3 stops27h 15mMultiple Airlines

Deal found 9/17

$390

Fri 1/166:45 amEDI - IAD

2 stops37h 03mMultiple Airlines

Deal found 9/16

$396

Tue 11/43:20 pmEDI - IAD

3 stops34h 40mMultiple Airlines

Deal found 9/17

$398

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

LeedsWashington, D.C.

LBA - IAD

LBAIAD

Leeds/Bradford

Thu 10/30

7:25 am-8:30 pm

1 stop17h 05m

Washington, D.C. Dulles Intl

Thu 11/6

9:00 pm-9:40 pm

1 stop19h 40m

$527

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 11/13

9:00 am-4:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 11/21

9:45 am-7:10 am

1 stop16h 25m

$534

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 12/2

9:00 am-4:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Thu 12/11

6:00 am-7:10 am

2 stops20h 10m

$534

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 10/31

9:00 am-5:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 11/7

6:20 pm-6:40 am

Nonstop7h 20m

$534

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 3/8

9:00 am-5:40 pm

1 stop12h 40m

Washington, D.C. Dulles Intl

Tue 3/17

11:15 pm-10:50 am

Nonstop7h 35m

$534

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 10/1

8:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

Sun 10/12

1:00 pm-9:35 am

1 stop15h 35m

$534

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 11/6

2:50 pm-2:40 pm

1 stop28h 50m

Washington, D.C. Dulles Intl

Wed 11/12

6:20 pm-6:40 am

Nonstop7h 20m

$537

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 10/9

6:00 am-2:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Sun 10/12

6:40 pm-6:55 am

Nonstop7h 15m

$539

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 11/6

7:25 pm-2:40 pm

1 stop24h 15m

Washington, D.C. Dulles Intl

Wed 11/19

6:20 pm-6:40 am

Nonstop7h 20m

$539

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 10/31

1:05 pm-5:40 pm

2 stops32h 35m

Washington, D.C. Dulles Intl

Fri 11/7

4:25 pm-3:25 pm

2 stops18h 00m

$557

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

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, August is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of $292). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Washington, D.C. Dulles Intl Airport as you normally would.

Weekly flight availability from United Kingdom to Washington, D.C. Dulles Intl Airport

The most flights from GB0 to IAD are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, United Airlines, and Virgin Atlantic 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

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,961 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

United Airlines

7.4

Good

8,926 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Virgin Atlantic

7.4

Good

664 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Aer Lingus

7.2

Good

1,277 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

British Airways

6.7

Okay

7,367 reviews

Delta

8.0

Very good

7,961 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

How long is the flight from United Kingdom to Washington, D.C. Dulles Intl Airport?
For as low as $584, United Airlines can have you in Washington, D.C. Dulles Intl Airport from United Kingdom in 12h 05m. Airlines will cover a distance of 3553 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 $532 and $600 on United Airlines and SWISS, 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 City - 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 (90%), Air France (90%) or Delta (90%) 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 $1,014, our data shows the cheapest flight currently is $564. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $440 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, August is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of $292). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

National Harbor

Dundalk

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$926	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$714	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$490	Average$812	FlexibilityNo cancel fee	On-time76%
American Airlines	Cheapest$562	Average$687	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$567	Average$932	FlexibilityNo cancel fee	On-time69%
British Airways	Cheapest$595	Average$826	FlexibilityNo cancel fee	On-time70%
Air Canada	Cheapest$635	Average$663	FlexibilityNo cancel fee	On-time67%
Aer Lingus	Cheapest$646	Average$907	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$318+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from United Kingdom to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from United Kingdom to Dulles Intl

Keep the following information in mind while searching for United Kingdom to Dulles Intl flight deals. Data was last updated September 17, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from United Kingdom to Dulles Intl

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 September 17, 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 September 17, 2025.

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.

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.

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?

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

Find hourly flight availability from United Kingdom to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Weekly flight availability from United Kingdom to Washington, D.C. Dulles Intl Airport

Reviews of airlines servicing Dulles Intl

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for United Kingdom to Dulles Intl

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

Top 10 airlines flying from United Kingdom to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 September 17, 2025.