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 Air Transat. According to our data, you can fly for as low as $421. Users have also found prices from $434 and $511 on TAP AIR PORTUGAL and WestJet, 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 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 $1,588, our data shows the cheapest flight currently is $619. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $493 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, British Airways or Delta as they are the most popular for this route.

How far in advance should I book a flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

Travelers have found it’s best to book a flight 50 days in advance to save up to 34% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 50 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from United Kingdom to Washington, D.C. Dulles Intl Airport 1-2 weeks in advance for as low as $712, or $911 for flights within the next 24 hours.

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

The best pricing can be found in the month of February. Prices to Washington, D.C. Dulles Intl Airport from United Kingdom average $732. You can even find prices in February for less than $732, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $305. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from United Kingdom. Flying in the targeted month can save you up to 17%.

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.

$624+ 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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$564 (ChecknFly)
One-way from	$327 (Kiwi.com)
Popular in	July
Cheapest in	February
Average price	$679
Good round-trip deal	$694 or less
Good one-way deal	$668 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. 12% potential increase in price ($104 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 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 marzo 28, 2025.

sáb. 5/33:40 pmLGW - IAD

1 stop32h 40mIcelandair

dom. 5/118:30 pmIAD - LGW

1 stop13h 10mIcelandair

Deal found 3/26

$563

jue. 5/14:40 pmLHR - IAD

Nonstop8h 10mLufthansa

sáb. 5/310:24 pmIAD - LHR

1 stop17h 16mLufthansa

Deal found 3/27

$564

jue. 5/86:15 amSTN - IAD

2 stops18h 44mMultiple Airlines

sáb. 5/1710:05 pmIAD - STN

2 stops21h 15mMultiple Airlines

Deal found 3/27

$564

dom. 5/1110:35 amLHR - IAD

2 stops14h 24mScandinavian Airlines

dom. 5/1810:05 pmIAD - LHR

1 stop15h 25mScandinavian Airlines

Deal found 3/26

$567

sáb. 4/261:05 pmLHR - IAD

1 stop30h 45mAustrian Airlines

dom. 4/276:30 pmIAD - LHR

Nonstop7h 25mAustrian Airlines

Deal found 3/27

$580

sáb. 4/261:05 pmLHR - IAD

1 stop30h 45mBrussels Airlines

dom. 4/275:30 pmIAD - LHR

1 stop13h 50mBrussels Airlines

Deal found 3/28

$582

dom. 5/119:50 amLGW - IAD

1 stop14h 05mMultiple Airlines

dom. 5/185:20 pmIAD - LGW

1 stop9h 35mMultiple Airlines

Deal found 3/26

$586

mié. 4/309:25 pmLHR - IAD

1 stop26h 55mIcelandair

dom. 5/118:30 pmIAD - LHR

1 stop10h 25mIcelandair

Deal found 3/27

$602

jue. 5/11:00 pmLTN - IAD

2 stops35h 59mMultiple Airlines

vie. 5/1610:05 pmIAD - LTN

3 stops22h 25mMultiple Airlines

Deal found 3/27

$602

lun. 5/127:10 pmBHX - IAD

1 stop29h 49mScandinavian Airlines

mar. 5/2710:05 pmIAD - BHX

1 stop15h 30mScandinavian Airlines

Deal found 3/27

$605

dom. 5/118:40 amBHX - IAD

1 stop12h 10mMultiple Airlines

dom. 5/185:20 pmIAD - BHX

1 stop9h 20mMultiple Airlines

Deal found 3/27

$617

lun. 5/128:15 amNCL - IAD

1 stop12h 35mMultiple Airlines

lun. 5/198:25 pmIAD - NCL

1 stop16h 00mMultiple Airlines

Deal found 3/27

$635

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 marzo 28, 2025.

jue. 5/14:40 pmLHR - IAD

Nonstop8h 10mLufthansa

sáb. 5/310:24 pmIAD - LHR

1 stop17h 16mLufthansa

Deal found 3/27

$564

jue. 5/86:15 amSTN - IAD

2 stops18h 44mMultiple Airlines

sáb. 5/1710:05 pmIAD - STN

2 stops21h 15mMultiple Airlines

Deal found 3/27

$564

mié. 4/303:40 pmLGW - IAD

1 stop32h 40mIcelandair

dom. 5/118:30 pmIAD - LGW

1 stop13h 10mIcelandair

Deal found 3/27

$566

dom. 5/1110:35 amLHR - IAD

2 stops14h 24mScandinavian Airlines

dom. 5/1810:05 pmIAD - LHR

1 stop15h 25mScandinavian Airlines

Deal found 3/26

$567

sáb. 4/261:05 pmLHR - IAD

1 stop30h 45mAustrian Airlines

dom. 4/276:30 pmIAD - LHR

Nonstop7h 25mAustrian Airlines

Deal found 3/27

$580

sáb. 4/261:05 pmLHR - IAD

1 stop30h 45mBrussels Airlines

dom. 4/275:30 pmIAD - LHR

1 stop13h 50mBrussels Airlines

Deal found 3/28

$582

mié. 9/39:15 pmLGW - IAD

2 stops23h 05mTAP AIR PORTUGAL

mié. 9/175:50 pmIAD - LGW

1 stop15h 10mTAP AIR PORTUGAL

Deal found 3/27

$664

jue. 4/248:40 amLHR - IAD

1 stop11h 55mKLM

jue. 5/15:50 pmIAD - LHR

Nonstop7h 30mKLM

Deal found 3/27

$667

jue. 4/247:15 pmLHR - IAD

1 stop25h 20mVirgin Atlantic

dom. 4/275:50 pmIAD - LHR

Nonstop7h 30mVirgin Atlantic

Deal found 3/27

$682

mié. 4/239:50 amLHR - IAD

1 stop11h 00mBritish Airways

mié. 4/305:40 pmIAD - LHR

Nonstop7h 35mBritish Airways

Deal found 3/27

$689

sáb. 4/267:45 amLHR - IAD

1 stop10h 45mUnited Airlines

mié. 4/308:22 amIAD - LHR

2 stops17h 08mUnited Airlines

Deal found 3/27

$695

mar. 4/226:15 amLHR - IAD

1 stop15h 05mDelta

vie. 5/21:56 pmIAD - LHR

1 stop11h 49mDelta

Deal found 3/27

$703

Last-minute flights from United Kingdom to Dulles Intl
Discover last-minute flight deals from United Kingdom to Dulles Intl. Data last updated marzo 28, 2025 and is based on user searches.

mié. 4/210:35 amLGW - IAD

1 stop15h 15mTAP AIR PORTUGAL

dom. 4/65:45 pmIAD - LGW

1 stop16h 25mTAP AIR PORTUGAL

Deal found 3/26

$713

jue. 4/38:15 amSTN - IAD

2 stops16h 05mMultiple Airlines

vie. 4/188:30 pmIAD - STN

2 stops15h 35mMultiple Airlines

Deal found 3/27

$624

jue. 4/38:45 amLTN - IAD

2 stops15h 35mMultiple Airlines

vie. 4/188:30 pmIAD - LTN

2 stops20h 15mMultiple Airlines

Deal found 3/27

$629

jue. 4/38:55 amLGW - IAD

2 stops15h 25mMultiple Airlines

vie. 4/188:30 pmIAD - LGW

2 stops18h 05mMultiple Airlines

Deal found 3/27

$682

jue. 4/39:55 amLHR - IAD

2 stops39h 04mScandinavian Airlines

jue. 6/1210:05 pmIAD - LHR

1 stop14h 35mScandinavian Airlines

Deal found 3/27

$741

jue. 4/38:40 amLHR - IAD

1 stop12h 35mMultiple Airlines

mié. 4/306:30 pmIAD - LHR

Nonstop7h 25mMultiple Airlines

Deal found 3/27

$742

jue. 4/38:40 amLHR - IAD

1 stop11h 55mKLM

mié. 4/305:50 pmIAD - LHR

Nonstop7h 30mKLM

Deal found 3/27

$744

jue. 4/36:00 amLHR - IAD

1 stop14h 20mTAP AIR PORTUGAL

dom. 4/610:20 pmIAD - LHR

1 stop14h 25mTAP AIR PORTUGAL

Deal found 3/27

$750

jue. 4/31:00 pmLGW - IAD

1 stop11h 20mIcelandair

mié. 4/308:30 pmIAD - LGW

1 stop10h 15mIcelandair

Deal found 3/27

$759

jue. 4/38:40 amLHR - IAD

1 stop12h 35mUnited Airlines

lun. 4/73:47 pmIAD - LHR

1 stop9h 58mUnited Airlines

Deal found 3/27

$765

jue. 4/36:00 amLHR - IAD

1 stop15h 15mSWISS

mar. 4/298:45 pmIAD - LHR

1 stop11h 15mSWISS

Deal found 3/27

$766

jue. 4/36:00 amLHR - IAD

1 stop13h 35mAustrian Airlines

mar. 4/2910:15 pmIAD - LHR

Nonstop7h 25mAustrian Airlines

Deal found 3/27

$768

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 marzo 28, 2025.

mié. 5/1411:25 pmEDI - IAD

2 stops39h 51mMultiple Airlines

Deal found 3/27

$327

vie. 6/68:45 pmMAN - IAD

2 stops47h 35mMultiple Airlines

Deal found 3/27

$376

lun. 5/198:50 pmLHR - IAD

2 stops23h 30mMultiple Airlines

Deal found 3/27

$400

mar. 6/175:55 amLGW - IAD

2 stops19h 55mMultiple Airlines

Deal found 3/27

$400

vie. 5/27:20 amSTN - IAD

2 stops18h 30mMultiple Airlines

Deal found 3/27

$401

lun. 4/289:55 pmLTN - IAD

3 stops50h 10mMultiple Airlines

Deal found 3/27

$407

lun. 4/2812:40 pmLGW - IAD

1 stop14h 44mAir Transat

Deal found 3/27

$421

mié. 5/148:00 amLHR - IAD

1 stop12h 20mTAP AIR PORTUGAL

Deal found 3/27

$434

mié. 5/216:45 amLCY - IAD

2 stops32h 31mMultiple Airlines

Deal found 3/27

$448

lun. 5/54:25 pmLGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 3/27

$449

mar. 6/172:10 pmLHR - IAD

1 stop32h 44mWestJet

Deal found 3/27

$511

dom. 4/279:25 pmLHR - IAD

1 stop26h 55mIcelandair

Deal found 3/27

$553

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.

LGW - IAD

LGWIAD

London Gatwick

sáb. 5/3

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

dom. 5/11

8:30 pm-2:40 pm

1 stop13h 10m

$563

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

jue. 5/1

4:40 pm-7:50 pm

Nonstop8h 10m

Washington, D.C. Dulles Intl

sáb. 5/3

10:24 pm-8:40 pm

1 stop17h 16m

$564

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

jue. 5/8

6:15 am-7:59 pm

2 stops18h 44m

Washington, D.C. Dulles Intl

sáb. 5/17

10:05 pm-12:20 am

2 stops21h 15m

$564

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

dom. 5/11

10:35 am-7:59 pm

2 stops14h 24m

Washington, D.C. Dulles Intl

dom. 5/18

10:05 pm-6:30 pm

1 stop15h 25m

$567

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sáb. 4/26

1:05 pm-2:50 pm

1 stop30h 45m

Washington, D.C. Dulles Intl

dom. 4/27

6:30 pm-6:55 am

Nonstop7h 25m

$580

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sáb. 4/26

1:05 pm-2:50 pm

1 stop30h 45m

Washington, D.C. Dulles Intl

dom. 4/27

5:30 pm-12:20 pm

1 stop13h 50m

$582

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

dom. 5/11

9:50 am-6:55 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

dom. 5/18

5:20 pm-7:55 am

1 stop9h 35m

$586

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

mié. 4/30

9:25 pm-7:20 pm

1 stop26h 55m

Washington, D.C. Dulles Intl

dom. 5/11

8:30 pm-11:55 am

1 stop10h 25m

$602

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

jue. 5/1

1:00 pm-7:59 pm

2 stops35h 59m

Washington, D.C. Dulles Intl

vie. 5/16

10:05 pm-1:30 am

3 stops22h 25m

$602

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

lun. 5/12

7:10 pm-7:59 pm

1 stop29h 49m

Washington, D.C. Dulles Intl

mar. 5/27

10:05 pm-6:35 pm

1 stop15h 30m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

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 $309). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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.

Rainfall in Dulles Intl by month

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.

Temperature in Dulles Intl by month

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).

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, KLM and Air Transat from United Kingdom to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,896 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Transat

7.8

Good

381 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines

7.5

Good

769 reviews

Delta

8.0

Very good

7,896 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 Air Transat. According to our data, you can fly for as low as $421. Users have also found prices from $434 and $511 on TAP AIR PORTUGAL and WestJet, 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 $1,588, our data shows the cheapest flight currently is $619. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay $493 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 $309). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $385). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Rockville

Woodbridge

Gaithersburg

Fredericksburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Sterling

Bowie

Gettysburg

National Harbor

Oxon Hill

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
PLAY	Cheapest$357	Average$493	FlexibilityNo cancel fee	On-timeN/A
Scandinavian Airlines	Cheapest$390	Average$784	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$475	Average$953	FlexibilityNo cancel fee	On-timeN/A
Icelandair	Cheapest$529	Average$827	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$558	Average$853	FlexibilityNo cancel fee	On-timeN/A
TAP AIR PORTUGAL	Cheapest$564	Average$804	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$583	Average$1,000	FlexibilityNo cancel fee	On-time69%
Iberia	Cheapest$586	Average$977	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$594	Average$885	FlexibilityNo cancel fee	On-time70%
American Airlines	Cheapest$619	Average$728	FlexibilityNo cancel fee	On-time71%

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.

$327+ 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 5/14. 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 marzo 28, 2025.

Most accurate provider

Most trusted provider

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 marzo 28, 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 marzo 28, 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 marzo 28, 2025.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, KLM and Air Transat from United Kingdom to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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 the United Kingdom?

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 marzo 28, 2025.