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Flights to Washington, D.C. Dulles Intl

£244 Cheap flights to Washington, D.C. Dulles Intl Airport

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Washington, D.C. Dulles Intl Airport departing on 19/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to Washington, D.C. Dulles Intl Airport

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:05 - 16:45
LHR
-
IAD
25h 40m
1 stop
Multiple Airlines Logo
22:15 - 10:40
IAD
-
LHR
7h 25mdirect
£450Multiple Airlines
Thu, 2 Jul - Sat, 11 Jul
British Airways Logo
08:50 - 15:45
LHR
-
IAD
11h 55m
1 stop
British Airways Logo
17:45 - 06:20
IAD
-
LHR
7h 35mdirect
£451British Airways
Sun, 6 Sep - Thu, 17 Sep
Lufthansa Logo
06:50 - 14:20
LHR
-
IAD
12h 30m
1 stop
Lufthansa Logo
06:15 - 21:20
IAD
-
LHR
10h 05m
1 stop
£453Lufthansa
Sun, 6 Sep - Thu, 17 Sep
Lufthansa Logo
16:40 - 20:00
LHR
-
IAD
8h 20mdirect
Lufthansa Logo
22:15 - 10:40
IAD
-
LHR
7h 25mdirect
£455Lufthansa
Thu, 2 Jul - Sat, 11 Jul
Air Canada Logo
09:00 - 20:10
LHR
-
IAD
16h 10m
2 stops
Air Canada Logo
13:20 - 08:30
IAD
-
LHR
14h 10m
2 stops
£455Air Canada
Sat, 7 Nov - Tue, 1 Dec
Icelandair Logo
15:40 - 19:20
LGW
-
IAD
32h 40m
1 stop
Icelandair Logo
20:30 - 14:40
IAD
-
LGW
13h 10m
1 stop
£461Icelandair
Mon, 17 Aug - Tue, 1 Sep
Icelandair Logo
15:40 - 22:15
LGW
-
IAD
11h 35m
1 stop
Icelandair Logo
20:30 - 11:45
IAD
-
LGW
10h 15m
1 stop
£465Icelandair
Tue, 18 Aug - Wed, 26 Aug
TAP AIR PORTUGAL Logo
16:35 - 20:35
LGW
-
IAD
33h 00m
1 stop
TAP AIR PORTUGAL Logo
17:25 - 09:50
IAD
-
LGW
11h 25m
1 stop
£472TAP AIR PORTUGAL
Sat, 7 Nov - Mon, 7 Dec
Aer Lingus Logo
08:10 - 15:45
BHX
-
IAD
12h 35m
1 stop
Aer Lingus Logo
21:05 - 16:05
IAD
-
BHX
14h 00m
1 stop
£502Aer Lingus
Tue, 4 Aug - Tue, 11 Aug
Aer Lingus Logo
08:10 - 19:10
BHX
-
IAD
16h 00m
1 stop
Aer Lingus Logo
20:40 - 18:10
IAD
-
BHX
16h 30m
1 stop
£511Aer Lingus
Thu, 6 Aug - Thu, 13 Aug

momondo Fare Finder

 
Locate flights to Washington, D.C. Dulles Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 22 June 2026.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 2/7

20:05-16:45

1 stop25h 40m

Washington, D.C. Dulles Intl

Sat 11/7

22:15-10:40

Nonstop7h 25m

£450

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 6/9

08:50-15:45

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 17/9

17:45-06:20

Nonstop7h 35m

£451

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 6/9

06:50-14:20

1 stop12h 30m

Washington, D.C. Dulles Intl

Thu 17/9

06:15-21:20

1 stop10h 05m

£453
Fastest return journey

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 2/7

16:40-20:00

Nonstop8h 20m

Washington, D.C. Dulles Intl

Sat 11/7

22:15-10:40

Nonstop7h 25m

£455

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 7/11

09:00-20:10

2 stops16h 10m

Washington, D.C. Dulles Intl

Tue 1/12

13:20-08:30

2 stops14h 10m

£455

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 17/8

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 1/9

20:30-14:40

1 stop13h 10m

£461

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 18/8

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 26/8

20:30-11:45

1 stop10h 15m

£465

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 7/11

16:35-20:35

1 stop33h 00m

Washington, D.C. Dulles Intl

Mon 7/12

17:25-09:50

1 stop11h 25m

£472

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Tue 4/8

08:10-15:45

1 stop12h 35m

Washington, D.C. Dulles Intl

Tue 11/8

21:05-16:05

1 stop14h 00m

£502

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Thu 6/8

08:10-19:10

1 stop16h 00m

Washington, D.C. Dulles Intl

Thu 13/8

20:40-18:10

1 stop16h 30m

£511

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Washington, D.C. Dulles Intl Airport from

Flights to Washington, D.C. Dulles Intl Airport – Travel Insights & Trends

Get data-powered insights and trends for flights to Washington, D.C. Dulles Intl Airport to help you craft the best travel plan.

What cabin class options are available on United Kingdom to Washington, D.C. Dulles Intl Airport flights?

There are 3 cabin classes available to choose from on United Kingdom to Washington, D.C. Dulles Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

According to our data, Thursday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from United Kingdom. The lowest ticket price found for a Thursday departure recently was £580. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Sunday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £626.

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

The month of January is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from United Kingdom, with most prices found around £326. If you aren’t able to travel during the month of January, then book flights to Washington, D.C. Dulles Intl Airport from United Kingdom during September instead. Flights to Washington, D.C. Dulles Intl Airport in September, while not as cheap as those in January, still average around £490.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is at midday when flights can be purchased for as low as £583. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £591.

What is the cheapest United Kingdom to Washington, D.C. Dulles Intl flight route?

Fly from Edinburgh Turnhouse to Washington, D.C. Dulles Intl for the best United Kingdom - Washington, D.C. Dulles Intl flight prices

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around £548 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from United Kingdom for as low as £510 on momondo.

Cheapest flights to Washington, D.C. Dulles Intl

Find the cheapest flights to Washington, D.C. Dulles Intl from your nearest city or airport
Find flights from London Heathrow Airport to Washington, D.C. Dulles Intl Airport
CHEAPEST MONTH TO FLY TO WASHINGTON, D.C. DULLES INTL AIRPORT FROM LONDON HEATHROW AIRPORTFebruary14% cheaperFlying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport costs on average just £474 in February
MOST EXPENSIVE MONTH TO FLY TO WASHINGTON, D.C. DULLES INTL AIRPORT FROM LONDON HEATHROW AIRPORTAugust11% more expensiveIt costs about £609 for flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO WASHINGTON, D.C. DULLES INTL AIRPORT FROM LONDON HEATHROW AIRPORTJuly518% more users visitedMore momondo users searched in flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in July than any other month

Cheap Washington, D.C. Dulles Intl Airport flight deals and tips

Summary info about Washington, D.C. Dulles Intl Airport flight prices, duration and airlines

Best One-Way Price

£244

Best Round-Trip Price

£450

Fastest flight time

12h 49m

Popular in

May
The best one-way flight price to Washington, D.C. from United Kingdom in the last 5 days is £244 (Edinburgh Turnhouse to Washington, D.C. Dulles Intl).
Search Deals
The best round-trip flight price to Washington, D.C. from United Kingdom in the last 5 days is £450 (London Heathrow to Washington, D.C. Dulles Intl).
Search Deals
The fastest flight to Washington, D.C. from United Kingdom takes 12h 49m (London Heathrow to Washington, D.C. Dulles Intl).
Search Deals
May has the highest demand for flights to Washington, D.C., with a 8% price increase on average.
Search Deals

Frequently asked questions about flying to Washington, D.C. Dulles Intl Airport

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

In general, when booking your flight to Washington, D.C. Dulles Intl Airport, September is the cheapest month on average.

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

On average, from most locations, when planning your trip to Washington, D.C. Dulles Intl Airport, try to book your flight in the region of 82 days in advance for the cheapest prices.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

In general, booking your departure to Washington, D.C. Dulles Intl Airport for a Thursday represents the best deal on airfare. Try to avoid a Sunday departure to stay away from the highest prices.

What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

On average you can find the best deals on plane tickets to Washington, D.C. Dulles Intl Airport when looking for flights with Midday departure times.

Is there an alternative airport near Washington, D.C. Dulles Intl Airport?

Finding an alternative and possibly cheaper destination airport near Washington, D.C. Dulles Intl Airport is possible. If you are planning a flight to Washington, D.C. Dulles Intl Airport, consider booking flights to Washington, D.C. Reagan-National Airport (4 mi from Washington, D.C. city centre) or Baltimore/Washington Airport (27 mi from Washington, D.C. city centre).

Is there a cheaper alternative to flying into Washington, D.C.?

Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Washington, D.C. is Washington, D.C. Reagan-National Airport where the average price is £260. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to Washington, D.C.?

The best deal found on momondo in the last two weeks was a flight to Washington, D.C. from Boston for £128. This is 52% cheaper than most flight deals to Washington, D.C.. To find the cheapest price to Washington, D.C. from your area, use momondo’s Airport-to-Airport Pricing Tool.

Which airlines fly to Washington, D.C. Dulles Intl Airport?

Of the 17 airlines that fly to Washington, D.C. Dulles Intl Airport, Virgin Atlantic, British Airways and Aer Lingus happen to be the most favoured based on our user data. Virgin Atlantic is the most popular among the three airlines, with 35% of users choosing them for their travels to Washington, D.C. Dulles Intl Airport.

When did momondo last update prices for flights to Washington, D.C. Dulles Intl Airport?

Prices for flights to Washington, D.C. Dulles Intl Airport are updated daily.

How many operators does momondo search for flights to Washington, D.C. Dulles Intl Airport?

There are 22 operators available for flights to Washington, D.C. Dulles Intl Airport as of June 2026.

How old do you have to be to fly to Washington, D.C. Dulles Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Washington, D.C. Dulles Intl Airport.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
National Harbor
Front Royal
Winchester
Ellicott City
Cambridge
Glen Burnie
Westminster
Laurel
Lutherville Timonium
Ashburn
Lexington Park
Leesburg
Owings Mills

Why use momondo?

Why should I use momondo to find a flight deal to Washington, D.C.?

Finding the right flight to Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

Can I find flights to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to Washington, D.C..

I’m not ready to book a flight to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track flight prices for Washington, D.C. and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Washington, D.C. Dulles Intl Airport IAD

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