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Flights to Washington, D.C. Dulles Intl

£237 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 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from the United Kingdom to Washington, D.C. Dulles Intl Airport

Cheap return flights

Icelandair Logo
15:40 - 19:20LGW-IAD
32h 40m1 stop
Icelandair Logo
20:30 - 14:40IAD-LGW
13h 10m1 stop
£332Icelandair
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Mon, 1 Sep - Tue, 9 Sep
Icelandair Logo
15:40 - 22:10LGW-IAD
11h 30m1 stop
Icelandair Logo
20:30 - 14:40IAD-LGW
13h 10m1 stop
£350Icelandair
Find Deal
Sat, 27 Sep - Sat, 4 Oct
Aer Lingus Logo
13:25 - 19:30LHR-IAD
11h 05m1 stop
Aer Lingus Logo
17:20 - 08:00IAD-LHR
9h 40m1 stop
£375Aer Lingus
Find Deal
Tue, 16 Sep - Tue, 30 Sep
Lufthansa Logo
16:40 - 19:55LHR-IAD
8h 15mdirect
Lufthansa Logo
18:40 - 06:55IAD-LHR
7h 15mdirect
£378Lufthansa
Find Deal
Tue, 16 Sep - Tue, 30 Sep
Aer Lingus Logo
09:50 - 15:50LHR-IAD
11h 00m1 stop
Aer Lingus Logo
21:00 - 13:25IAD-LHR
11h 25m1 stop
£380Aer Lingus
Find Deal
Wed, 3 Sep - Tue, 30 Sep
Lufthansa Logo
08:45 - 15:15LCY-IAD
11h 30m1 stop
Lufthansa Logo
18:00 - 16:40IAD-LCY
17h 40m1 stop
£490Lufthansa
Find Deal
Wed, 8 Oct - Sat, 8 Nov
Virgin Atlantic Logo
10:00 - 15:35LCY-IAD
10h 35m1 stop
Virgin Atlantic Logo
17:25 - 08:10IAD-LCY
9h 45m1 stop
£503Virgin Atlantic
Find Deal
Thu, 18 Sep - Wed, 24 Sep
Virgin Atlantic Logo
10:00 - 16:05LCY-IAD
11h 05m1 stop
Virgin Atlantic Logo
06:10 - 08:10IAD-LCY
21h 00m2 stops
£505Virgin Atlantic
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Fri, 21 Nov - Fri, 28 Nov
British Airways Logo
07:50 - 15:35EDI-IAD
12h 45m1 stop
British Airways Logo
21:45 - 14:15IAD-EDI
11h 30m1 stop
£524British Airways
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Wed, 26 Nov - Wed, 3 Dec
British Airways Logo
05:50 - 18:54GLA-IAD
18h 04m2 stops
British Airways Logo
14:16 - 10:45IAD-GLA
15h 29m2 stops
£642British Airways
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Fri, 24 Oct - Mon, 3 Nov

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 15 August 2025.
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

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 1/9

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 9/9

20:30-14:40

1 stop13h 10m

£332

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 27/9

15:40-22:10

1 stop11h 30m

Washington, D.C. Dulles Intl

Sat 4/10

20:30-14:40

1 stop13h 10m

£350

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 16/9

13:25-19:30

1 stop11h 05m

Washington, D.C. Dulles Intl

Tue 30/9

17:20-08:00

1 stop9h 40m

£375

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 16/9

16:40-19:55

Nonstop8h 15m

Washington, D.C. Dulles Intl

Tue 30/9

18:40-06:55

Nonstop7h 15m

£378

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 3/9

09:50-15:50

1 stop11h 00m

Washington, D.C. Dulles Intl

Tue 30/9

21:00-13:25

1 stop11h 25m

£380

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Wed 8/10

08:45-15:15

1 stop11h 30m

Washington, D.C. Dulles Intl

Sat 8/11

18:00-16:40

1 stop17h 40m

£490

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Thu 18/9

10:00-15:35

1 stop10h 35m

Washington, D.C. Dulles Intl

Wed 24/9

17:25-08:10

1 stop9h 45m

£503

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Fri 21/11

10:00-16:05

1 stop11h 05m

Washington, D.C. Dulles Intl

Fri 28/11

06:10-08:10

2 stops21h 00m

£505

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Wed 26/11

07:50-15:35

1 stop12h 45m

Washington, D.C. Dulles Intl

Wed 3/12

21:45-14:15

1 stop11h 30m

£524

GlasgowWashington, D.C.

GLA - IAD

GLAIAD

Glasgow Intl

Fri 24/10

05:50-18:54

2 stops18h 04m

Washington, D.C. Dulles Intl

Mon 3/11

14:16-10:45

2 stops15h 29m

£642

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 flights?

There are 4 cabin classes available to choose from on United Kingdom to Washington, D.C. Dulles Intl 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, Wednesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from United Kingdom. The lowest ticket price found for a Wednesday departure recently was £599. 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 £678.

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

The month of March is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from United Kingdom, with most prices found around £497. If you aren’t able to travel during the month of March, then book flights to Washington, D.C. Dulles Intl Airport from United Kingdom during November instead. Flights to Washington, D.C. Dulles Intl Airport in November, while not as cheap as those in March, still average around £509.

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 in the evening when flights can be purchased for as low as £522. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the afternoon when prices are around £627.

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

Fly from London Heathrow 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 £588 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 £539 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 AIRPORTFebruary15% cheaperFlying from London Heathrow Airport to Washington, D.C. Dulles Intl Airport costs on average just £505 in February
MOST EXPENSIVE MONTH TO FLY TO WASHINGTON, D.C. DULLES INTL AIRPORT FROM LONDON HEATHROW AIRPORTJuly18% more expensiveIt costs about £696 for flights to Washington, D.C. Dulles Intl Airport from London Heathrow Airport in July
MOST POPULAR MONTH TO FLY TO WASHINGTON, D.C. DULLES INTL AIRPORT FROM LONDON HEATHROW AIRPORTJuly272% 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

£237

Best Round-Trip Price

£332

Fastest flight time

19h 25m

Popular in

July
The best one-way flight price to Washington, D.C. from United Kingdom in the last 72 hours is £237 (London Stansted to Washington, D.C. Dulles Intl).
Search Deals
The best round-trip flight price to Washington, D.C. from United Kingdom in the last 72 hours is £332 (London Gatwick to Washington, D.C. Dulles Intl).
Search Deals
The fastest flight to Washington, D.C. from United Kingdom takes 19h 25m (London Luton to Washington, D.C. Dulles Intl).
Search Deals
July has the highest demand for flights to Washington, D.C., with a 13% 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, March 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 80 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 Wednesday 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 Evening 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 £220. 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 Orlando for £38. This is 84% 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 15 airlines that fly to Washington, D.C. Dulles Intl Airport, British Airways, Virgin Atlantic and Aer Lingus happen to be the most favoured based on our user data. British Airways is the most popular among the three airlines, with 32% 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 23 operators available for flights to Washington, D.C. Dulles Intl Airport as of August 2025.

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
Winchester
Laurel
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
Chantilly
College Park
Linthicum Heights
Gettysburg
Front Royal
Hanover
Cambridge
Ellicott City
Westminster
Arlington
Ashburn
Woodbridge

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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