Cheap flights from Washington, D.C. Dulles Intl Airport to London from £279

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to London departing on 11/6. 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
0 bags
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:55 - 12:35
IAD
-
LTN
21h 40m
3 stops
Multiple Airlines Logo
13:35 - 15:10
LTN
-
IAD
30h 35m
2 stops
£556Multiple Airlines
Wed, 27 May - Thu, 4 Jun
Multiple Airlines Logo
23:20 - 19:40
IAD
-
LTN
15h 20m
2 stops
Multiple Airlines Logo
09:40 - 20:29
LTN
-
IAD
15h 49m
2 stops
£562Multiple Airlines
Sun, 10 May - Tue, 19 May
Multiple Airlines Logo
17:15 - 12:45
IAD
-
LTN
14h 30m
2 stops
Multiple Airlines Logo
13:40 - 15:10
LTN
-
IAD
30h 30m
2 stops
£568Multiple Airlines
Mon, 1 Jun - Tue, 9 Jun
Multiple Airlines Logo
20:30 - 22:50
IAD
-
LTN
21h 20m
2 stops
Multiple Airlines Logo
20:25 - 21:25
LTN
-
IAD
30h 00m
3 stops
£574Multiple Airlines
Tue, 12 May - Fri, 15 May
Multiple Airlines Logo
23:20 - 19:40
IAD
-
LTN
15h 20m
2 stops
Multiple Airlines Logo
17:30 - 15:10
LTN
-
IAD
26h 40m
2 stops
£576Multiple Airlines
Sun, 10 May - Thu, 14 May
Multiple Airlines Logo
20:30 - 20:30
IAD
-
LTN
19h 00m
3 stops
Multiple Airlines Logo
07:45 - 19:45
LTN
-
IAD
16h 00m
2 stops
£577Multiple Airlines
Sun, 18 Oct - Sun, 25 Oct
Multiple Airlines Logo
23:20 - 22:20
IAD
-
LTN
18h 00m
2 stops
Multiple Airlines Logo
12:45 - 15:10
LTN
-
IAD
31h 25m
2 stops
£579Multiple Airlines
Sun, 10 May - Thu, 14 May
Multiple Airlines Logo
23:20 - 19:40
IAD
-
LTN
15h 20m
2 stops
Multiple Airlines Logo
14:45 - 15:10
LTN
-
IAD
29h 25m
2 stops
£582Multiple Airlines
Sun, 10 May - Tue, 26 May
Multiple Airlines Logo
20:30 - 13:05
IAD
-
LTN
11h 35m
1 stop
Multiple Airlines Logo
06:15 - 19:20
LTN
-
IAD
18h 05m
1 stop
£583Multiple Airlines
Sat, 10 Oct - Wed, 14 Oct
Multiple Airlines Logo
23:20 - 19:40
IAD
-
LTN
15h 20m
2 stops
Multiple Airlines Logo
17:30 - 15:10
LTN
-
IAD
26h 40m
2 stops
£584Multiple Airlines
Sun, 10 May - Thu, 14 May

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport to London Luton Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 1 May 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Luton Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 27/5

09:55-12:35

3 stops21h 40m

London Luton

Thu 4/6

13:35-15:10

2 stops30h 35m

£556

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 10/5

23:20-19:40

2 stops15h 20m

London Luton

Tue 19/5

09:40-20:29

2 stops15h 49m

£562

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Mon 1/6

17:15-12:45

2 stops14h 30m

London Luton

Tue 9/6

13:40-15:10

2 stops30h 30m

£568

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Tue 12/5

20:30-22:50

2 stops21h 20m

London Luton

Fri 15/5

20:25-21:25

3 stops30h 00m

£574

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 10/5

23:20-19:40

2 stops15h 20m

London Luton

Thu 14/5

17:30-15:10

2 stops26h 40m

£576

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 18/10

20:30-20:30

3 stops19h 00m

London Luton

Sun 25/10

07:45-19:45

2 stops16h 00m

£577

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 10/5

23:20-22:20

2 stops18h 00m

London Luton

Thu 14/5

12:45-15:10

2 stops31h 25m

£579

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 10/5

23:20-19:40

2 stops15h 20m

London Luton

Tue 26/5

14:45-15:10

2 stops29h 25m

£582
Fastest return journey

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sat 10/10

20:30-13:05

1 stop11h 35m

London Luton

Wed 14/10

06:15-19:20

1 stop18h 05m

£583

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 10/5

23:20-19:40

2 stops15h 20m

London Luton

Thu 14/5

17:30-15:10

2 stops26h 40m

£584

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to London Luton Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How often are flights from Washington, D.C. to London delayed?

Historically, on average around 25% of flights between Washington, D.C. and London have experienced a delay on any given week. The average delay length over the past 12 months has been 21 minutes.

What is the most punctual flight time for Washington, D.C. to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

When to book flights from Washington, D.C. Dulles Intl Airport to London Luton Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to London Luton Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. Dulles Intl Airport to London Luton Airport (IAD to LTN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to London Luton Airport

Fastest flight time

9h 25m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Luton Airport takes 9h 25m
There are no direct flights from Washington, D.C. Dulles Intl Airport to London Luton Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to London Luton Airport.

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

  • How far is Washington, D.C. Dulles Intl to London Luton by plane?

    The distance between Washington, D.C. Dulles Intl and London Luton is about 3659.1 mi. By plane, this route typically takes 9h 25m.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to London Luton Airport are refreshed on a daily basis.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to London Luton Airport.

  • What documentation or ID do you need to fly to London Luton Airport?

    The travel and health documents required for your trip to London Luton Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Luton Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Slough
Wembley
Maidstone
Ipswich
Southend-on-Sea
Ilford
Canterbury
Guildford
Hayes
Chelmsford
Folkestone
Dover
Chichester
Bedford
Ramsgate
Harlow

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to London . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Washington, D.C. to London flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington, D.C. and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Washington, D.C. to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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