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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $327

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 5/24. 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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0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:20 pm - 10:50 pm
IAD
-
LTN
21h 30m
2 stops
Multiple Airlines Logo
1:05 pm - 5:00 pm
LTN
-
IAD
32h 55m
2 stops
$593Multiple Airlines
Sat, Apr 25 - Tue, Apr 28
Multiple Airlines Logo
5:45 pm - 9:05 pm
IAD
-
LTN
22h 20m
2 stops
Multiple Airlines Logo
9:50 pm - 3:10 pm
LTN
-
IAD
22h 20m
2 stops
$594Multiple Airlines
Thu, Apr 30 - Wed, May 6
Multiple Airlines Logo
5:15 pm - 9:30 am
IAD
-
LTN
11h 15m
1 stop
Multiple Airlines Logo
9:00 am - 3:45 pm
LTN
-
IAD
11h 45m
1 stop
$598Multiple Airlines
Thu, May 7 - Sun, May 10
Multiple Airlines Logo
8:55 pm - 2:00 pm
IAD
-
LTN
12h 05m
1 stop
Multiple Airlines Logo
1:50 pm - 7:25 pm
LTN
-
IAD
10h 35m
1 stop
$599Multiple Airlines
Fri, May 8 - Wed, May 13
Multiple Airlines Logo
8:55 pm - 2:00 pm
IAD
-
LTN
12h 05m
1 stop
Multiple Airlines Logo
1:10 pm - 7:35 pm
LTN
-
IAD
11h 25m
1 stop
$601Multiple Airlines
Fri, May 8 - Tue, May 12
Multiple Airlines Logo
8:20 pm - 12:50 am
IAD
-
LTN
23h 30m
2 stops
Multiple Airlines Logo
12:45 pm - 5:00 pm
LTN
-
IAD
33h 15m
2 stops
$602Multiple Airlines
Thu, Apr 16 - Sun, Apr 26
Multiple Airlines Logo
8:20 pm - 11:15 pm
IAD
-
LTN
21h 55m
3 stops
Multiple Airlines Logo
1:05 pm - 5:00 pm
LTN
-
IAD
32h 55m
2 stops
$604Multiple Airlines
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
5:15 pm - 9:15 am
IAD
-
LTN
11h 00m
1 stop
Multiple Airlines Logo
1:10 pm - 7:35 pm
LTN
-
IAD
11h 25m
1 stop
$605Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
8:20 pm - 9:15 pm
IAD
-
LTN
19h 55m
2 stops
Multiple Airlines Logo
1:05 pm - 5:00 pm
LTN
-
IAD
32h 55m
2 stops
$607Multiple Airlines
Wed, Apr 22 - Sun, Apr 26
Multiple Airlines Logo
5:15 pm - 9:00 am
IAD
-
LTN
10h 45m
1 stop
Multiple Airlines Logo
1:10 pm - 7:35 pm
LTN
-
IAD
11h 25m
1 stop
$608Multiple Airlines
Wed, May 6 - Tue, May 12

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated March 9, 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 round-trip

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sat 4/25

8:20 pm-10:50 pm

2 stops21h 30m

London Luton

Tue 4/28

1:05 pm-5:00 pm

2 stops32h 55m

$593

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Thu 4/30

5:45 pm-9:05 pm

2 stops22h 20m

London Luton

Wed 5/6

9:50 pm-3:10 pm

2 stops22h 20m

$594

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Thu 5/7

5:15 pm-9:30 am

1 stop11h 15m

London Luton

Sun 5/10

9:00 am-3:45 pm

1 stop11h 45m

$598

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Fri 5/8

8:55 pm-2:00 pm

1 stop12h 05m

London Luton

Wed 5/13

1:50 pm-7:25 pm

1 stop10h 35m

$599

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Fri 5/8

8:55 pm-2:00 pm

1 stop12h 05m

London Luton

Tue 5/12

1:10 pm-7:35 pm

1 stop11h 25m

$601

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Thu 4/16

8:20 pm-12:50 am

2 stops23h 30m

London Luton

Sun 4/26

12:45 pm-5:00 pm

2 stops33h 15m

$602

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 4/19

8:20 pm-11:15 pm

3 stops21h 55m

London Luton

Tue 4/28

1:05 pm-5:00 pm

2 stops32h 55m

$604

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Tue 5/5

5:15 pm-9:15 am

1 stop11h 00m

London Luton

Tue 5/12

1:10 pm-7:35 pm

1 stop11h 25m

$605

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 4/22

8:20 pm-9:15 pm

2 stops19h 55m

London Luton

Sun 4/26

1:05 pm-5:00 pm

2 stops32h 55m

$607
Quickest round-trip

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 5/6

5:15 pm-9:00 am

1 stop10h 45m

London Luton

Tue 5/12

1:10 pm-7:35 pm

1 stop11h 25m

$608

Flights are sorted by cheapest round-trip 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 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 which experiences the fewest number of 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 round-trip 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.
Search flight deals

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

    Washington, D.C. Dulles Intl and London Luton are 3659.1 mi apart from one another. Flights usually cover this in 9h 25m, depending on flying conditions and air traffic around both airports.

  • 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 updated daily.

  • 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 required travel and health documents for your London Luton Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Luton Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Milton Keynes
Luton
Dover
Slough
Crawley
Hayes
Wembley
Dartford
Croydon
Brentwood
Harrow
Watford
Guildford
Stansted
Cobham
Folkestone
Romford
Richmond

Why use momondo?

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

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

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

Flights from Washington, D.C. to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Yes momondo offers price alerts on flights to London from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London Luton Airport trip

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