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Cheap flights from Washington, D.C. Dulles Intl Airport to London from £274

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 30/1. 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 return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:40 - 15:25
IAD
-
LTN
13h 45m1 stop
Multiple Airlines Logo
06:15 - 15:45
LTN
-
IAD
14h 30m1 stop
£394Multiple Airlines
mer., 29 avr. - mer., 6 mai
Multiple Airlines Logo
17:15 - 09:00
IAD
-
LTN
10h 45m1 stop
Multiple Airlines Logo
06:15 - 15:45
LTN
-
IAD
14h 30m1 stop
£401Multiple Airlines
mer., 1 avr. - mer., 8 avr.
Multiple Airlines Logo
18:05 - 08:35
IAD
-
LTN
10h 30m1 stop
Multiple Airlines Logo
06:00 - 20:30
LTN
-
IAD
18h 30m1 stop
£407Multiple Airlines
mer., 11 mars - lun., 16 mars
Multiple Airlines Logo
17:05 - 08:35
IAD
-
LTN
10h 30m1 stop
Multiple Airlines Logo
06:00 - 15:35
LTN
-
IAD
14h 35m1 stop
£408Multiple Airlines
lun., 9 févr. - lun., 16 févr.
Multiple Airlines Logo
17:05 - 15:25
IAD
-
LTN
17h 20m1 stop
Multiple Airlines Logo
08:05 - 15:35
LTN
-
IAD
12h 30m1 stop
£409Multiple Airlines
ven., 23 janv. - dim., 25 janv.
Multiple Airlines Logo
17:05 - 08:45
IAD
-
LTN
10h 40m1 stop
Multiple Airlines Logo
06:00 - 15:35
LTN
-
IAD
14h 35m1 stop
£410Multiple Airlines
jeu., 22 janv. - lun., 26 janv.
Multiple Airlines Logo
09:45 - 19:25
IAD
-
LTN
28h 40m2 stops
Multiple Airlines Logo
20:50 - 16:50
LTN
-
IAD
24h 00m2 stops
£411Multiple Airlines
mer., 4 mars - sam., 14 mars
Multiple Airlines Logo
18:00 - 20:05
IAD
-
LTN
21h 05m2 stops
Multiple Airlines Logo
09:00 - 15:35
LTN
-
IAD
11h 35m1 stop
£412Multiple Airlines
mar., 3 févr. - mar., 10 févr.
Multiple Airlines Logo
17:05 - 07:35
IAD
-
LTN
9h 30m1 stop
Multiple Airlines Logo
06:50 - 16:35
LTN
-
IAD
13h 45m1 stop
£413Multiple Airlines
sam., 7 mars - mer., 11 mars
Multiple Airlines Logo
20:30 - 22:20
IAD
-
LTN
20h 50m2 stops
Multiple Airlines Logo
14:40 - 17:15
LTN
-
IAD
31h 35m2 stops
£414Multiple Airlines
mer., 4 févr. - mer., 11 févr.

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 8 janvier 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

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mer. 29/4

20:40-15:25

1 stop13h 45m

London Luton

mer. 6/5

06:15-15:45

1 stop14h 30m

£394

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mer. 1/4

17:15-09:00

1 stop10h 45m

London Luton

mer. 8/4

06:15-15:45

1 stop14h 30m

£401

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mer. 11/3

18:05-08:35

1 stop10h 30m

London Luton

lun. 16/3

06:00-20:30

1 stop18h 30m

£407

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

lun. 9/2

17:05-08:35

1 stop10h 30m

London Luton

lun. 16/2

06:00-15:35

1 stop14h 35m

£408

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

ven. 23/1

17:05-15:25

1 stop17h 20m

London Luton

dim. 25/1

08:05-15:35

1 stop12h 30m

£409

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

jeu. 22/1

17:05-08:45

1 stop10h 40m

London Luton

lun. 26/1

06:00-15:35

1 stop14h 35m

£410

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mer. 4/3

09:45-19:25

2 stops28h 40m

London Luton

sam. 14/3

20:50-16:50

2 stops24h 00m

£411

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mar. 3/2

18:00-20:05

2 stops21h 05m

London Luton

mar. 10/2

09:00-15:35

1 stop11h 35m

£412

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

sam. 7/3

17:05-07:35

1 stop9h 30m

London Luton

mer. 11/3

06:50-16:35

1 stop13h 45m

£413

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

mer. 4/2

20:30-22:20

2 stops20h 50m

London Luton

mer. 11/2

14:40-17:15

2 stops31h 35m

£414

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?

Wednesday 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.

Which airline has the best punctuality record on Washington, D.C. to London flights?

According to our data, Air Seoul have had the fewest delays on this route over the last 12 months, with about 100% of their flights experiencing any sort of delay.

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 30m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Luton Airport takes 9h 30m
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?

    The distance between Washington, D.C. Dulles Intl and London Luton is about 3659.1 mi. By plane, this route typically takes 9h 30m.

  • 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
Maidstone
Slough
Southend-on-Sea
Canterbury
Ipswich
Ilford
Guildford
Chelmsford
Hayes
Dover
Worthing
Hounslow
Colchester
Bedford
Ramsgate
Folkestone

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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