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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $370

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 12/9. 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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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
8:30 pm - 6:05 pm
IAD
-
STN
16h 35m1 stop
Multiple Airlines Logo
7:35 am - 5:15 pm
STN
-
IAD
14h 40m1 stop
$578Multiple Airlines
ה', ינו' 29 - ב', פב​​​​​​​' 2
Multiple Airlines Logo
12:23 pm - 11:00 am
IAD
-
STN
17h 37m2 stops
Multiple Airlines Logo
8:45 am - 6:15 pm
STN
-
IAD
13h 30m1 stop
$579Multiple Airlines
ה', מרץ 5 - ה', מרץ 12
Multiple Airlines Logo
7:40 pm - 2:15 pm
IAD
-
STN
13h 35m2 stops
Multiple Airlines Logo
8:05 am - 6:30 pm
STN
-
IAD
15h 25m2 stops
$583Multiple Airlines
ה', ינו' 8 - ה', ינו' 22
Multiple Airlines Logo
8:30 pm - 6:05 pm
IAD
-
STN
16h 35m1 stop
Multiple Airlines Logo
6:00 am - 5:15 pm
STN
-
IAD
16h 15m1 stop
$584Multiple Airlines
ה', פב​​​​​​​' 19 - ד', פב​​​​​​​' 25
Multiple Airlines Logo
7:40 pm - 11:05 pm
IAD
-
STN
22h 25m2 stops
Multiple Airlines Logo
6:10 am - 6:30 pm
STN
-
IAD
17h 20m2 stops
$585Multiple Airlines
ו', פב​​​​​​​' 20 - ו', פב​​​​​​​' 27
Multiple Airlines Logo
4:30 pm - 6:20 pm
IAD
-
STN
20h 50m2 stops
Multiple Airlines Logo
6:45 pm - 3:50 pm
STN
-
IAD
26h 05m2 stops
$586Multiple Airlines
ג', ינו' 27 - ב', פב​​​​​​​' 2
Multiple Airlines Logo
7:40 pm - 7:40 pm
IAD
-
STN
19h 00m2 stops
Multiple Airlines Logo
6:10 am - 6:30 pm
STN
-
IAD
17h 20m2 stops
$588Multiple Airlines
א', ינו' 11 - ו', ינו' 16
Multiple Airlines Logo
5:05 pm - 9:50 am
IAD
-
STN
11h 45m1 stop
Multiple Airlines Logo
8:30 am - 3:35 pm
STN
-
IAD
12h 05m1 stop
$589Multiple Airlines
ד', ינו' 21 - ד', ינו' 28
Multiple Airlines Logo
9:45 am - 11:25 pm
IAD
-
STN
32h 40m3 stops
Multiple Airlines Logo
5:00 pm - 3:50 pm
STN
-
IAD
27h 50m2 stops
$590Multiple Airlines
ש', ינו' 17 - ג', ינו' 20
Multiple Airlines Logo
5:05 pm - 9:50 am
IAD
-
STN
11h 45m1 stop
Multiple Airlines Logo
8:30 am - 3:35 pm
STN
-
IAD
12h 05m1 stop
$591Multiple Airlines
ד', ינו' 21 - ד', ינו' 28

Royal Air Maroc flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport

Our best Royal Air Maroc deals on Washington, D.C. Dulles Intl Airport to London Stansted Airport flight tickets
Royal Air Maroc
Dec 7
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 10
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$652
Find similar
Royal Air Maroc
Dec 7
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 14
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$773
Find similar
Royal Air Maroc
Dec 7
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 10
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$799
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to London Stansted 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 דצמבר 6, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ה' 1/29

8:30 pm-6:05 pm

1 stop16h 35m

London Stansted

ב' 2/2

7:35 am-5:15 pm

1 stop14h 40m

$578

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ה' 3/5

12:23 pm-11:00 am

2 stops17h 37m

London Stansted

ה' 3/12

8:45 am-6:15 pm

1 stop13h 30m

$579

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ה' 1/8

7:40 pm-2:15 pm

2 stops13h 35m

London Stansted

ה' 1/22

8:05 am-6:30 pm

2 stops15h 25m

$583

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ה' 2/19

8:30 pm-6:05 pm

1 stop16h 35m

London Stansted

ד' 2/25

6:00 am-5:15 pm

1 stop16h 15m

$584

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ו' 2/20

7:40 pm-11:05 pm

2 stops22h 25m

London Stansted

ו' 2/27

6:10 am-6:30 pm

2 stops17h 20m

$585

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ג' 1/27

4:30 pm-6:20 pm

2 stops20h 50m

London Stansted

ב' 2/2

6:45 pm-3:50 pm

2 stops26h 05m

$586

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

א' 1/11

7:40 pm-7:40 pm

2 stops19h 00m

London Stansted

ו' 1/16

6:10 am-6:30 pm

2 stops17h 20m

$588

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ד' 1/21

5:05 pm-9:50 am

1 stop11h 45m

London Stansted

ד' 1/28

8:30 am-3:35 pm

1 stop12h 05m

$589

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ש' 1/17

9:45 am-11:25 pm

3 stops32h 40m

London Stansted

ג' 1/20

5:00 pm-3:50 pm

2 stops27h 50m

$590

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

ד' 1/21

5:05 pm-9:50 am

1 stop11h 45m

London Stansted

ד' 1/28

8:30 am-3:35 pm

1 stop12h 05m

$591

Flights are sorted by cheapest round-trip flights 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 Stansted 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

What is the cheapest day to depart on your flight to London Stansted Airport?

The cheapest day to depart on your flight to London Stansted Airport is on a Tuesday when prices can be found for as low as $457. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $631.

What is the cheapest time of day to depart on your flight to London Stansted Airport?

Our most recent data shows that the best time of day to fly to London Stansted Airport is in the afternoon. Flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport during this time can be as low as $509. In contrast, the most expensive time of day to depart to London Stansted Airport is in the evening when prices are around $513.

When to book flights from Washington, D.C. Dulles Intl Airport to London Stansted 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 Stansted 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 Stansted Airport (IAD to STN) 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 Stansted Airport

Fastest flight time

11h 30m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Stansted Airport takes 11h 30m
There are no direct flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to London Stansted Airport.
Search flight deals

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

    The distance between Washington, D.C. Dulles Intl and London Stansted is about 3683.3 mi. Typically, this will take 9h 45m by plane in normal conditions.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to London Stansted Airport.

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

    The required travel and health documents for your London Stansted 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 Stansted 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
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge
Stansted
Chelmsford

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Washington, D.C..

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

All flight searches from Washington, D.C. to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Washington, D.C. to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington, D.C. and alert you when they change.

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