Dulles Intl

$536+ Cheap flights from Stansted (STN) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
STN — IAD
Jul 27 — Aug 31
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Cheap flight deals from Stansted to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 22, 2025.

Round-trip from

$615
(Mytrip)

One-way from

$536
(Kiwi.com)

Popular in

March

Cheapest in

December

Average price

$654
From London Stansted to Washington, D.C. Dulles Intl
One-way flight from London Stansted to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 35% potential increase in price ($363 potential increase over avg. RT price).
Cheapest flight prices on average. 12% potential price decrease ($72 potential savings vs. average RT price).
Average for round-trip flights in July 2025

Find flight deals from Stansted to Dulles Intl

Cheapest flights from Stansted to Dulles Intl
Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2025.

This Mytrip deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:45 pmSTN - IAD
2 stops34h 14mMultiple Airlines
Sat 9/1310:05 pmIAD - STN
3 stops21h 15mMultiple Airlines
Deal found 7/21$615
This Justfly.com deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:50 pmSTN - IAD
1 stop28h 35mLufthansa
Wed 10/110:20 pmIAD - STN
1 stop15h 40mLufthansa
Deal found 7/22$633

Cheapflights Fare Finder

Customize your flight search to find flights from Stansted to Dulles Intl 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, Cheapflights users made 2,558,603 searches. Data last updated July 22, 2025.
Use the filters below to find and compare flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Stansted

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 9/9

2:45 pm-7:59 pm

2 stops34h 14m

Washington, D.C. Dulles Intl

Sat 9/13

10:05 pm-12:20 am

3 stops21h 15m

$615

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 9/24

7:50 pm-7:25 pm

1 stop28h 35m

Washington, D.C. Dulles Intl

Wed 10/1

10:20 pm-7:00 pm

1 stop15h 40m

$633

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 9/21

7:00 am-7:59 pm

2 stops17h 59m

$536

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/21

Best time to book a flight from Stansted to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Stansted with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated July 22, 2025.
Get a feel of what it's like to fly with Lufthansa from London Stansted Airport to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

6.8

Food

6.3

Overall

6.8

Boarding

7.0

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

BHX - FRA

Not as good as when I traveled many years ago. My main problem was missing my flight from Frankfurt to Birmingham because of very late start from LA and was told delay wil be made up but then I had to wait 5 hours for my next booked fight . Asian vegetarian food was skimpy and horrible.

Comfort

6.8

Food

6.3

Overall

6.8

Boarding

7.0

Entertainment

6.4

Crew

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

BHX - FRA

Not as good as when I traveled many years ago. My main problem was missing my flight from Frankfurt to Birmingham because of very late start from LA and was told delay wil be made up but then I had to wait 5 hours for my next booked fight . Asian vegetarian food was skimpy and horrible.

Related info for your journey

Find useful and relevant information for your journey from Stansted to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What is the cheapest airline to fly from London Stansted Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Flying on Lufthansa is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $633. You may be able to fly from London Stansted Airport to Washington, D.C. Dulles Intl Airport for 2% less than the average price by searching for this airline.

  • Can I find deals for flights from Stansted to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Stansted to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Stansted to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Dulles Intl.

  • Can I find deals for business class flights from Stansted to Dulles Intl?

    Yes. Cheapflights offers flight deals from Stansted to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport (average of $309). Flying from London Stansted Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Easton
Fairfax
Towson
Linthicum Heights
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
National Harbor
Manassas
Dundalk

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