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Dulles Intl

$437+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
STN — IAD
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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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 April 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$636
(Mytrip)

One-way from

$437
(Mytrip)

Popular in

March

Cheapest in

December

Average price

$509
Provider with most accurate pricing for London Stansted-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for London Stansted-Washington, D.C. Dulles Intl flights.
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From London Stansted to Washington, D.C. Dulles Intl
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One-way flight from London Stansted to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 29% potential increase in price ($263 potential increase over avg. RT price).
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Cheapest flight prices on average. 11% potential price decrease ($66 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 25, 2025.

This Mytrip deal was found by Cheapflights users on 4/25. 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.
Fri 6/131:55 pmSTN - IAD
2 stops35h 04mMultiple Airlines
Mon 6/1610:05 pmIAD - STN
2 stops17h 55mMultiple Airlines
Deal found 4/25$636
This Justfly.com deal was found by Cheapflights users on 4/24. 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.
Fri 7/257:25 amSTN - IAD
1 stop16h 40mRoyal Air Maroc
Sun 8/39:05 pmIAD - STN
1 stop28h 15mRoyal Air Maroc
Deal found 4/24$1,116

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 April 25, 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

Fri 6/13

1:55 pm-7:59 pm

2 stops35h 04m

Washington, D.C. Dulles Intl

Mon 6/16

10:05 pm-9:00 pm

2 stops17h 55m

$636

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 7/1

7:25 am-7:05 pm

1 stop16h 40m

Washington, D.C. Dulles Intl

Fri 9/5

9:05 pm-6:20 am

1 stop28h 15m

$1,142

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 5/4

12:45 pm-9:08 pm

3 stops37h 23m

$437

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 6/29

7:25 am-7:05 pm

1 stop16h 40m

$654

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

  • Most accurate provider: When it comes to deals on London Stansted Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Stansted Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Stansted Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Stansted Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Stansted Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Cheapflights Insights

Everything you need to know about your flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 April 25, 2025.
Royal Air Maroc
6.0
Okay
458 reviews

Comfort

6.1

Boarding

6.1

Crew

6.6

Overall

6.0

Entertainment

5.8

Food

5.8

Reviews

1 / 20
4.0
Okay

Chandrika,Jan 2025

SVQ - CMN

Here are the things that made our travel experience with airmaroc a stressful experience They did not confirm seats for our two children. They said the flight was full and they will have to upgrade others before they assign seats to us. Why would they do that for a confirmed reservation. And when we boarded, we saw that there were lot of seats in the upgrade that were empty and at least theee seats were empty even in economy class. The crew did not even know how to give proper boarding passes. They just printed out the boarding passes from Casablanca to Washington land it took 5 of them configure out how to give boarding passes from Seville to Casablanca for our kids. We had to rush through security, rush through passport control. In the second leg, they didn't even give us opportunity to sit together, they had all 4 of us all over the plane. Really disappointed with the airline and the incompetent crew. The food was worst, they gave meat(chicken) in Asian vegetarian meal. This happened both when going to Lisbon and when coming back to US. And the snack part was 4 veg slices with some sauce in a cold tortilla wrap and cold chicken in a bread which made both me and my son sick. On our outbound flight, none of the chair recliners worked in a 9 hour flight and the entertainment system also did not work and the crew did not even give us water when asked between meals On the inbound flight to Washington DC, the entertainment system audio was worst. Had static all along and had to watch only with subtitles. Worst air travel experience ever.
Royal Air Maroc
6.0
Okay
458 reviews
Royal Air Maroc
6.0
Okay
458 reviews

Comfort

6.1

Boarding

6.1

Crew

6.6

Overall

6.0

Entertainment

5.8

Food

5.8

Reviews

1 / 20
4.0
Okay

Chandrika,Jan 2025

SVQ - CMN

Here are the things that made our travel experience with airmaroc a stressful experience They did not confirm seats for our two children. They said the flight was full and they will have to upgrade others before they assign seats to us. Why would they do that for a confirmed reservation. And when we boarded, we saw that there were lot of seats in the upgrade that were empty and at least theee seats were empty even in economy class. The crew did not even know how to give proper boarding passes. They just printed out the boarding passes from Casablanca to Washington land it took 5 of them configure out how to give boarding passes from Seville to Casablanca for our kids. We had to rush through security, rush through passport control. In the second leg, they didn't even give us opportunity to sit together, they had all 4 of us all over the plane. Really disappointed with the airline and the incompetent crew. The food was worst, they gave meat(chicken) in Asian vegetarian meal. This happened both when going to Lisbon and when coming back to US. And the snack part was 4 veg slices with some sauce in a cold tortilla wrap and cold chicken in a bread which made both me and my son sick. On our outbound flight, none of the chair recliners worked in a 9 hour flight and the entertainment system also did not work and the crew did not even give us water when asked between meals On the inbound flight to Washington DC, the entertainment system audio was worst. Had static all along and had to watch only with subtitles. Worst air travel experience ever.

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 Royal Air Maroc is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $1,142.

  • 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 June is currently the most expensive (average of $383). 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 London Stansted Airport?

Book flights to London Stansted Airport if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Fairfax
Tysons
Springfield
Rockville
Fredericksburg
Gaithersburg
Silver Spring
Linthicum Heights
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Towson
National Harbor
Oxon Hill

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Top airline flying from Stansted to Dulles Intl

Discover the top airline that operate flights from Stansted to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$357Average$427FlexibilityNo cancel feeOn-timeN/A

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