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Shannon

$421+ Cheap flights from Dulles Intl (IAD) to Shannon (SNN)

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SNN
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Dulles Intl to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Shannon (SNN). 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 septiembre 11, 2025.

Round-trip from

$503
(American Airlines)

One-way from

$421
(American Airlines)

Popular in

June

Cheapest in

December

Average price

$866
From Washington, D.C. Dulles Intl to Shannon
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One-way flight from Washington, D.C. Dulles Intl to Shannon
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Highest demand for flights based on searches. 9% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Dulles Intl to Shannon

Cheapest flights from Dulles Intl to Shannon
Explore the most affordable flight options available from Dulles Intl to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/1910:45 pmIAD - SNN
1 stop12h 25mAmerican Airlines
mar. 11/47:50 amSNN - IAD
1 stop12h 45mAmerican Airlines
Deal found 9/10$503
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/267:20 pmIAD - SNN
1 stop12h 10mAmerican Airlines
dom. 11/27:50 amSNN - IAD
1 stop12h 45mAmerican Airlines
Deal found 9/10$552
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/266:20 pmIAD - SNN
1 stop12h 10mAmerican Airlines
mié. 1/147:50 amSNN - IAD
1 stop17h 05mAmerican Airlines
Deal found 9/10$592
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/255:50 pmIAD - SNN
1 stop13h 40mAmerican Airlines
sáb. 11/17:50 amSNN - IAD
1 stop17h 05mAmerican Airlines
Deal found 9/10$602
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/910:45 pmIAD - SNN
1 stop12h 25mAmerican Airlines
jue. 10/167:40 amSNN - IAD
1 stop14h 55mAmerican Airlines
Deal found 9/11$623
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/178:25 pmIAD - SNN
2 stops14h 25mAmerican Airlines
mié. 10/297:50 amSNN - IAD
1 stop17h 05mAmerican Airlines
Deal found 9/11$631
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/810:45 pmIAD - SNN
1 stop12h 25mAmerican Airlines
dom. 10/127:40 amSNN - IAD
1 stop17h 40mAmerican Airlines
Deal found 9/11$633

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Shannon 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Shannon that are best for you.

Fly from

Dulles Intl

Fly to

Shannon

Route

Depart

Return

Price

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

dom. 10/19

8:25 pm-4:10 pm

2 stops14h 45m

Shannon

mar. 11/4

7:50 am-3:35 pm

1 stop12h 45m

$503

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

dom. 10/26

7:20 pm-11:30 am

1 stop12h 10m

Shannon

dom. 11/2

7:50 am-3:35 pm

1 stop12h 45m

$552

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

jue. 1/15

9:45 pm-4:45 pm

1 stop14h 00m

Shannon

dom. 1/25

7:50 am-7:55 pm

1 stop17h 05m

$602

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

sáb. 10/25

5:50 pm-12:30 pm

1 stop13h 40m

Shannon

sáb. 11/1

7:50 am-8:55 pm

1 stop17h 05m

$602

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

jue. 10/9

10:45 pm-4:10 pm

1 stop12h 25m

Shannon

jue. 10/16

7:40 am-5:35 pm

1 stop14h 55m

$623

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

vie. 10/17

8:25 pm-3:50 pm

2 stops14h 25m

Shannon

mié. 10/29

7:50 am-9:55 am

2 stops30h 05m

$648

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

lun. 9/22

7:25 pm-8:35 pm

1 stop20h 10m

Shannon

vie. 10/17

7:40 am-8:15 pm

1 stop17h 35m

$694

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

vie. 9/26

5:50 pm-3:50 pm

1 stop17h 00m

Shannon

mié. 10/8

7:40 am-8:15 pm

1 stop17h 35m

$704

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

mar. 10/7

10:45 pm-4:10 pm

1 stop12h 25m

$421

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

mié. 10/8

5:50 pm-11:20 am

1 stop12h 30m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
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Best time to book a flight from Dulles Intl to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Shannon

What is the cheapest time of day to fly from IAD to SNN?

Find hourly flight availability from Dulles Intl to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Shannon, Clare in the evening. If you’re flexible enough to do this you can expect to save up to 22% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Shannon

Get insights into the airlines that provide service to Shannon. 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 Shannon. Reviews last updated septiembre 11, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines from Washington, D.C. Dulles Intl Airport to Shannon to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,385 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Shannon from Washington, D.C. Dulles Intl?

    Shannon (SNN) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to Shannon. You should not have trouble finding flights to Shannon from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the Shannon airport from Washington, D.C. Dulles Intl. It is only a 2.1 mi journey from Shannon (SNN) to Shannon’s city center.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Shannon, Clare?

    For as low as $503, American Airlines can have you in Shannon, Clare from Washington, D.C. Dulles Intl Airport in 14h 45m. The distance between Washington, D.C. Dulles Intl Airport and Shannon, Clare is about 3296 mi.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Shannon, Clare round-trip?

    Flying on United Airlines is currently your cheapest option to Shannon, Clare, with prices starting at $634. Additional round-trip tickets that might be worth considering are offered by KLM and Delta, with the lowest prices starting at $643 and $644, respectively.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Shannon, Clare one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $421. British Airways flights start at $521 while deals on Air Canada start at $522 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Shannon 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 Washington, D.C. Dulles Intl Airport to Shannon, Clare?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Shannon, Clare (average of $533). Flying from Washington, D.C. Dulles Intl Airport to Shannon, Clare in June is currently the most expensive (average of $926). 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 Shannon?

Book flights to Shannon if you plan to visit one of these locations
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Top 4 airlines flying from Dulles Intl to Shannon

Discover the top 4 airlines that operate flights from Dulles Intl to Shannon. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$634Average$704FlexibilityNo cancel feeOn-time69%
KLMCheapest$643Average$645FlexibilityNo cancel feeOn-time75%
DeltaCheapest$644Average$936FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$796Average$899FlexibilityNo cancel feeOn-time70%

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