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Shannon

$370+ Cheap flights from Reagan-National (DCA) 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SNN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Reagan-National to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 September 11, 2025.

Round-trip from

$646
(United Airlines)

One-way from

$370
(Kiwi.com)

Popular in

June

Cheapest in

December

Average price

$866
From Washington, D.C. Reagan-National to Shannon
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One-way flight from Washington, D.C. Reagan-National 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 Reagan-National to Shannon

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

This American Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 11/173:44 pmDCA - SNN
2 stops14h 46mAmerican Airlines
Wed 11/267:50 amSNN - DCA
2 stops17h 09mAmerican Airlines
Deal found 9/9$518
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 11/265:45 pmDCA - SNN
2 stops12h 45mAmerican Airlines
Sat 12/67:50 amSNN - DCA
2 stops15h 11mAmerican Airlines
Deal found 9/9$606
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:00 pmDCA - SNN
1 stop10h 15mUnited Airlines
Tue 10/1412:30 pmSNN - DCA
1 stop10h 17mUnited Airlines
Deal found 9/8$615
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:00 pmDCA - SNN
1 stop10h 15mUnited Airlines
Tue 10/1412:30 pmSNN - DCA
1 stop10h 17mUnited Airlines
Deal found 9/8$646
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/77:00 pmDCA - SNN
1 stop10h 15mUnited Airlines
Thu 10/1612:30 pmSNN - DCA
1 stop10h 17mUnited Airlines
Deal found 9/8$665
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/244:38 pmDCA - SNN
2 stops13h 42mAmerican Airlines
Fri 10/317:50 amSNN - DCA
2 stops18h 16mAmerican Airlines
Deal found 9/9$687
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/57:00 pmDCA - SNN
1 stop10h 15mUnited Airlines
Thu 10/1612:30 pmSNN - DCA
1 stop10h 17mUnited Airlines
Deal found 9/8$696
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:00 pmDCA - SNN
1 stop10h 15mUnited Airlines
Fri 10/1012:30 pmSNN - DCA
1 stop10h 17mUnited Airlines
Deal found 9/8$706
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.
Wed 9/174:40 pmDCA - SNN
2 stops13h 40mAmerican Airlines
Fri 10/177:40 amSNN - DCA
2 stops19h 20mAmerican Airlines
Deal found 9/10$709
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.
Sun 10/268:29 amDCA - SNN
1 stop17h 51mAmerican Airlines
Sun 11/22:45 pmSNN - DCA
1 stop13h 03mAmerican Airlines
Deal found 9/10$754

Cheapflights Fare Finder

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

Fly from

Reagan-National

Fly to

Shannon

Route

Depart

Return

Price

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Mon 11/17

3:44 pm-11:30 am

2 stops14h 46m

Shannon

Wed 11/26

7:50 am-7:59 pm

2 stops17h 09m

$518

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 11/26

5:45 pm-11:30 am

2 stops12h 45m

Shannon

Sat 12/6

7:50 am-6:01 pm

2 stops15h 11m

$606

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 10/7

7:00 pm-10:15 am

1 stop10h 15m

Shannon

Wed 10/15

12:30 pm-5:47 pm

1 stop10h 17m

$615

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 10/7

7:00 pm-10:15 am

1 stop10h 15m

Shannon

Tue 10/14

12:30 pm-5:47 pm

1 stop10h 17m

$615

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 10/5

7:00 pm-10:15 am

1 stop10h 15m

Shannon

Tue 10/14

12:30 pm-5:47 pm

1 stop10h 17m

$646

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 9/17

7:25 am-7:30 am

1 stop19h 05m

Shannon

Fri 10/17

12:30 pm-7:36 pm

1 stop12h 06m

$646

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Mon 10/6

7:00 pm-10:15 am

1 stop10h 15m

Shannon

Wed 10/15

12:30 pm-5:47 pm

1 stop10h 17m

$646

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Mon 10/6

7:00 pm-10:15 am

1 stop10h 15m

Shannon

Tue 10/14

12:30 pm-8:06 pm

1 stop12h 36m

$646

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Mon 9/22

7:25 am-7:30 am

1 stop19h 05m

Shannon

Fri 10/17

12:30 pm-5:47 pm

1 stop10h 17m

$646

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Fri 10/24

4:38 pm-11:20 am

2 stops13h 42m

Shannon

Fri 10/31

7:50 am-10:06 pm

2 stops18h 16m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 24 results
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Best time to book a flight from Reagan-National to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Reagan-National 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 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 September 11, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Reagan-National Airport to Shannon, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Reagan-National 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. Reagan-National?

    Most people fly into Shannon (SNN) if they book a flight to Shannon from Washington, D.C. Reagan-National. On average, Shannon has 0 inbound flights from Washington, D.C. Reagan-National per day from 2 airlines. Shannon is conveniently located just 2.1 mi from Shannon’s city center.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Shannon, Clare?

    American Airlines and United Airlines can get you from Washington, D.C. Reagan-National Airport to Shannon, Clare in just under 10h 15m. Your travel time can differ by up to 4h 31m. Washington, D.C. Reagan-National Airport and Shannon, Clare are separated by a distance of 3284 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from Washington, D.C. Reagan-National Airport to Shannon, Clare round-trip from $685. Another airline that can offer you cheap pricing is American Airlines.

  • Can I find deals for flights from Reagan-National to Shannon that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Shannon?

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

  • Can I find deals for business class flights from Reagan-National to Shannon?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to Shannon, Clare?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Shannon, Clare (average of $533). Flying from Washington, D.C. Reagan-National 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
Ennis

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Top 2 airlines flying from Reagan-National to Shannon

Discover the top 2 airlines that operate flights from Reagan-National 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$685Average$892FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$790Average$996FlexibilityNo cancel feeOn-time71%

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