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Shannon

$450+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SNN
Aug 15 — Aug 221
Sat 8/15
Sat 8/22
1 adult, Economy
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Cheap 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 July 16, 2026.

This United Airlines deal was found by Cheapflights users on 7/15. 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 8/132:00 pm
DCA
-
SNN
1 stop12h 30m
United Airlines
Sat 8/299:30 am
SNN
-
DCA
1 stop18h 22m
United Airlines
Deal found 7/15$699
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Wed 8/268:30 am
DCA
-
SNN
1 stop18h 00m
United Airlines
Sun 8/309:30 am
SNN
-
DCA
1 stop18h 22m
United Airlines
Deal found 7/12$708
This Delta deal was found by Cheapflights users on 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2312:27 pm
DCA
-
SNN
2 stops17h 43m
Delta
Mon 8/311:05 pm
SNN
-
DCA
1 stop14h 58m
Delta
Deal found 7/12$712
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 9/47:10 pm
DCA
-
SNN
1 stop31h 20m
United Airlines
Sun 9/139:30 am
SNN
-
DCA
1 stop18h 22m
United Airlines
Deal found 7/14$713
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Sat 10/35:55 pm
DCA
-
SNN
1 stop11h 20m
United Airlines
Tue 10/1312:30 pm
SNN
-
DCA
1 stop14h 29m
United Airlines
Deal found 7/14$727
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/16:00 am
DCA
-
SNN
1 stop23h 15m
United Airlines
Wed 10/712:30 pm
SNN
-
DCA
1 stop27h 14m
United Airlines
Deal found 7/14$738
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2912:33 pm
DCA
-
SNN
2 stops17h 37m
Delta
Thu 9/101:05 pm
SNN
-
DCA
1 stop14h 54m
Delta
Deal found 7/13$742
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:25 pm
DCA
-
SNN
1 stop8h 50m
United Airlines
Wed 8/59:30 am
SNN
-
DCA
1 stop11h 22m
United Airlines
Deal found 7/11$768
This Delta deal was found by Cheapflights users on 7/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:23 pm
DCA
-
SNN
2 stops17h 47m
Delta
Wed 8/191:05 pm
SNN
-
DCA
1 stop14h 54m
Delta
Deal found 7/13$771
This United Airlines deal was found by Cheapflights users on 7/15. 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 9/205:55 pm
DCA
-
SNN
1 stop11h 20m
United Airlines
Sun 10/412:30 pm
SNN
-
DCA
1 stop14h 29m
United Airlines
Deal found 7/15$776
This KAYAK deal was found by Cheapflights users on 7/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/305:55 pm
DCA
-
SNN
1 stop11h 20m
Lufthansa
Sun 9/69:30 am
SNN
-
DCA
1 stop11h 17m
Lufthansa
Deal found 7/12$787

Find 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 July 16, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$699
(United Airlines)

One-way from

$450
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$958
Provider with most accurate pricing for Washington, D.C. Reagan-National-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Shannon flights.
Search Deals
From Washington, D.C. Reagan-National to Shannon
Search Deals
One-way flight from Washington, D.C. Reagan-National to Shannon
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($223 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($53 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 16, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 9/1

1:30 pm-11:10 am

1 stop16h 40m

Shannon

Sun 9/13

1:05 pm-10:47 pm

1 stop14h 42m

$708

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 8/26

5:55 pm-10:15 am

1 stop11h 20m

Shannon

Thu 9/10

9:30 am-5:08 pm

1 stop12h 38m

$708

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sat 9/5

5:45 pm-11:10 am

1 stop12h 25m

Shannon

Sun 9/13

1:05 pm-8:38 pm

1 stop12h 33m

$708

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 8/23

2:00 pm-7:30 am

1 stop12h 30m

Shannon

Mon 8/31

9:30 am-5:09 pm

1 stop12h 39m

$708

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 9/1

2:45 pm-11:10 am

2 stops15h 25m

Shannon

Tue 9/15

1:05 pm-10:59 pm

1 stop14h 54m

$712

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 8/23

12:27 pm-11:10 am

2 stops17h 43m

Shannon

Mon 8/31

1:05 pm-11:03 pm

1 stop14h 58m

$712

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 9/22

5:55 pm-10:15 am

1 stop11h 20m

Shannon

Fri 10/2

12:30 pm-7:39 pm

1 stop12h 09m

$738

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Fri 10/16

1:00 pm-10:15 am

1 stop16h 15m

Shannon

Sat 10/24

12:30 pm-9:59 pm

1 stop14h 29m

$738

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Fri 7/31

3:30 pm-7:30 am

1 stop11h 00m

Shannon

Tue 8/4

9:30 am-3:52 pm

1 stop11h 22m

$738

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 9/30

11:45 am-10:15 am

1 stop17h 30m

Shannon

Wed 10/14

12:30 pm-10:44 am

1 stop27h 14m

$738

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/12

Showing 1-10 of 22 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Shannon, Clare flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Washington, D.C. Reagan-National Airport-Shannon, Clare flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Shannon, Clare flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Shannon, Clare flights, Cheapflights users trust Expedia the most. Expedia 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 Washington, D.C. Reagan-National Airport-Shannon, Clare 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 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.

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 0 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?

    Delta and United Airlines can get you from Washington, D.C. Reagan-National Airport to Shannon, Clare in just under 11h 20m. Your travel time can differ by up to 5h 20m. 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.

  • 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.

See more FAQs

Traveling to a place near Shannon?

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