HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Shannon

$423+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SNN
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Shannon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2026.

This United Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 9/14:30 pm
DCA
-
SNN
1 stop12h 45m
United Airlines
Tue 9/812:30 pm
SNN
-
DCA
1 stop12h 09m
United Airlines
Deal found 6/12$825
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:45 pm
DCA
-
SNN
2 stops15h 25m
Multiple Airlines
Tue 8/251:05 pm
SNN
-
DCA
1 stop14h 54m
Multiple Airlines
Deal found 6/10$829
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/122:45 pm
DCA
-
SNN
2 stops15h 25m
Delta
Fri 8/211:05 pm
SNN
-
DCA
2 stops14h 54m
Delta
Deal found 6/8$830
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/133:30 pm
DCA
-
SNN
1 stop11h 00m
United Airlines
Fri 8/219:30 am
SNN
-
DCA
1 stop11h 12m
United Airlines
Deal found 6/8$875
This Delta deal was found by Cheapflights users on 6/7. 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.
Mon 7/271:30 pm
DCA
-
SNN
1 stop16h 40m
Delta
Thu 8/131:05 pm
SNN
-
DCA
1 stop14h 53m
Delta
Deal found 6/7$882
This United Airlines deal was found by Cheapflights users on 6/7. 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 8/63:30 pm
DCA
-
SNN
1 stop11h 00m
United Airlines
Sat 8/229:30 am
SNN
-
DCA
1 stop12h 32m
United Airlines
Deal found 6/7$925
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:29 pm
DCA
-
SNN
2 stops17h 41m
Delta
Mon 8/241:05 pm
SNN
-
DCA
2 stops14h 54m
Delta
Deal found 6/8$930
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/303:30 pm
DCA
-
SNN
1 stop11h 00m
United Airlines
Mon 9/79:30 am
SNN
-
DCA
1 stop14h 39m
United Airlines
Deal found 6/10$932
This KLM deal was found by Cheapflights users on 6/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:02 am
DCA
-
SNN
1 stop24h 08m
KLM
Mon 8/241:05 pm
SNN
-
DCA
2 stops15h 43m
KLM
Deal found 6/8$936
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/122:00 pm
DCA
-
SNN
1 stop12h 30m
United Airlines
Tue 7/219:30 am
SNN
-
DCA
1 stop12h 42m
United Airlines
Deal found 6/8$939
This Delta deal was found by Cheapflights users on 6/7. 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.
Mon 7/275:40 pm
DCA
-
SNN
1 stop12h 30m
Delta
Mon 8/101:05 pm
SNN
-
DCA
1 stop12h 54m
Delta
Deal found 6/7$942

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 June 12, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$825
(United Airlines)

One-way from

$423
(Mytrip)

Popular in

June

Cheapest in

August

Average price

$1,236
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. 16% potential increase in price ($171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 12, 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

Sun 8/2

11:57 am-7:30 am

1 stop14h 33m

Shannon

Wed 8/19

9:30 am-7:09 pm

1 stop14h 39m

$825

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 8/19

8:20 pm-10:15 am

1 stop8h 55m

Shannon

Tue 8/25

9:30 am-8:09 pm

1 stop15h 39m

$825

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 8/19

2:45 pm-11:10 am

2 stops15h 25m

Shannon

Tue 8/25

1:05 pm-10:59 pm

1 stop14h 54m

$829

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 9/1

11:00 am-11:10 am

1 stop19h 10m

Shannon

Tue 9/8

1:05 pm-11:24 pm

2 stops15h 19m

$829

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

Wed 9/9

1:05 pm-10:51 pm

2 stops14h 46m

$830

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Wed 8/12

5:49 pm-11:10 am

2 stops12h 21m

Shannon

Fri 8/21

1:05 pm-10:59 pm

1 stop14h 54m

$830
Quickest round-trip

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 7/12

3:30 pm-7:30 am

1 stop11h 00m

Shannon

Tue 7/21

9:30 am-5:12 pm

1 stop12h 42m

$939

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 7/12

5:00 pm-11:10 am

1 stop13h 10m

Shannon

Tue 7/21

1:05 pm-10:59 pm

2 stops14h 54m

$943

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Sun 7/12

11:00 am-11:10 am

1 stop19h 10m

Shannon

Tue 7/21

1:05 pm-10:59 pm

2 stops14h 54m

$944
Cheapest one-way

Washington, D.C.Shannon

DCA - SNN

DCASNN

Washington, D.C. Reagan-National

Tue 9/15

11:00 am-11:50 am

2 stops19h 50m

$423

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2
  • 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?

    United Airlines can get you from Washington, D.C. Reagan-National Airport to Shannon, Clare in just under 14h 33m. Your travel time can differ by up to . Washington, D.C. Reagan-National Airport and Shannon, Clare are separated by a distance of 3284 mi.

  • 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?

Book flights to Shannon if you plan to visit one of these locations
Ennis

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Dublin flights
Baltimore to Dublin flights
Dulles Intl to Shannon flights
Dulles Intl to Cork flights
Baltimore to Cork flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.