$374 Cheap Flights from Washington (DCA) to Shannon (SNN)

View $374 flight on Mon, Nov 17, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)

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Cheap Flights from Washington to Shannon (DCA-SNN)

Prices were available within the past 7 days and start at $374 for one-way flights and $586 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Apr 5 - Tue, Apr 14
DCA
Washington
SNN
Shannon
$586 Roundtrip, found 2 days ago
$586
Roundtrip
found 2 days ago
Select United flight, departing Sun, Apr 5 from Washington to Shannon, returning Tue, Apr 14, priced at $586 found 2 days ago
Air Canada
Wed, Aug 12 - Tue, Aug 25
DCA
Washington
SNN
Shannon
$608 Roundtrip, found 2 days ago
$608
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Aug 12 from Washington to Shannon, returning Tue, Aug 25, priced at $608 found 2 days ago
United
Wed, Apr 29 - Tue, May 5
DCA
Washington
SNN
Shannon
$617 Roundtrip, found 5 days ago
$617
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 29 from Washington to Shannon, returning Tue, May 5, priced at $617 found 5 days ago
United
Wed, Aug 12 - Tue, Aug 25
DCA
Washington
SNN
Shannon
$624 Roundtrip, found 2 days ago
$624
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 12 from Washington to Shannon, returning Tue, Aug 25, priced at $624 found 2 days ago
United
Wed, Aug 12 - Tue, Aug 25
DCA
Washington
SNN
Shannon
$634 Roundtrip, found 2 days ago
$634
Roundtrip
found 2 days ago
Select United flight, departing Wed, Aug 12 from Washington to Shannon, returning Tue, Aug 25, priced at $634 found 2 days ago
United
Fri, May 1 - Thu, May 7
DCA
Washington
SNN
Shannon
$636 Roundtrip, found 1 day ago
$636
Roundtrip
found 1 day ago
Select United flight, departing Fri, May 1 from Washington to Shannon, returning Thu, May 7, priced at $636 found 1 day ago
United
Sun, Apr 12 - Sun, Apr 19
DCA
Washington
SNN
Shannon
$642 Roundtrip, found 4 days ago
$642
Roundtrip
found 4 days ago
Select United flight, departing Sun, Apr 12 from Washington to Shannon, returning Sun, Apr 19, priced at $642 found 4 days ago
American Airlines
Tue, Jan 13 - Tue, Jan 20
DCA
Washington
SNN
Shannon
$697 Roundtrip, found 3 days ago
$697
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jan 13 from Washington to Shannon, returning Tue, Jan 20, priced at $697 found 3 days ago
British Airways
Sun, Nov 23 - Tue, Dec 9
DCA
Washington
SNN
Shannon
$706 Roundtrip, found 2 days ago
$706
Roundtrip
found 2 days ago
Select British Airways flight, departing Sun, Nov 23 from Washington to Shannon, returning Tue, Dec 9, priced at $706 found 2 days ago
Delta
Tue, Sep 15 - Wed, Sep 23
DCA
Washington
SNN
Shannon
$746 Roundtrip, found 3 days ago
$746
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Sep 15 from Washington to Shannon, returning Wed, Sep 23, priced at $746 found 3 days ago

Alternative airports near Shannon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Shannon Airport SNN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $739
SNN
Shannon Airport
CheapestClosest
Average driving time to city center7 min
Flights from $739

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN) cost?
Snag a cheap one-way flight from $374 or cheap return flight from $586 from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)?
The cheapest month to fly from DCA to SNN is April, when demand is low. Off-peak months are typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)?
To find the cheapest airline that'll fly you from DCA to SNN, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)?
Nonstop flights from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DCA to SNN?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)?
To avoid possible delays on the Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN) route, aim to travel before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN) last-minute?
Last-minute bookings from DCA to SNN are usually more expensive. For the best prices, start searching for flights well in advance. That said, if your travel plans are flexible, it's possible to score a cheap fare right before your journey.
Is it cheaper to book a DCA to SNN flight and hotel package?
Compared with arranging hotels and flights separately, booking a DCA to SNN flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of planning your trip. Just pick your flights and choose from our extensive range of stays, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Shannon Airport (SNN)?
Usually, it's possible to reschedule or cancel your DCA to SNN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Ronald Reagan Washington National
Destination airport
Shannon
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, JetBlue Airways, KLM, United
Roundtrip price
$586
Distance
3285 mi

Book with confidence

Washington to Shannon Flights

The cheapest times to fly from Washington to Shannon

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Shannon are during the month of April. You can find some of the cheapest flights from Washington to Shannon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Shannon

Sunday is one of the best days to book for cheap flights from Washington to Shannon: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Shannon

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Shannon in 2025. You can also book with separate airlines for your outbound and return journeys, from $374 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Shannon flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Shannon airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Shannon Flights

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*Available to One Key members.