DCA - SNN

$490 Find Cheap Flights from Reagan Washington National Airport to Shannon

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Shannon departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Shannon

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Shannon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Shannon, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$490
British Airways
Mon 3/2Mon 3/9
DCA - SNN • 2 stops
Cheapest one-way
$670
Multiple Airlines
Thu 6/4
DCA - SNN • 1 stop
Top airlines
United Airlines
Cheapest • from $507 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Shannon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Reagan-National to Shannon (DCA-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Shannon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Reagan-National to Shannon

Mon, Mar 2 - Mon, Mar 9
British Airways Logo
3:21 pm - 11:30 am
DCA
-
SNN
15h 09m
2 stops
British Airways Logo
8:05 pm - 6:33 pm
SNN
-
DCA
26h 28m
2 stops
$490British Airways
Tue, Mar 3 - Tue, Mar 10
British Airways Logo
4:34 pm - 11:30 am
DCA
-
SNN
13h 56m
2 stops
British Airways Logo
7:50 am - 7:44 pm
SNN
-
DCA
15h 54m
2 stops
$495British Airways
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
5:59 pm - 11:20 am
DCA
-
SNN
12h 21m
2 stops
American Airlines Logo
1:45 pm - 10:15 pm
SNN
-
DCA
13h 30m
1 stop
$498American Airlines
Tue, Mar 3 - Tue, Mar 10
American Airlines Logo
2:16 pm - 6:20 am
DCA
-
SNN
11h 04m
2 stops
American Airlines Logo
2:00 pm - 9:01 pm
SNN
-
DCA
11h 01m
1 stop
$499American Airlines
Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
6:00 pm - 10:15 am
DCA
-
SNN
11h 15m
1 stop
United Airlines Logo
12:30 pm - 7:31 pm
SNN
-
DCA
12h 01m
1 stop
$507United Airlines
Mon, Mar 2 - Mon, Mar 9
British Airways Logo
1:44 pm - 11:30 am
DCA
-
SNN
16h 46m
2 stops
British Airways Logo
8:05 pm - 4:37 pm
SNN
-
DCA
24h 32m
2 stops
$517British Airways
Fri, Mar 6 - Thu, Mar 12
British Airways Logo
6:23 am - 11:30 am
DCA
-
SNN
24h 07m
2 stops
British Airways Logo
7:50 am - 6:33 pm
SNN
-
DCA
14h 43m
2 stops
$540British Airways
Mon, Mar 2 - Mon, Mar 9
American Airlines Logo
4:34 pm - 11:30 am
DCA
-
SNN
13h 56m
2 stops
American Airlines Logo
2:00 pm - 9:01 pm
SNN
-
DCA
11h 01m
1 stop
$546American Airlines
Sun, Mar 1 - Sun, Mar 8
American Airlines Logo
5:00 pm - 11:30 am
DCA
-
SNN
13h 30m
2 stops
American Airlines Logo
2:45 pm - 7:45 am
SNN
-
DCA
21h 00m
1 stop
$547American Airlines
Sun, Mar 1 - Sun, Mar 8
American Airlines Logo
3:40 pm - 6:20 am
DCA
-
SNN
9h 40m
1 stop
American Airlines Logo
2:00 pm - 9:01 pm
SNN
-
DCA
11h 01m
1 stop
$548American Airlines
Booking Insights

KAYAK's insights & trends for Reagan-National to Shannon flights

Get data-powered insights and trends into flights from Reagan-National to Shannon to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Reagan Washington National Airport to Shannon?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Reagan Washington National Airport to Shannon were found on United Airlines ($507) and American Airlines ($548).

Good to know

Cheapest flight$490
Flight from Reagan Washington National Airport to Shannon

When to book flights from Reagan-National to Shannon

Are your dates flexible? Find out the best times to travel from Reagan-National to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to Shannon flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to Shannon?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Shannon was $670 for a one-way ticket and $490 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and Shannon?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Reagan Washington National Airport and on arrival in Shannon.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Shannon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Reagan Washington National Airport to Shannon?

    Star Alliance, and oneworld are the airline alliances operating flights between Reagan Washington National Airport and Shannon, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Shannon, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Shannon are United Airlines and American Airlines. With an average price for the route of $892 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $996 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Shannon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from Reagan Washington National Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to Shannon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Shannon with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and SNN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Shannon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Shannon from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Reagan-National to Shannon

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Shannon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Shannon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9171 reviews
7.1Entertainment
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
Airline reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

10.0 ExcellentDavid, Jan 2026
IAD - BNA
Read more United Airlines reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

The professionals have excellent customer service, the seats don´t have enough space.

The economy seats are very cramped and the food was bizarre. However, I did like the greek yogurt option for breakfast.

delayed due to weather. Could not communicate with family since the wifi was broken

I got sick nothing contagious but distressing and the care I received by Kayla? Keighly the flight attendant will be memorable for ever. Thank You

We were told the flight was delayed 5 times, then it was moved to the next day.

Flight delay was communicated before leaving for airport which caused it to be a non-event. Great flight and crew!

Everything you need to know for your flight from Reagan-National to Shannon

Information on your arrival and departure airports