WAS - SNN

$248 Find Cheap Flights from Washington, D.C. to Shannon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Shannon departing on 9/29. 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

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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Flights Deals

Cheap Flights from Washington, D.C. to Shannon (WAS-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Shannon

Sun, Aug 3 - Tue, Aug 19
United Airlines Logo
2:00 pm - 7:30 amDCA-SNN
12h 30m1 stop
United Airlines Logo
9:30 am - 7:03 pmSNN-DCA
14h 33m1 stop
$477United Airlines
Find Deal
Sun, Aug 3 - Tue, Aug 19
United Airlines Logo
8:30 am - 7:30 amIAD-SNN
18h 00m1 stop
United Airlines Logo
12:30 pm - 7:19 amSNN-IAD
23h 49m1 stop
$477United Airlines
Find Deal
Mon, Aug 4 - Tue, Aug 12
American Airlines Logo
9:20 pm - 8:35 pmBWI-SNN
18h 15m1 stop
American Airlines Logo
7:40 am - 7:35 pmSNN-BWI
16h 55m1 stop
$524American Airlines
Find Deal
Wed, Aug 20 - Wed, Aug 27
American Airlines Logo
5:55 pm - 8:35 pmIAD-SNN
21h 40m1 stop
American Airlines Logo
7:40 am - 8:10 pmSNN-IAD
17h 30m1 stop
$524American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
Delta Logo
4:00 pm - 11:10 amDCA-SNN
14h 10m2 stops
Delta Logo
1:05 pm - 11:46 pmSNN-DCA
15h 41m2 stops
$531Delta
Find Deal
Mon, Aug 4 - Tue, Aug 12
 Logo
11:51 am - 11:10 amBWI-SNN
18h 19m2 stops
 Logo
1:05 pm - 11:17 pmSNN-BWI
15h 12m2 stops
Mon, Aug 4 - Tue, Aug 12
 Logo
12:45 pm - 11:10 amIAD-SNN
17h 25m2 stops
 Logo
1:05 pm - 10:55 pmSNN-IAD
14h 50m2 stops
Sun, Aug 3 - Mon, Aug 18
Air France Logo
1:52 pm - 11:10 amBWI-SNN
16h 18m2 stops
Air France Logo
1:05 pm - 11:17 pmSNN-BWI
15h 12m2 stops
$576Air France
Find Deal
Sun, Aug 3 - Tue, Aug 19
Air France Logo
4:45 pm - 11:10 amBWI-SNN
13h 25m2 stops
Air France Logo
1:05 pm - 11:17 pmSNN-BWI
15h 12m2 stops
$578Air France
Find Deal
Thu, Aug 28 - Thu, Sep 4
Delta Logo
8:23 pm - 11:10 amIAD-SNN
9h 47m1 stop
Delta Logo
1:05 pm - 7:43 pmSNN-IAD
11h 38m1 stop
$624Delta
Find Deal
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KAYAK's insights & trends for Washington, D.C. to Shannon flights

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

How much is a round-trip flight from Washington, D.C. to Shannon, Clare?

What is the cheapest month to fly from Washington, D.C. to Shannon?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Shannon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Shannon is May, where tickets cost $726 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,153 and $945 respectively.

Good to know

Low seasonDecember
High seasonSeptember
Cheapest flight$248
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Baltimore to Shannon

When to book flights from Washington, D.C. to Shannon

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Shannon

  • What is the cheapest flight from Washington, D.C. to Shannon?

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Shannon was $248 for a one-way ticket and $477 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Shannon?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Shannon?

    Washington, D.C. is served by 2 major airports and there is only 1 main airport in Shannon. You will leave Washington, D.C. from one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be arriving at Shannon.

  • Which aircraft models fly most regularly from Washington, D.C. to Shannon?

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

  • Which airline alliances offer flights from Washington, D.C. to Shannon?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Shannon, with SkyTeam 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 $915 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 $898 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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 Washington, D.C. to Shannon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Shannon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. 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 8856 reviews
7.7Boarding
8.1Crew
6.6Food
7.0Entertainment
7.3Comfort
Airline reviews

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

10.0 ExcellentEmily, Jul 2025IAH - EZE
Read more United Airlines reviews

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Flight was cramped with every seat taken. The food was fine, nothing crazy to write home about. The plane felt dated and needing some TLC, the button for the window shade didn't work and there were no AC outlets to use. When communicating with staff all except one nice lady never seemed happy to help me almost like I was bothering them when asked for things like a glass of water or a snack. The flight was overall fine. It did what was needed which is get me from point A to point B. But it certainly was not special. I don't expect much in economy but I believe economy on a host of other airlines is more memorable and better experience.

Overall fine, but the delay was annoying and the reasons for the delay were not communicated. The crew on board were phenomenal!

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

They are still charging me after taking 466 and 833 for round trip from AR to to Bradley airport from 19 to 21. Then poor experience. Am hurt and I will say it on social media. Please stay away from this airline. I see in my bank account they are still taking 644. Am trying to stop it. I used to fly United airlines and I suggest that if you don't want extra charges and good service you go back there. American airlines delayed my flight again and I was late for my meeting, no recompensation but charging me over and over.

They changed our Gate 5 times, and concourse twice. Changed our seats twice.

Pitch was very small. Knees were on the seat back in front of me.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

Everything you need to know for your flight from Washington, D.C. to Shannon

Information on your arrival and departure airports

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