IAD - SNN

$334 Find Cheap Flights from Washington Dulles Airport 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 Dulles Intl to Shannon departing on 11/15. 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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Flight Deals

Cheap Flights from Dulles Intl to Shannon (IAD-SNN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl 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 Dulles Intl to Shannon

Thu, Feb 5 - Mon, Feb 9
American Airlines Logo
9:45 pm - 4:45 pmIAD-SNN
14h 00m1 stop
American Airlines Logo
7:50 am - 7:55 pmSNN-IAD
17h 05m1 stop
$519American Airlines
Find Deal
Sun, Nov 23 - Tue, Dec 9
American Airlines Logo
9:45 pm - 4:45 pmIAD-SNN
14h 00m1 stop
American Airlines Logo
7:50 am - 3:35 pmSNN-IAD
12h 45m1 stop
$591American Airlines
Find Deal
Tue, Apr 7 - Sat, Apr 18
Multiple Airlines Logo
5:20 pm - 10:15 amIAD-SNN
11h 55m1 stop
Multiple Airlines Logo
12:00 pm - 7:55 pmSNN-IAD
12h 55m1 stop
$613Multiple Airlines
Find Deal
Sun, Nov 23 - Tue, Dec 9
Air Canada Logo
9:45 am - 11:30 amIAD-SNN
20h 45m2 stops
Air Canada Logo
7:50 am - 8:59 pmSNN-IAD
18h 09m2 stops
$662Air Canada
Find Deal
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
6:20 pm - 4:45 pmIAD-SNN
17h 25m1 stop
British Airways Logo
8:05 pm - 3:35 pmSNN-IAD
24h 30m2 stops
$686British Airways
Find Deal
Wed, Nov 26 - Wed, Dec 3
Air Canada Logo
9:45 am - 4:45 pmIAD-SNN
26h 00m2 stops
Air Canada Logo
7:50 am - 4:21 pmSNN-IAD
37h 31m2 stops
$689Air Canada
Find Deal
Wed, Nov 26 - Wed, Dec 3
British Airways Logo
9:45 pm - 4:45 pmIAD-SNN
14h 00m1 stop
British Airways Logo
7:50 am - 3:35 pmSNN-IAD
12h 45m1 stop
$691British Airways
Find Deal
Tue, Apr 7 - Sat, Apr 18
Multiple Airlines Logo
5:05 pm - 8:20 pmIAD-SNN
22h 15m3 stops
Multiple Airlines Logo
10:05 am - 3:05 pmSNN-IAD
34h 00m3 stops
$795Multiple Airlines
Find Deal
Tue, Dec 2 - Sat, Dec 6
Aer Lingus Logo
9:00 pm - 4:45 pmIAD-SNN
14h 45m2 stops
Aer Lingus Logo
5:25 pm - 7:30 pmSNN-IAD
31h 05m2 stops
$831Aer Lingus
Find Deal
Thu, Dec 11 - Thu, Dec 18
Aer Lingus Logo
5:05 pm - 7:25 pmIAD-SNN
21h 20m2 stops
Aer Lingus Logo
7:50 am - 7:30 pmSNN-IAD
16h 40m2 stops
$852Aer Lingus
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $519 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$519
American Airlines
Thu 2/5Mon 2/9
IAD - SNN • 1 stop
Cheapest one-way
$334
Multiple Airlines
Sat 11/15
IAD - SNN • 3 stops
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We hope you love your trip to Shannon!
Booking Insights

KAYAK's insights & trends for Dulles Intl to Shannon flights

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

Which airlines provide the cheapest flights from Washington Dulles 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 Washington Dulles Airport to Shannon were found on American Airlines ($519) and Air Canada ($662).

Which airlines fly non-stop between Washington, D.C. Dulles Intl Airport and Shannon?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Shannon.

There are 4 airlines that fly nonstop from Washington, D.C. Dulles Intl Airport to Shannon. They are: British Airways, Delta, KLM and United Airlines. The cheapest price of all airlines flying this route was found with Delta at $157 for a round-trip flight. On average, the best prices for this route can be found at KLM.

Good to know

Cheapest flight$334
Flight from Washington Dulles Airport to Shannon

When to book flights from Dulles Intl to Shannon

Are your dates flexible? Find out the best times to travel from Dulles Intl 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 Washington Dulles Airport to Shannon flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Shannon was $334 for a one-way ticket and $519 for a round-trip.

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

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

  • Which airports will I be using when flying from Washington Dulles Airport to Shannon?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Shannon, also known as Shannon.

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

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

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

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

  • Which is the best airline for flights from Washington, D.C. to Shannon, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Shannon are Delta and KLM. With an average price for the route of $795 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $645 and an overall rating of 7.7.

  • How does KAYAK find such low prices on flights from Washington Dulles 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 Washington Dulles Airport to Shannon.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Shannon from Washington Dulles 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 Washington Dulles 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 Washington Dulles Airport with another airline. Booking your flights between Washington Dulles 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 Washington Dulles 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 Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Dulles Intl 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 Dulles Intl 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.
7.9
DeltaOverall score based on 7993 reviews
7.3Food
8.5Crew
7.9Comfort
8.2Boarding
7.9Entertainment
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

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.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

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 don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

Everything you need to know for your flight from Dulles Intl to Shannon

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