IAD - SNN

$297 Find Cheap Flights from Washington Dulles Airport to Shannon - Compare and Save

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 10/3. 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

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Everything you should know

Cheapest round-trip
$735
United Airlines
Mon 9/21Tue 10/6
IAD - SNN • 1 stop
Cheapest one-way
$297
Multiple Airlines
Sat 10/3
IAD - SNN • 3 stops
Top airlines
Cheapest • from $735 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Shannon. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,009 (round-trip)
Shortest trip • 8h 55m (one-way)
Insights
Insights
Insights
Insights
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Booking Insights
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

Mon, Sep 21 - Tue, Oct 6
United Airlines Logo
1:10 pm - 7:30 am
IAD
-
SNN
13h 20m
1 stop
United Airlines Logo
12:30 pm - 10:59 pm
SNN
-
IAD
15h 29m
1 stop
$735United Airlines
Mon, Oct 12 - Thu, Oct 22
United Airlines Logo
8:33 am - 10:15 am
IAD
-
SNN
20h 42m
1 stop
United Airlines Logo
12:30 pm - 10:59 pm
SNN
-
IAD
15h 29m
1 stop
$743United Airlines
Sun, Oct 11 - Fri, Oct 23
United Airlines Logo
5:50 pm - 10:15 am
IAD
-
SNN
11h 25m
1 stop
United Airlines Logo
12:30 pm - 10:59 pm
SNN
-
IAD
15h 29m
1 stop
$743United Airlines
Wed, Sep 23 - Tue, Sep 29
Multiple Airlines Logo
5:00 pm - 11:45 am
IAD
-
SNN
13h 45m
1 stop
Multiple Airlines Logo
6:10 pm - 10:27 am
SNN
-
IAD
45h 17m
2 stops
$761Multiple Airlines
Sat, Sep 12 - Mon, Sep 21
Multiple Airlines Logo
8:30 pm - 10:25 pm
IAD
-
SNN
20h 55m
2 stops
Multiple Airlines Logo
12:40 pm - 7:20 pm
SNN
-
IAD
35h 40m
2 stops
$797Multiple Airlines
Tue, Oct 13 - Wed, Oct 21
Multiple Airlines Logo
8:25 pm - 1:40 pm
IAD
-
SNN
12h 15m
1 stop
Multiple Airlines Logo
6:05 am - 10:15 pm
SNN
-
IAD
21h 10m
2 stops
$799Multiple Airlines
Wed, Sep 23 - Tue, Sep 29
American Airlines Logo
5:45 pm - 11:20 am
IAD
-
SNN
12h 35m
1 stop
American Airlines Logo
7:30 am - 8:20 pm
SNN
-
IAD
17h 50m
1 stop
$940American Airlines
Thu, Aug 27 - Sun, Sep 6
Delta Logo
7:19 pm - 11:10 am
IAD
-
SNN
10h 51m
1 stop
Delta Logo
1:05 pm - 11:49 am
SNN
-
IAD
27h 44m
1 stop
$999Delta
Thu, Aug 27 - Sun, Sep 6
Delta Logo
7:19 pm - 11:10 am
IAD
-
SNN
10h 51m
1 stop
Delta Logo
1:05 pm - 11:49 am
SNN
-
IAD
27h 44m
1 stop
$1,004Delta
Sun, Sep 20 - Mon, Sep 28
American Airlines Logo
7:15 pm - 11:20 am
IAD
-
SNN
11h 05m
1 stop
American Airlines Logo
7:30 am - 3:55 pm
SNN
-
IAD
13h 25m
1 stop
$1,153American Airlines
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 5 days.

In the past 5 days, the cheapest round-trip tickets from Washington Dulles Airport to Shannon were found on United Airlines ($735) and KLM ($834).

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 is just one airline that flies from Washington, D.C. Dulles Intl Airport to Shannon direct and that is Delta. The best round-trip deal found from Delta for the route is $157.

Good to know

Cheapest flight

$297
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 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Shannon was $297 for a one-way ticket and $735 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 United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Shannon are Delta and United Airlines. With an average price for the route of $1,603 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,082 and an overall rating of 7.4.

  • 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 3 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.
7.8
DeltaOverall score based on 8497 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.8Comfort
7.2Food
Airline reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

8.0 ExcellentMichael, Jul 2026
SEA - SMF
Read more Delta reviews

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

Flight was delayed for about an hour but overall good experience

The gentleman at the gate I think his name is RIE was exceptional

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

I wouldn't say I liked being forced to check my small roller bag at the gate; too many people had bags and were in a higher boarding group.

715PM departure was 2.5 hours late. Received hotel & food voucher but after we already booked a room. Entire team just seemed like they were 2-3 steps behind in execution, and notifcations.

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The Economy Plus rows weren’t as roomy as expected, and the meal service left a lot to be desired for.

Disorganized boarding. Mandatory to gate check bags. Curt flight staff. No space for cabin bag, even when I was in first class.

Patrons with larger bags were asked to check the bags when boarding. Seems like the most effective, and least costly way, way to successfully use the cramped space.

They cancelled our flight two times after rebooking us for a later flight. We never got on the plane. We found another solution by driving.

Mostly great. Only issue was with the WiFi. Halfway through the flight it was spotty and I was unable to work as I planned. This impacted my work products as I am traveling for business and it was an unexpected hindrance which was inconvenient. Flight here was amazing. For a 5 hour flight something more than a Biscoff would be nice but I’m just swinging at windmills I guess…

Delayed boarding because a flight attendant couldn't find the gate...sat on the plane for over an hour at the gate because AA couldn't get one of the planes behind us to move

The seats were extremely cramped, with very little legroom or personal space. There was no room left in the overhead bins for a backpack, and the space under the seat in front was so limited that I could barely fit my bag underneath. Overall, the seating arrangement felt very uncomfortable and overcrowded.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

Human interaction. Thought there would be more service-even a smile would have been nice.

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

Information on your arrival and departure airports