American Airlines Cheap Flights from Washington to Shannon

View €458 flight on Sun, 15 Mar 2026Opens in a new window
  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Prices were available within the past 7 days and start at €458 for one-way flights and €690 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 21 Jan - Wed, 28 Jan
IAD
Washington
SNN
Shannon
€690 Return, found 1 day ago
€690
Return
found 1 day ago
Select American Airlines flight, departing Wed, 21 Jan from Washington to Shannon, returning Wed, 28 Jan, priced at €690 found 1 day ago
American Airlines
Wed, 21 Jan - Wed, 28 Jan
IAD
Washington
SNN
Shannon
€694 Return, found 1 day ago
€694
Return
found 1 day ago
Select American Airlines flight, departing Wed, 21 Jan from Washington to Shannon, returning Wed, 28 Jan, priced at €694 found 1 day ago
American Airlines
Wed, 21 Jan - Wed, 28 Jan
IAD
Washington
SNN
Shannon
€707 Return, found 1 day ago
€707
Return
found 1 day ago
Select American Airlines flight, departing Wed, 21 Jan from Washington to Shannon, returning Wed, 28 Jan, priced at €707 found 1 day ago
American Airlines
Wed, 21 Jan - Wed, 28 Jan
IAD
Washington
SNN
Shannon
€726 Return, found 1 day ago
€726
Return
found 1 day ago
Select American Airlines flight, departing Wed, 21 Jan from Washington to Shannon, returning Wed, 28 Jan, priced at €726 found 1 day ago
American Airlines
Wed, 21 Jan - Wed, 28 Jan
IAD
Washington
SNN
Shannon
€727 Return, found 1 day ago
€727
Return
found 1 day ago
Select American Airlines flight, departing Wed, 21 Jan from Washington to Shannon, returning Wed, 28 Jan, priced at €727 found 1 day ago
American Airlines
Thu, 8 Jan - Thu, 15 Jan
IAD
Washington
SNN
Shannon
€737 Return, found 1 day ago
€737
Return
found 1 day ago
Select American Airlines flight, departing Thu, 8 Jan from Washington to Shannon, returning Thu, 15 Jan, priced at €737 found 1 day ago
American Airlines
Thu, 8 Jan - Thu, 15 Jan
IAD
Washington
SNN
Shannon
€748 Return, found 1 day ago
€748
Return
found 1 day ago
Select American Airlines flight, departing Thu, 8 Jan from Washington to Shannon, returning Thu, 15 Jan, priced at €748 found 1 day ago

Find the cheapest month to fly from Washington (IAD) to Shannon (SNN)

August is typically the cheapest month to fly

From €462 - €1,040 per traveller.
Washington to Shannon route information
Origin airport
Washington Dulles Intl.
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways
Popular airline
Aer Lingus
Distance
5276 km
*Available to Expedia members.