Cheap Flights from St. Louis to Shannon

View €348 flight on Tue, 2 Sep 2025Opens in a new window

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Cheap flights from St. Louis to Shannon (STL-SNN)

Prices were available within the past 7 days and start at €348 for one-way flights and €454 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, 2 Sep - Tue, 9 Sep
STL
St. Louis
SNN
Shannon
€454 Return, found 2 days ago
€454
Return
found 2 days ago
Select United flight, departing Tue, 2 Sep from St. Louis to Shannon, returning Tue, 9 Sep, priced at €454 found 2 days ago
United
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€469 Return, found 5 days ago
€469
Return
found 5 days ago
Select United flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €469 found 5 days ago
Delta
Sun, 3 Aug - Tue, 19 Aug
STL
St. Louis
SNN
Shannon
€621 Return, found 5 days ago
€621
Return
found 5 days ago
Select Delta flight, departing Sun, 3 Aug from St. Louis to Shannon, returning Tue, 19 Aug, priced at €621 found 5 days ago
American Airlines
Tue, 2 Sep - Tue, 9 Sep
STL
St. Louis
SNN
Shannon
€623 Return, found 2 days ago
€623
Return
found 2 days ago
Select American Airlines flight, departing Tue, 2 Sep from St. Louis to Shannon, returning Tue, 9 Sep, priced at €623 found 2 days ago
British Airways
Sun, 7 Sep - Sun, 14 Sep
STL
St. Louis
SNN
Shannon
€690 Return, found 4 days ago
€690
Return
found 4 days ago
Select British Airways flight, departing Sun, 7 Sep from St. Louis to Shannon, returning Sun, 14 Sep, priced at €690 found 4 days ago
Air Canada
Sun, 7 Sep - Sun, 14 Sep
STL
St. Louis
SNN
Shannon
€706 Return, found 4 days ago
€706
Return
found 4 days ago
Select Air Canada flight, departing Sun, 7 Sep from St. Louis to Shannon, returning Sun, 14 Sep, priced at €706 found 4 days ago
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