Cheapest return flights from St. Louis to Dublin in December from $433

AirHint found the following cheapest return flights from St. Louis (STL) to Dublin (DUB) in December 2025 (see full year).

Return flights

09 Dec - 16 Dec Air France
10 Dec - 14 Jan United
12 Dec - 14 Dec Air France
02 Dec - 09 Dec Aer Lingus
04 Dec - 11 Dec Aer Lingus
06 Dec - 13 Dec Aer Lingus
15 Dec - 10 Jan Air Canada
17 Dec - 10 Jan Frontier Airlines
08 Dec - 03 Jan Frontier Airlines
20 Dec - 29 Dec Delta
19 Dec - 27 Dec Frontier Airlines

Also check the deals for one-way flights from St. Louis to Dublin in December.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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