AirHint found the following cheapest return flights from St. Louis (STL) to Dublin (DUB) in September 2026 (see full year).
Return flights
| 07 Sep - 15 Sep | Air Canada | ||
| 08 Sep - 15 Sep | United | ||
| 09 Sep - 16 Sep | Air Canada | ||
| 01 Sep - 08 Sep | Air Canada | ||
| 07 Sep - 18 Sep | Air Canada | ||
| 01 Sep - 10 Sep | Delta | ||
| 10 Sep - 14 Sep | United | ||
| 30 Sep - 07 Oct | United |
Also check the deals for one-way flights from St. Louis to Dublin in September.
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