Cheapest return flights from Chicago to Dublin in September from $446

AirHint found the following cheapest return flights from Chicago (ORD) to Dublin (DUB) in September 2026 (see full year).

Return flights

07 Sep - 14 Sep Scandinavian Airlines
06 Sep - 11 Sep Aer Lingus direct
01 Sep - 08 Sep Aer Lingus direct
16 Sep - 23 Sep Scandinavian Airlines
02 Sep - 14 Sep Scandinavian Airlines
03 Sep - 10 Sep Finnair
05 Sep - 13 Sep Scandinavian Airlines
15 Sep - 21 Sep Scandinavian Airlines
04 Sep - 10 Sep Aer Lingus direct
16 Sep - 24 Sep Scandinavian Airlines
30 Sep - 07 Oct Finnair
22 Sep - 03 Oct Icelandair
28 Sep - 05 Oct Turkish Airlines
22 Sep - 03 Oct Aer Lingus direct
28 Sep - 05 Oct Aer Lingus direct
30 Sep - 07 Oct Aer Lingus direct

Also check the deals for one-way flights from Chicago to Dublin in September.

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