Cheapest return flights from Chicago to Dublin in September from $408

AirHint found the following cheapest return flights from Chicago (ORD) to Dublin (DUB) in September 2025 (see full year).

Return flights

04 Sep - 17 Sep TAP
25 Sep - 30 Sep TAP
20 Sep - 30 Sep TAP
01 Sep - 14 Sep Scandinavian Airlines
05 Sep - 14 Sep Scandinavian Airlines
22 Sep - 30 Sep TAP
22 Sep - 27 Sep Scandinavian Airlines
16 Sep - 26 Sep Scandinavian Airlines
25 Sep - 29 Sep Scandinavian Airlines
05 Sep - 13 Sep Scandinavian Airlines
27 Sep - 04 Oct Scandinavian Airlines
29 Sep - 06 Oct Scandinavian Airlines
27 Sep - 07 Oct TAP
26 Sep - 07 Oct TAP
20 Sep - 01 Oct Scandinavian Airlines
26 Sep - 05 Oct TAP
28 Sep - 05 Oct Aer Lingus direct
29 Sep - 06 Oct Aer Lingus direct
20 Sep - 01 Oct Finnair direct
27 Sep - 07 Oct Aer Lingus direct

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

Skyscanner

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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