Cheapest return flights from Chicago to Dublin in September from $434

Best time to book flights for Chicago (ORD) to Dublin (DUB) flights at AirHint

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

Return flights

01 Sep - 08 Sep Scandinavian Airlines
16 Sep - 24 Sep Scandinavian Airlines
07 Sep - 14 Sep Scandinavian Airlines
01 Sep - 14 Sep Scandinavian Airlines
28 Sep - 05 Oct Scandinavian Airlines
14 Sep - 22 Sep Scandinavian Airlines
09 Sep - 15 Sep Scandinavian Airlines
18 Sep - 22 Sep Scandinavian Airlines
18 Sep - 29 Sep Scandinavian Airlines
04 Sep - 08 Sep Scandinavian Airlines
05 Sep - 20 Sep Scandinavian Airlines
30 Sep - 07 Oct Aer Lingus direct
28 Sep - 05 Oct Finnair 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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