Cheapest return flights from Chicago to Dublin in September from 543€

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

05 Sep - 16 Sep Air Canada
01 Sep - 14 Sep SWISS
16 Sep - 27 Sep Turkish Airlines
01 Sep - 14 Sep United direct
14 Sep - 21 Sep United
16 Sep - 27 Sep Aer Lingus direct
07 Sep - 14 Sep Aer Lingus direct
05 Sep - 16 Sep Aer Lingus direct
14 Sep - 21 Sep United 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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