Cheapest return flights from Chicago to Dublin in September from 452€

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

Return flights

30 Sep - 07 Oct United
29 Sep - 14 Oct Aer Lingus direct
29 Sep - 17 Oct United
30 Sep - 06 Oct SWISS
22 Sep - 06 Oct Lufthansa
30 Sep - 06 Oct Aer Lingus direct
22 Sep - 06 Oct Aer Lingus direct
26 Sep - 07 Oct Frontier Airlines
27 Sep - 04 Oct United direct
27 Sep - 18 Oct United
22 Sep - 26 Sep Frontier Airlines
25 Sep - 29 Sep Frontier Airlines
18 Sep - 25 Sep Spirit Airlines
26 Sep - 29 Sep Frontier Airlines
24 Sep - 30 Sep Frontier Airlines
19 Sep - 27 Sep jetBlue
16 Sep - 23 Sep Frontier Airlines
14 Sep - 17 Sep Frontier Airlines
17 Sep - 22 Sep Spirit Airlines
25 Sep - 28 Sep Frontier Airlines

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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