Cheapest return flights from Chicago to Dublin in September from $539

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

24 Sep - 01 Oct Turkish Airlines
14 Sep - 25 Sep TAP
16 Sep - 26 Sep Turkish Airlines
23 Sep - 29 Sep Turkish Airlines
18 Sep - 24 Sep Turkish Airlines
18 Sep - 29 Sep Turkish Airlines
25 Sep - 11 Oct TAP
19 Sep - 30 Sep Turkish Airlines
26 Sep - 04 Oct Turkish Airlines
02 Sep - 16 Sep jetBlue
17 Sep - 25 Sep jetBlue
11 Sep - 16 Sep jetBlue
01 Sep - 14 Sep Scandinavian Airlines
24 Sep - 01 Oct Aer Lingus direct
21 Sep - 07 Oct TAP
26 Sep - 04 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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