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

Return flights

10 Sep - 15 Sep	Spirit Airlines
01 Sep - 03 Sep	Spirit Airlines
19 Sep - 27 Sep	Spirit Airlines
14 Sep - 18 Sep	Spirit Airlines
19 Sep - 04 Oct	Spirit Airlines
15 Sep - 11 Oct	Spirit Airlines
01 Sep - 27 Sep	Spirit Airlines
02 Sep - 07 Oct	Spirit Airlines
15 Sep - 24 Sep	Aer Lingus	direct
17 Sep - 11 Oct	Spirit Airlines
04 Sep - 27 Sep	Allegiant Air
14 Sep - 21 Sep	United
12 Sep - 19 Sep	United
15 Sep - 11 Oct	Aer Lingus	direct
20 Sep - 27 Sep	Aer Lingus
30 Sep - 07 Oct	United
28 Sep - 05 Oct	United
24 Sep - 01 Oct	United

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

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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Cheapest return flights from Indianapolis to Dublin in September from $506

Return flights