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

Return flights

24 Sep - 29 Sep	easyJet
24 Sep - 01 Oct	easyJet
17 Sep - 22 Sep	Aer Lingus
27 Sep - 29 Sep	Aer Lingus
26 Sep - 30 Sep	Aer Lingus
16 Sep - 22 Sep	Aer Lingus
19 Sep - 22 Sep	Aer Lingus
22 Sep - 29 Sep	easyJet
16 Sep - 17 Sep	Vueling Airlines
16 Sep - 17 Sep	Aer Lingus	direct
13 Sep - 17 Sep	Aer Lingus	direct
29 Sep - 01 Oct	easyJet
29 Sep - 06 Oct	easyJet
27 Sep - 05 Oct	Aer Lingus	direct
29 Sep - 05 Oct	easyJet
24 Sep - 14 Oct	Vueling Airlines
24 Sep - 08 Oct	Vueling Airlines
29 Sep - 03 Oct	easyJet
24 Sep - 13 Oct	Vueling Airlines
24 Sep - 07 Oct	Vueling Airlines

Also check the deals for one-way flights from Lyon 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 Lyon to Dublin in September from 103€

Return flights