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

Return flights

04 Sep - 16 Sep	Ryanair
06 Sep - 16 Sep	Ryanair
01 Sep - 09 Sep	Ryanair
01 Sep - 16 Sep	Ryanair
02 Sep - 16 Sep	Ryanair
15 Sep - 22 Sep	Lufthansa
01 Sep - 15 Sep	Ryanair
20 Sep - 11 Oct	Ryanair
08 Sep - 15 Sep	Ryanair
07 Sep - 13 Sep	Ryanair
15 Sep - 27 Sep	Ryanair
20 Sep - 04 Oct	Ryanair
24 Sep - 11 Oct	Ryanair
19 Sep - 03 Oct	Ryanair
14 Sep - 02 Oct	Ryanair
25 Sep - 11 Oct	Ryanair
29 Sep - 05 Oct	Ryanair

Also check the deals for one-way flights from Dublin to Osaka 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 Dublin to Osaka in September from $804

Return flights