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

Return flights

06 Dec - 14 Dec	Ryanair
31 Dec - 14 Jan	Aer Lingus
11 Dec - 25 Dec	Ryanair
15 Dec - 17 Jan	Ryanair
15 Dec - 07 Jan	Ryanair
29 Dec - 23 Jan	Ryanair
14 Dec - 07 Jan	Ryanair
24 Dec - 11 Jan	Ryanair
23 Dec - 30 Dec	Ryanair
26 Dec - 12 Jan	Ryanair
24 Dec - 06 Jan	Ryanair
27 Dec - 30 Jan	Ryanair
24 Dec - 05 Jan	Ryanair
15 Dec - 19 Dec	Ryanair
19 Dec - 26 Dec	Ryanair
06 Dec - 09 Dec	British Airways
07 Dec - 09 Dec	Air France
20 Dec - 27 Dec	British Airways

Also check the deals for one-way flights from Dublin to Osaka in December.

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 December from 635€

Return flights