AirHint found the following cheapest return flights from Dublin (DUB) to Kos (KGS) in June 2025 (see full year).

Return flights

24 Jun - 01 Jul	Ryanair
25 Jun - 02 Jul	Ryanair
27 Jun - 04 Jul	Ryanair
26 Jun - 30 Jun	Ryanair
24 Jun - 28 Jun	Ryanair
28 Jun - 05 Jul	Ryanair
22 Jun - 28 Jun	Aer Lingus
21 Jun - 24 Jun	Ryanair
21 Jun - 26 Jun	Ryanair
21 Jun - 08 Jul	Ryanair	direct
21 Jun - 28 Jun	Ryanair
21 Jun - 05 Jul	Ryanair	direct
28 Jun - 08 Jul	Ryanair	direct
21 Jun - 24 Jun	Ryanair	direct
28 Jun - 01 Jul	Ryanair	direct
28 Jun - 05 Jul	Ryanair	direct
24 Jun - 08 Jul	Ryanair	direct
21 Jun - 28 Jun	Ryanair	direct
24 Jun - 28 Jun	Ryanair	direct

Also check the deals for one-way flights from Dublin to Kos in June.

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 Kos in June from $157

Return flights