AirHint found the following cheapest return flights from Reykjavik (REK) to Dublin (DUB) in August 2025 (see full year).

Return flights

13 Aug - 17 Aug	Fly Play	direct
21 Aug - 26 Aug	Fly Play	direct
30 Aug - 31 Aug	Fly Play	direct
24 Aug - 31 Aug	Fly Play	direct
21 Aug - 21 Aug	Fly Play	direct
16 Aug - 19 Aug	Fly Play	direct
21 Aug - 24 Aug	Fly Play	direct
05 Aug - 12 Aug	Fly Play	direct
21 Aug - 22 Aug	Fly Play
25 Aug - 01 Sep	Fly Play
07 Aug - 11 Aug	Fly Play
24 Aug - 14 Sep	Vueling Airlines
31 Aug - 14 Sep	Vueling Airlines
25 Aug - 01 Sep	Icelandair	direct

Also check the deals for one-way flights from Reykjavik to Dublin in August.

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 Reykjavik to Dublin in August from $159

Return flights