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

Return flights

31 Aug - 04 Sep	Fly Play	direct
02 Aug - 03 Aug	Fly Play	direct
26 Aug - 30 Aug	Fly Play	direct
13 Aug - 17 Aug	Fly Play	direct
10 Aug - 19 Aug	Fly Play	direct
23 Aug - 24 Aug	Fly Play	direct
03 Aug - 10 Aug	Fly Play	direct
11 Aug - 18 Aug	Fly Play
04 Aug - 05 Aug	Fly Play
04 Aug - 05 Aug	Icelandair	direct
10 Aug - 31 Aug	Vueling Airlines

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 $182

Return flights