Cheapest return flights from Dublin to Keflavik in September from $235

AirHint found the following cheapest return flights from Dublin (DUB) to Keflavik (KEF) in September 2026 (see full year).

Return flights

08 Sep - 16 Sep Ryanair
26 Sep - 04 Oct Ryanair
28 Sep - 06 Oct Ryanair
01 Sep - 08 Sep Scandinavian Airlines
08 Sep - 17 Sep Ryanair
08 Sep - 12 Sep Scandinavian Airlines
09 Sep - 13 Sep Icelandair direct
18 Sep - 25 Sep Icelandair direct
01 Sep - 08 Sep Icelandair direct
10 Sep - 14 Sep Icelandair direct
11 Sep - 18 Sep Icelandair direct
08 Sep - 12 Sep Icelandair direct
28 Sep - 06 Oct Icelandair direct
26 Sep - 04 Oct Icelandair direct
30 Sep - 17 Oct Vueling Airlines

Also check the deals for one-way flights from Dublin to Keflavik in September.

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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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