Cheapest return flights from Dublin to Keflavik in September from $275

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

Return flights

02 Sep - 16 Sep SWISS
09 Sep - 16 Sep SWISS
24 Sep - 01 Oct Icelandair direct
03 Sep - 06 Sep Icelandair direct
29 Sep - 15 Oct Icelandair direct
02 Sep - 09 Sep Icelandair direct
23 Sep - 30 Sep Icelandair direct
12 Sep - 16 Sep Icelandair direct
02 Sep - 16 Sep Icelandair direct
02 Sep - 07 Sep Icelandair direct
01 Sep - 12 Sep Icelandair direct
01 Sep - 14 Sep Icelandair direct
29 Sep - 09 Oct Icelandair direct
28 Sep - 15 Oct Icelandair direct
28 Sep - 05 Oct Icelandair direct

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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