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

Return flights

02 May - 06 May	Ryanair
06 May - 03 Jun	Ryanair
06 May - 03 Jun	Icelandair	direct
16 May - 30 May	Icelandair	direct
12 May - 21 May	Ryanair
02 May - 12 May	Icelandair	direct
12 May - 21 May	Icelandair	direct
18 May - 23 May	Icelandair	direct
08 May - 17 May	Ryanair
11 May - 18 May	Icelandair	direct
11 May - 21 May	Ryanair
15 May - 24 May	Icelandair	direct

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

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 Keflavik in May from 186€

Return flights