Cheapest return flights from Dublin to Keflavik in May from $173

Best time to book flights for Dublin (DUB) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Dublin (DUB) to Keflavik (KEF) in May 2025 (see full year).

Return flights

07 May - 09 May Fly Play direct
14 May - 19 May Ryanair
09 May - 14 May Fly Play direct
07 May - 14 May Fly Play direct
01 May - 04 May Fly Play direct
08 May - 12 May Ryanair
11 May - 14 May Ryanair
05 May - 12 May Ryanair
17 May - 21 May Ryanair
06 May - 10 May Ryanair
29 May - 07 Jun Ryanair
31 May - 05 Jun Ryanair
28 May - 16 Jun Ryanair
27 May - 16 Jun Ryanair
29 May - 07 Jun Fly Play direct
29 May - 02 Jun Ryanair
30 May - 02 Jun Ryanair
24 May - 01 Jun Ryanair
24 May - 01 Jun Icelandair direct
30 May - 02 Jun Icelandair direct

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

Skyscanner

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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