Cheapest return ZAG–KEF flights, May

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

Return flights

20 May - 27 May Ryanair
05 May - 06 May Ryanair
13 May - 21 May Ryanair
12 May - 21 May Ryanair
01 May - 09 May Ryanair
05 May - 07 May Ryanair
15 May - 19 May Ryanair
26 May - 02 Jun Ryanair
04 May - 11 May Ryanair
28 May - 04 Jun Ryanair
12 May - 22 May Ryanair
27 May - 03 Jun Ryanair
27 May - 31 May Ryanair
28 May - 01 Jun LOT
29 May - 05 Jun Ryanair

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

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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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