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

Return flights

25 Apr - 05 May	Ryanair
11 Apr - 18 Apr	Ryanair
18 Apr - 25 Apr	Ryanair
03 Apr - 11 Apr	Austrian Airlines
25 Apr - 02 May	Ryanair
24 Apr - 28 Apr	Ryanair
12 Apr - 18 Apr	Austrian Airlines
30 Apr - 16 May	Ryanair
03 Apr - 12 Apr	Austrian Airlines
15 Apr - 29 Apr	Ryanair
06 Apr - 13 Apr	Ryanair
03 Apr - 06 Apr	Austrian Airlines
04 Apr - 07 Apr	Ryanair
28 Apr - 04 May	Austrian Airlines
26 Apr - 02 May	Lufthansa
26 Apr - 01 May	Lufthansa
15 Apr - 21 May	Ryanair
27 Apr - 04 May	Ryanair
25 Apr - 04 May	Ryanair
30 Apr - 03 May	Lufthansa

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

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 Zagreb to Keflavik in April from $201

Return flights