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

Return flights

11 May - 16 May	Air Serbia
14 May - 17 May	Air Serbia
27 May - 01 Jun	Air Serbia
21 May - 25 May	Air Serbia
07 May - 09 May	Lufthansa	direct
03 May - 09 May	Lufthansa	direct
05 May - 10 May	Ryanair
02 May - 11 May	Lufthansa
02 May - 11 May	Lufthansa	direct
02 May - 03 May	Lufthansa	direct
30 May - 10 Jun	Lufthansa	direct
01 May - 11 May	Croatia Airlines
24 May - 07 Jun	Croatia Airlines	direct

Also check the deals for one-way flights from Frankfurt to Zagreb 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 Frankfurt to Zagreb in May from 154€

Return flights