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

Return flights

07 May - 12 May	Iberia	direct
21 May - 26 May	Iberia	direct
19 May - 28 May	KLM
16 May - 19 May	KLM
08 May - 10 May	Lufthansa
20 May - 27 May	Air Serbia
23 May - 26 May	ITA Airways
16 May - 19 May	Iberia	direct
04 May - 10 May	Iberia
21 May - 24 May	Iberia
30 May - 01 Jun	Iberia Express

Also check the deals for one-way flights from Madrid 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 Madrid to Zagreb in May from $138

Return flights