AirHint found the following cheapest return flights from Madrid (MAD) to Zagreb (ZAG) in September 2025 (see full year).

Return flights

27 Sep - 01 Oct	Ryanair
30 Sep - 06 Oct	Ryanair
24 Sep - 04 Oct	Ryanair
30 Sep - 01 Oct	Ryanair
27 Sep - 02 Oct	Ryanair
29 Sep - 07 Oct	Ryanair
23 Sep - 14 Oct	Ryanair
25 Sep - 04 Oct	Ryanair
30 Sep - 04 Oct	Air Europa
24 Sep - 30 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
24 Sep - 25 Sep	Ryanair
29 Sep - 01 Oct	Ryanair
27 Sep - 29 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
17 Sep - 30 Sep	Air Europa
18 Sep - 30 Sep	Air Europa
17 Sep - 22 Sep	Air Europa
20 Sep - 23 Sep	Air Serbia
18 Sep - 22 Sep	Air Europa

Also check the deals for one-way flights from Madrid to Zagreb in September.

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 September from 137€

Return flights