AirHint found the following cheapest return flights from Zagreb (ZAG) to Porto (OPO) in March 2026 (see full year).

Return flights

10 Mar - 16 Mar	Ryanair
07 Mar - 11 Mar	Ryanair
14 Mar - 16 Mar	Ryanair
03 Mar - 09 Mar	Ryanair
07 Mar - 14 Mar	Ryanair
05 Mar - 11 Mar	Ryanair
02 Mar - 07 Mar	Ryanair
05 Mar - 09 Mar	Ryanair
12 Mar - 15 Mar	Ryanair
09 Mar - 12 Mar	Ryanair
30 Mar - 04 Apr	Ryanair
29 Mar - 04 Apr	Ryanair
29 Mar - 02 Apr	Ryanair
31 Mar - 04 Apr	Ryanair
30 Mar - 03 Apr	Ryanair
30 Mar - 07 Apr	Ryanair
28 Mar - 02 Apr	Ryanair
31 Mar - 05 Apr	Ryanair
27 Mar - 05 Apr	Lufthansa

Also check the deals for one-way flights from Zagreb to Porto in March.

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 Porto in March from $109

Return flights