AirHint found the following cheapest return flights from Porto (OPO) to Belgrade (BEG) in October 2025 (see full year).

Return flights

28 Oct - 29 Oct	Ryanair
29 Oct - 30 Oct	Ryanair
27 Oct - 30 Oct	Ryanair
28 Oct - 04 Nov	Ryanair
27 Oct - 10 Nov	Ryanair
30 Oct - 31 Oct	Ryanair
27 Oct - 03 Nov	Ryanair
26 Oct - 30 Oct	Ryanair
31 Oct - 04 Nov	Ryanair
31 Oct - 03 Nov	Vueling Airlines
23 Oct - 03 Nov	Air Serbia
24 Oct - 27 Oct	Ryanair
24 Oct - 31 Oct	Ryanair
26 Oct - 31 Oct	Ryanair
23 Oct - 25 Oct	Air Serbia
27 Oct - 10 Nov	Air Serbia	direct
27 Oct - 03 Nov	Air Serbia	direct
31 Oct - 07 Nov	Vueling Airlines
23 Oct - 03 Nov	Air Serbia	direct
31 Oct - 31 Oct	Air Serbia

Also check the deals for one-way flights from Porto to Belgrade in October.

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 Porto to Belgrade in October from $209

Return flights