AirHint found the following cheapest return flights from Munich (MUC) to Porto (OPO) in September 2025 (see full year).

Return flights

22 Sep - 06 Oct	easyJet
30 Sep - 09 Oct	Lufthansa	direct
17 Sep - 08 Oct	easyJet
01 Sep - 08 Sep	easyJet
08 Sep - 15 Sep	Vueling Airlines
01 Sep - 14 Sep	easyJet
15 Sep - 21 Sep	easyJet
08 Sep - 11 Sep	KLM
30 Sep - 08 Oct	Lufthansa	direct
29 Sep - 04 Oct	easyJet
15 Sep - 24 Sep	Vueling Airlines
24 Sep - 01 Oct	SWISS
08 Sep - 14 Sep	Vueling Airlines
05 Sep - 16 Sep	Vueling Airlines
25 Sep - 02 Oct	SWISS
08 Sep - 21 Sep	Vueling Airlines
10 Sep - 14 Sep	easyJet
30 Sep - 14 Oct	Vueling Airlines
24 Sep - 14 Oct	Vueling Airlines
17 Sep - 06 Oct	Vueling Airlines

Also check the deals for one-way flights from Munich to Porto 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 Munich to Porto in September from 166€

Return flights