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

Return flights

17 Sep - 15 Oct	Vueling Airlines
23 Sep - 30 Sep	easyJet
30 Sep - 07 Oct	easyJet
29 Sep - 07 Oct	easyJet
27 Sep - 02 Oct	Ryanair
24 Sep - 08 Oct	easyJet
24 Sep - 01 Oct	easyJet
28 Sep - 30 Sep	Ryanair
29 Sep - 15 Oct	easyJet
21 Sep - 07 Oct	Ryanair
02 Sep - 30 Sep	easyJet
28 Sep - 02 Oct	Ryanair
17 Sep - 02 Oct	Ryanair
25 Sep - 30 Sep	Ryanair
16 Sep - 30 Sep	easyJet
26 Sep - 30 Sep	Ryanair
27 Sep - 29 Sep	Ryanair
03 Sep - 08 Sep	TAP
15 Sep - 22 Sep	TAP
23 Sep - 24 Sep	easyJet

Also check the deals for one-way flights from Berlin 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 Berlin to Porto in September from 149€

Return flights