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

Return flights

29 Sep - 07 Oct	Transavia France
27 Sep - 10 Oct	Air France
27 Sep - 01 Oct	Air France
28 Sep - 01 Oct	Ryanair
29 Sep - 04 Oct	easyJet
30 Sep - 08 Oct	Iberia Express
28 Sep - 01 Oct	Eurowings	direct
29 Sep - 14 Oct	Transavia France
29 Sep - 01 Oct	easyJet
30 Sep - 04 Oct	easyJet
29 Sep - 30 Sep	Transavia France
25 Sep - 27 Sep	Air France
25 Sep - 30 Sep	Air France
28 Sep - 30 Sep	Ryanair
24 Sep - 26 Sep	easyJet
24 Sep - 30 Sep	Transavia France
27 Sep - 30 Sep	Transavia France
28 Sep - 29 Sep	Eurowings
26 Sep - 29 Sep	easyJet
27 Sep - 29 Sep	Transavia France

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 205€

Return flights