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

Return flights

02 Sep - 30 Sep	easyJet
16 Sep - 30 Sep	easyJet
13 Sep - 23 Sep	Transavia France
29 Sep - 01 Oct	easyJet
16 Sep - 23 Sep	easyJet
09 Sep - 23 Sep	Transavia France
29 Sep - 09 Oct	easyJet
29 Sep - 09 Oct	Ryanair	direct
20 Sep - 29 Sep	Ryanair
18 Sep - 23 Sep	Transavia France
24 Sep - 09 Oct	easyJet
20 Sep - 23 Sep	Transavia France
20 Sep - 24 Sep	easyJet
25 Sep - 30 Sep	easyJet
29 Sep - 16 Oct	Ryanair	direct
18 Sep - 01 Oct	Ryanair
27 Sep - 11 Oct	Transavia France
24 Sep - 03 Oct	easyJet
20 Sep - 11 Oct	easyJet
29 Sep - 02 Oct	Ryanair	direct

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 140€

Return flights