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

Return flights

16 Sep - 30 Sep	easyJet
02 Sep - 17 Sep	easyJet
09 Sep - 16 Sep	easyJet
16 Sep - 23 Sep	easyJet
29 Sep - 07 Oct	easyJet
02 Sep - 16 Sep	easyJet
16 Sep - 21 Sep	easyJet
30 Sep - 07 Oct	easyJet
23 Sep - 30 Sep	easyJet
28 Sep - 09 Oct	easyJet
16 Sep - 01 Oct	easyJet
30 Sep - 10 Oct	easyJet
16 Sep - 22 Sep	easyJet
09 Sep - 15 Sep	easyJet
28 Sep - 01 Oct	easyJet
30 Sep - 02 Oct	easyJet
18 Sep - 23 Sep	easyJet
29 Sep - 01 Oct	easyJet
27 Sep - 03 Oct	Ryanair
25 Sep - 07 Oct	easyJet

Also check the deals for one-way flights from Hamburg 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 Hamburg to Porto in September from 117€

Return flights