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

Return flights

17 Sep - 24 Sep	Scoot Tigerair
14 Sep - 01 Oct	Scoot Tigerair
14 Sep - 30 Sep	Scoot Tigerair
16 Sep - 30 Sep	Scoot Tigerair
22 Sep - 29 Sep	Scoot Tigerair
11 Sep - 24 Sep	Scoot Tigerair
17 Sep - 03 Oct	Scoot Tigerair
03 Sep - 20 Sep	Hainan Airlines
02 Sep - 17 Sep	Scoot Tigerair
26 Sep - 06 Oct	China Airlines
01 Sep - 16 Sep	Hainan Airlines
26 Sep - 03 Oct	EVA Air
01 Sep - 15 Sep	Hainan Airlines
27 Sep - 04 Oct	Thai Airways
06 Sep - 27 Sep	China Airlines
14 Sep - 02 Oct	Turkish Airlines
26 Sep - 10 Oct	EVA Air
25 Sep - 10 Oct	EVA Air

Also check the deals for one-way flights from Taipei 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 Taipei to Porto in September from $816

Return flights