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

Return flights

08 Sep - 01 Oct	Air China
08 Sep - 16 Sep	Shenzhen Airlines
07 Sep - 23 Sep	Air China
17 Sep - 16 Oct	Shenzhen Airlines
17 Sep - 01 Oct	Air China
02 Sep - 23 Sep	Air China
01 Sep - 15 Sep	Air China
11 Sep - 24 Sep	Air China
10 Sep - 24 Sep	Air China
06 Sep - 16 Sep	Air China
05 Sep - 20 Sep	Air China
07 Sep - 16 Sep	Air China
18 Sep - 25 Sep	Air China
22 Sep - 01 Oct	Air China

Also check the deals for one-way flights from Barcelona to Taipei 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 Barcelona to Taipei in September from $585

Return flights