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

Return flights

02 Sep - 07 Sep	Delta
01 Sep - 05 Sep	Delta
10 Sep - 28 Sep	Delta
10 Sep - 17 Sep	Delta
05 Sep - 25 Sep	Delta
17 Sep - 24 Sep	Delta
17 Sep - 26 Sep	Delta
18 Sep - 24 Sep	Delta
22 Sep - 25 Sep	Delta
19 Sep - 05 Oct	Delta
20 Sep - 06 Oct	Delta
01 Sep - 16 Sep	Korean Air
01 Sep - 20 Oct	Delta
01 Sep - 21 Oct	Delta
01 Sep - 30 Oct	Delta
26 Sep - 05 Oct	Delta
24 Sep - 13 Oct	Delta
07 Sep - 02 Oct	Philippine Airlines
30 Sep - 07 Oct	Philippine Airlines
29 Sep - 06 Oct	Philippine Airlines

Also check the deals for one-way flights from San Francisco 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 San Francisco to Taipei in September from 555€

Return flights