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

Return flights

25 Dec - 29 Dec	Cathay Pacific
16 Dec - 30 Dec	Cathay Pacific
17 Dec - 30 Dec	Cathay Pacific
23 Dec - 31 Dec	Cathay Pacific
25 Dec - 07 Jan	Cathay Pacific
17 Dec - 18 Jan	Cathay Pacific
18 Dec - 13 Jan	Cathay Pacific
23 Dec - 06 Jan	Cathay Pacific
23 Dec - 30 Dec	Cathay Pacific
20 Dec - 31 Dec	Cathay Pacific
04 Dec - 10 Dec	Cathay Pacific
05 Dec - 08 Dec	Cathay Pacific
19 Dec - 31 Dec	Delta
18 Dec - 30 Dec	Delta
20 Dec - 02 Jan	Delta
21 Dec - 01 Jan	Delta
19 Dec - 05 Jan	Delta
19 Dec - 02 Jan	Delta
20 Dec - 04 Jan	Delta
18 Dec - 02 Jan	Delta

Also check the deals for one-way flights from Taipei to San Francisco in December.

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 San Francisco in December from 486€

Return flights