Cheapest return flights from Seattle to Taipei in September from $593

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

Return flights

11 Sep - 25 Sep Asiana Airlines
04 Sep - 18 Sep Asiana Airlines
24 Sep - 21 Oct Asiana Airlines
24 Sep - 28 Oct Asiana Airlines
23 Sep - 14 Oct Asiana Airlines
23 Sep - 21 Oct Asiana Airlines
24 Sep - 15 Oct Asiana Airlines
16 Sep - 15 Oct Asiana Airlines
02 Sep - 17 Sep Asiana Airlines
11 Sep - 25 Sep Delta direct
23 Sep - 07 Oct Delta direct
02 Sep - 17 Sep Delta direct
04 Sep - 18 Sep Delta direct
24 Sep - 21 Oct Delta direct
23 Sep - 14 Oct Delta direct
24 Sep - 15 Oct Delta direct
13 Sep - 20 Sep Asiana Airlines
06 Sep - 07 Sep STARLUX Airlines direct
13 Sep - 20 Sep Delta direct

Also check the deals for one-way flights from Seattle to Taipei in September.

Skyscanner

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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