Cheapest return flights from Taipei to Seattle in September from $634

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

Return flights

19 Sep - 27 Sep United
18 Sep - 27 Sep United
06 Sep - 15 Sep United
01 Sep - 07 Sep United
17 Sep - 22 Sep United
03 Sep - 20 Sep United
21 Sep - 30 Sep United
05 Sep - 13 Sep United
20 Sep - 22 Sep United
07 Sep - 11 Sep United
26 Sep - 12 Oct United
27 Sep - 12 Oct United
26 Sep - 21 Oct United
27 Sep - 06 Oct United
15 Sep - 02 Oct United
08 Sep - 07 Oct United
11 Sep - 24 Oct United
23 Sep - 01 Oct United
27 Sep - 10 Oct United
26 Sep - 03 Oct United

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