Cheapest return flights from Taipei to Seattle in September from $628

Best time to book flights for Taipei (TPE) to Seattle (SEA) flights at AirHint

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
19 Sep - 30 Sep United
14 Sep - 21 Sep United
08 Sep - 20 Sep United
20 Sep - 27 Sep United
12 Sep - 27 Sep United
05 Sep - 16 Sep United
12 Sep - 29 Sep United
12 Sep - 28 Sep United
29 Sep - 13 Oct United
27 Sep - 13 Oct United
28 Sep - 13 Oct United
24 Sep - 01 Oct United
24 Sep - 06 Oct United
28 Sep - 09 Oct United
26 Sep - 12 Oct United
26 Sep - 13 Oct United
29 Sep - 13 Oct Delta direct
27 Sep - 13 Oct Delta direct

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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