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

Return flights

27 Oct - 03 Nov	ANA
28 Oct - 27 Nov	Japan Airlines
29 Oct - 02 Nov	ANA
27 Oct - 04 Nov	ANA
29 Oct - 03 Nov	Japan Airlines
31 Oct - 03 Nov	Japan Airlines
26 Oct - 28 Oct	ANA
26 Oct - 27 Oct	ANA
28 Oct - 04 Nov	ANA
27 Oct - 29 Oct	ANA
28 Oct - 05 Nov	ANA
31 Oct - 07 Nov	ANA
25 Oct - 27 Oct	ANA
25 Oct - 28 Oct	ANA
26 Oct - 29 Oct	Japan Airlines
27 Oct - 01 Nov	ANA
25 Oct - 30 Oct	ANA
27 Oct - 31 Oct	Japan Airlines
24 Oct - 29 Oct	ANA

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

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 Seattle in October from 908€

Return flights