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

Return flights

04 Oct - 14 Oct	United
12 Oct - 31 Oct	United
23 Oct - 31 Oct	United
02 Oct - 14 Oct	United
08 Oct - 17 Oct	United
09 Oct - 17 Oct	United
09 Oct - 16 Oct	United
09 Oct - 12 Oct	United
02 Oct - 17 Oct	United
05 Oct - 12 Oct	United
29 Oct - 05 Nov	United
24 Oct - 01 Nov	United
25 Oct - 01 Nov	United
28 Oct - 02 Nov	United
29 Oct - 05 Nov	STARLUX Airlines	direct
25 Oct - 01 Nov	STARLUX Airlines	direct
10 Oct - 21 Nov	STARLUX Airlines	direct
28 Oct - 02 Nov	STARLUX Airlines	direct

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 $639

Return flights