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

Return flights

03 Oct - 20 Oct	Delta	direct
09 Oct - 19 Oct	Delta	direct
05 Oct - 19 Oct	Delta	direct
08 Oct - 19 Oct	Delta	direct
19 Oct - 26 Oct	Delta	direct
10 Oct - 16 Oct	Delta	direct
19 Oct - 25 Oct	Delta	direct
22 Oct - 29 Oct	Delta	direct
15 Oct - 23 Oct	Delta	direct
03 Oct - 16 Oct	Delta	direct
26 Oct - 06 Nov	Delta	direct
28 Oct - 06 Nov	Delta	direct
27 Oct - 03 Nov	Delta	direct
24 Oct - 02 Nov	Delta	direct
23 Oct - 02 Nov	Delta	direct
21 Oct - 04 Nov	Delta	direct
05 Oct - 18 Nov	Delta	direct
23 Oct - 05 Nov	Delta	direct
14 Oct - 28 Nov	Delta	direct
14 Oct - 24 Nov	Delta	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 548€

Return flights