AirHint found the following cheapest return flights from Taipei (TPE) to Seattle (SEA) in May 2026 (see full year).

Return flights

07 May - 18 May	Cathay Pacific
05 May - 12 May	Cathay Pacific
07 May - 19 May	Cathay Pacific
12 May - 19 May	Cathay Pacific
01 May - 13 May	Cathay Pacific
08 May - 16 May	Cathay Pacific
07 May - 14 May	Cathay Pacific
01 May - 11 May	Cathay Pacific
01 May - 12 May	Cathay Pacific
12 May - 18 May	Delta	direct
21 May - 01 Jun	Delta	direct
17 May - 01 Jun	Delta	direct
29 May - 10 Jun	Korean Air
21 May - 07 Jun	EVA Air	direct
29 May - 10 Jun	EVA Air	direct
31 May - 07 Jun	EVA Air	direct
28 May - 06 Jun	Delta

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

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 May from 511€

Return flights