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

Return flights

14 May - 01 Jun	ANA
12 May - 19 May	ANA
14 May - 28 May	ANA
13 May - 28 May	ANA
18 May - 31 May	ANA
10 May - 21 May	ANA
05 May - 30 Jun	ANA
15 May - 25 May	ANA
14 May - 29 May	ANA
15 May - 26 May	ANA
05 May - 14 May	ANA
09 May - 12 May	ANA
31 May - 26 Jun	Japan Airlines
22 May - 21 Jun	Japan Airlines
30 May - 26 Jun	Japan Airlines
11 May - 11 Jun	ANA
16 May - 20 Jun	Japan Airlines
29 May - 09 Jun	Japan Airlines
27 May - 12 Jun	Japan Airlines
31 May - 07 Jun	Japan Airlines

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 $860

Return flights