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

Return flights

02 Apr - 06 Apr	ANA
01 Apr - 12 Apr	ANA
26 Apr - 10 May	ANA
30 Apr - 10 May	ANA
03 Apr - 12 Apr	ANA
30 Apr - 09 May	ANA
15 Apr - 22 Apr	Japan Airlines
01 Apr - 04 Apr	ANA
28 Apr - 09 May	Japan Airlines
01 Apr - 10 Apr	Japan Airlines
04 Apr - 15 Apr	Japan Airlines
01 Apr - 06 Apr	Japan Airlines

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

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 April from $798

Return flights