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

Return flights

22 Apr - 28 Apr	Japan Airlines
22 Apr - 29 Apr	Japan Airlines
30 Apr - 04 May	ANA
29 Apr - 03 May	ANA
25 Apr - 02 May	ANA
24 Apr - 04 May	ANA
30 Apr - 07 May	ANA
24 Apr - 07 May	ANA
25 Apr - 07 May	ANA
17 Apr - 28 Apr	Japan Airlines
28 Apr - 13 May	Japan Airlines
01 Apr - 28 Apr	Japan Airlines
01 Apr - 13 Apr	Japan Airlines
23 Apr - 01 May	Japan Airlines
29 Apr - 13 May	Japan Airlines
01 Apr - 26 Apr	Japan Airlines
01 Apr - 27 Apr	Japan Airlines
01 Apr - 25 Apr	Japan Airlines
02 Apr - 19 Apr	Japan Airlines
02 Apr - 17 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 $1126

Return flights