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

Return flights

16 Apr - 23 Apr	United
02 Apr - 11 Apr	EVA Air
03 Apr - 10 Apr	EVA Air
04 Apr - 11 Apr	EVA Air
03 Apr - 11 Apr	EVA Air
02 Apr - 07 Apr	Cathay Pacific	direct
02 Apr - 02 May	Cathay Pacific	direct
01 Apr - 08 Apr	Cathay Pacific	direct
16 Apr - 23 Apr	Cathay Pacific	direct
01 Apr - 09 Apr	Cathay Pacific	direct
29 Apr - 20 May	Philippine Airlines
20 Apr - 27 Apr	Hong Kong Airlines
27 Apr - 20 May	EVA Air
27 Apr - 20 May	Cathay Pacific	direct
29 Apr - 20 May	Cathay Pacific	direct

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Seattle in April from $600

Return flights