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

Return flights

09 Apr - 16 Apr	Korean Air
11 Apr - 18 Apr	Korean Air
09 Apr - 30 Apr	Korean Air
11 Apr - 30 Apr	Korean Air
11 Apr - 02 May	Korean Air
13 Apr - 20 Apr	Korean Air
15 Apr - 22 Apr	Korean Air
01 Apr - 01 May	Korean Air
10 Apr - 17 Apr	Asiana Airlines
14 Apr - 21 Apr	Asiana Airlines
12 Apr - 19 Apr	Korean Air
14 Apr - 21 Apr	Hainan Airlines	direct

Also check the deals for one-way flights from Seattle to Beijing 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 Seattle to Beijing in April from 550€

Return flights