AirHint found the following cheapest return flights from Washington (IAD) to Beijing (PEK) in October 2025 (see full year).

Return flights

21 Oct - 28 Oct	Alaska Airlines
03 Oct - 10 Oct	Korean Air
10 Oct - 04 Nov	Alaska Airlines
03 Oct - 10 Oct	Air China	direct
04 Oct - 11 Oct	Hawaiian Airlines
21 Oct - 28 Oct	Air China	direct
11 Oct - 25 Oct	Etihad Airways

Also check the deals for one-way flights from Washington to Beijing in October.

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 Washington to Beijing in October from 943€

Return flights