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

Return flights

28 Oct - 28 Nov	Turkish Airlines
03 Oct - 07 Oct	Korean Air
03 Oct - 24 Oct	Frontier Airlines
30 Oct - 06 Nov	Turkish Airlines
22 Oct - 15 Nov	Frontier Airlines
17 Oct - 24 Oct	WestJet
12 Oct - 18 Oct	Royal Jordanian
31 Oct - 07 Nov	Emirates
10 Oct - 24 Oct	Frontier Airlines
11 Oct - 25 Oct	Saudia
03 Oct - 07 Oct	Air China	direct

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 867€

Return flights