AirHint found the following cheapest return flights from Beijing (PEK) to Cheju (CJU) in September 2025 (see full year).

Return flights

21 Sep - 24 Sep	Air China	direct
21 Sep - 26 Sep	Air China	direct
27 Sep - 30 Sep	Shandong Airlines
26 Sep - 30 Sep	Shandong Airlines
27 Sep - 01 Oct	Shandong Airlines
28 Sep - 01 Oct	Shandong Airlines
25 Sep - 03 Oct	Jeju Air	direct
27 Sep - 30 Sep	Korean Air	direct
27 Sep - 01 Oct	Jeju Air	direct
28 Sep - 02 Oct	Shandong Airlines
27 Sep - 02 Oct	Shandong Airlines
27 Sep - 02 Oct	Korean Air	direct
29 Sep - 02 Oct	Korean Air
30 Sep - 06 Oct	Jeju Air
29 Sep - 07 Oct	Shandong Airlines

Also check the deals for one-way flights from Beijing to Cheju in September.

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 Beijing to Cheju in September from 163€

Return flights