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

Return flights

25 Sep - 30 Sep	Shandong Airlines
26 Sep - 28 Sep	Spring Airlines	direct
26 Sep - 12 Oct	Spring Airlines	direct
26 Sep - 13 Oct	Spring Airlines	direct
24 Sep - 23 Oct	Juneyao Airlines	direct
25 Sep - 02 Oct	Shandong Airlines
28 Sep - 03 Oct	Spring Airlines
26 Sep - 03 Oct	Spring Airlines	direct
26 Sep - 08 Oct	Spring Airlines	direct

Also check the deals for one-way flights from Nanjing 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 Nanjing to Cheju in September from 213€

Return flights