AirHint found the following cheapest return flights from Seoul (ICN) to Nha Trang (CXR) in January 2026 (see full year).

Return flights

01 Jan - 04 Jan	China Southern
05 Jan - 29 Jan	China Southern
13 Jan - 16 Jan	VietJet Air
20 Jan - 23 Jan	VietJet Air
20 Jan - 26 Jan	VietJet Air
09 Jan - 18 Jan	VietJet Air
11 Jan - 16 Jan	VietJet Air
16 Jan - 23 Jan	VietJet Air
16 Jan - 25 Jan	VietJet Air
20 Jan - 29 Jan	VietJet Air
28 Jan - 02 Feb	China Southern
28 Jan - 01 Feb	China Southern
29 Jan - 02 Feb	China Southern
29 Jan - 01 Feb	China Southern
28 Jan - 03 Feb	China Southern
29 Jan - 03 Feb	China Southern
30 Jan - 06 Feb	VietJet Air
30 Jan - 04 Feb	VietJet Air
27 Jan - 01 Feb	VietJet Air
26 Jan - 02 Feb	VietJet Air

Also check the deals for one-way flights from Seoul to Nha Trang in January.

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 Seoul to Nha Trang in January from $245

Return flights