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

Return flights

03 Mar - 06 Mar	T'way Air
16 Mar - 16 Apr	Jeju Air
02 Mar - 06 Mar	Air Busan
01 Mar - 06 Mar	Air Busan
06 Mar - 20 Mar	T'way Air
07 Mar - 21 Mar	T'way Air
01 Mar - 04 Mar	Air Busan
23 Mar - 27 Mar	Air Busan
17 Mar - 25 Mar	T'way Air
01 Mar - 05 Mar	Air Busan
21 Mar - 24 Mar	Eastar Jet
30 Mar - 03 Apr	Korean Air

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

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 March from $209

Return flights