AirHint found the following cheapest return flights from Hanoi (HAN) to Seoul (ICN) in March 2026 (see full year).

Return flights

12 Mar - 22 Mar	VietJet Air	direct
03 Mar - 04 Mar	VietJet Air	direct
04 Mar - 09 Mar	AirAsia
04 Mar - 11 Mar	AirAsia
02 Mar - 07 Mar	Jeju Air	direct
07 Mar - 09 Mar	AirAsia
07 Mar - 11 Mar	AirAsia
04 Mar - 06 Mar	AirAsia
06 Mar - 09 Mar	AirAsia
06 Mar - 11 Mar	AirAsia
14 Mar - 01 Apr	AirAsia
14 Mar - 03 Apr	AirAsia
12 Mar - 01 Apr	AirAsia
13 Mar - 01 Apr	AirAsia
31 Mar - 17 Apr	AirAsia
31 Mar - 15 Apr	AirAsia
30 Mar - 17 Apr	AirAsia
30 Mar - 15 Apr	AirAsia
17 Mar - 01 Apr	AirAsia
17 Mar - 03 Apr	AirAsia

Also check the deals for one-way flights from Hanoi to Seoul 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 Hanoi to Seoul in March from $192

Return flights