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

Return flights

03 Mar - 11 Mar	HK Express
04 Mar - 08 Mar	HK Express
12 Mar - 19 Mar	VietJet Air
13 Mar - 18 Mar	HK Express
13 Mar - 19 Mar	HK Express
06 Mar - 17 Mar	HK Express
30 Mar - 03 Apr	VietJet Air
01 Mar - 05 Mar	VietJet Air
28 Mar - 04 Apr	VietJet Air
28 Mar - 03 Apr	VietJet Air
31 Mar - 04 Apr	VietJet Air
27 Mar - 04 Apr	VietJet Air
09 Mar - 15 Mar	VietJet Air
26 Mar - 06 Apr	VietJet Air
13 Mar - 15 Mar	HK Express
12 Mar - 16 Mar	VietJet Air
30 Mar - 02 Apr	VietJet Air
09 Mar - 01 Apr	VietJet Air
27 Mar - 06 Apr	VietJet Air
29 Mar - 05 Apr	VietJet Air

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 $238

Return flights