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

Return flights

06 Mar - 18 Mar	VietJet Air
05 Mar - 10 Mar	HK Express
05 Mar - 18 Mar	HK Express
13 Mar - 19 Mar	HK Express
03 Mar - 12 Mar	HK Express
07 Mar - 13 Mar	HK Express
06 Mar - 13 Mar	HK Express
06 Mar - 12 Mar	HK Express
13 Mar - 16 Mar	Philippine Airlines
18 Mar - 21 Mar	HK Express
28 Mar - 04 Apr	VietJet Air
28 Mar - 03 Apr	VietJet Air
30 Mar - 02 Apr	VietJet Air
28 Mar - 03 Apr	Asiana Airlines	direct
28 Mar - 04 Apr	Asiana Airlines	direct

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 191€

Return flights