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

Return flights

11 May - 25 May	VietJet Air	direct
18 May - 23 May	VietJet Air
18 May - 23 May	Asiana Airlines	direct
10 May - 20 May	AirAsia
11 May - 20 May	AirAsia
18 May - 20 May	AirAsia
10 May - 25 May	AirAsia
26 May - 03 Jun	AirAsia
25 May - 03 Jun	AirAsia
10 May - 22 May	AirAsia
24 May - 03 Jun	AirAsia
18 May - 25 May	AirAsia
11 May - 22 May	AirAsia
18 May - 03 Jun	AirAsia
27 May - 03 Jun	AirAsia

Also check the deals for one-way flights from Hanoi to Seoul in May.

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 May from 163€

Return flights