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

Return flights

20 Apr - 24 Apr	VietJet Air
16 Apr - 21 Apr	Cebu Pacific
08 Apr - 14 Apr	Asiana Airlines	direct
20 Apr - 24 Apr	Asiana Airlines	direct
16 Apr - 21 Apr	Asiana Airlines	direct
26 Apr - 02 May	Cebu Pacific
01 Apr - 06 Apr	Asiana Airlines	direct
12 Apr - 24 Apr	AirAsia
19 Apr - 24 Apr	AirAsia
16 Apr - 24 Apr	AirAsia
17 Apr - 24 Apr	AirAsia
27 Apr - 13 May	AirAsia
24 Apr - 13 May	AirAsia
26 Apr - 02 May	Asiana Airlines	direct

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

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 April from $272

Return flights