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

Return flights

06 Apr - 19 Apr	VietJet Air
05 Apr - 19 Apr	VietJet Air
08 Apr - 11 Apr	VietJet Air
01 Apr - 09 Apr	VietJet Air
01 Apr - 04 Apr	VietJet Air
01 Apr - 08 Apr	VietJet Air
03 Apr - 10 Apr	VietJet Air
03 Apr - 08 Apr	VietJet Air
26 Apr - 27 Apr	VietJet Air
03 Apr - 06 Apr	VietJet Air
22 Apr - 11 May	AirAsia
24 Apr - 11 May	AirAsia
26 Apr - 11 May	AirAsia
23 Apr - 11 May	AirAsia
16 Apr - 04 May	AirAsia
24 Apr - 13 May	AirAsia
26 Apr - 13 May	AirAsia
23 Apr - 13 May	AirAsia
22 Apr - 04 May	AirAsia
24 Apr - 04 May	AirAsia

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Hanoi to Seoul in April from $262

Return flights