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

Return flights

15 Jun - 18 Jun	Jeju Air
17 Jun - 25 Jun	Jeju Air
22 Jun - 25 Jun	Jeju Air
09 Jun - 16 Jun	Jeju Air
09 Jun - 11 Jun	Jeju Air
18 Jun - 21 Jun	Jeju Air
08 Jun - 11 Jun	Jeju Air
26 Jun - 30 Jun	Jeju Air
09 Jun - 13 Jun	Jeju Air
07 Jun - 25 Jun	Jeju Air
28 Jun - 04 Jul	Jeju Air
30 Jun - 03 Jul	Air China
28 Jun - 10 Jul	Air China

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

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 Seoul to Hanoi in June from 252€

Return flights