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

Return flights

03 Mar - 25 Mar	T'way Air
04 Mar - 20 Mar	Jin Air
08 Mar - 14 Mar	Air Busan
02 Mar - 25 Mar	Air Busan
07 Mar - 14 Mar	Air Busan
02 Mar - 10 Mar	Air Busan
02 Mar - 09 Mar	Air Busan
02 Mar - 07 Mar	Air Busan
02 Mar - 06 Mar	Air Busan
18 Mar - 15 Apr	Jeju Air
20 Mar - 23 Mar	Air China
25 Mar - 25 Apr	Jeju Air
18 Mar - 05 Apr	Air China
31 Mar - 05 Apr	Air China
20 Mar - 11 Apr	Air China
03 Mar - 03 Apr	Jeju Air
29 Mar - 03 Apr	Jeju Air
28 Mar - 03 Apr	Jeju Air
30 Mar - 04 Apr	Jeju Air
25 Mar - 05 Apr	Jeju Air

Also check the deals for one-way flights from Seoul to Hanoi 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 Seoul to Hanoi in March from 230€

Return flights