Cheapest return flights from Kathmandu to Hanoi in September from $621

Best time to book flights for Kathmandu (KTM) to Hanoi (HAN) flights at AirHint

AirHint found the following cheapest return flights from Kathmandu (KTM) to Hanoi (HAN) in September 2025 (see full year).

Return flights

30 Sep - 16 Oct Thai Airways
17 Sep - 24 Sep China Southern

Also check the deals for one-way flights from Kathmandu to Hanoi in September.

Skyscanner

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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