Cheapest return flights from Bangkok to Kathmandu in September from $320

Best time to book flights for Bangkok (DMK) to Kathmandu (KTM) flights at AirHint

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

Return flights

19 Sep - 26 Sep Thai AirAsia direct
19 Sep - 28 Sep Thai AirAsia direct
19 Sep - 06 Oct Thai AirAsia direct
22 Sep - 06 Oct Thai AirAsia direct
22 Sep - 26 Sep Thai AirAsia direct
22 Sep - 28 Sep Thai AirAsia direct

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

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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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