Cheapest return flights from Bangkok to Kathmandu in September from $234

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

Return flights

05 Sep - 12 Sep Thai AirAsia direct
14 Sep - 24 Sep Thai AirAsia direct
14 Sep - 18 Sep Thai AirAsia direct
14 Sep - 17 Sep Thai AirAsia direct
14 Sep - 19 Sep Thai AirAsia direct
14 Sep - 20 Sep Thai AirAsia direct
14 Sep - 02 Oct Thai AirAsia direct
14 Sep - 01 Oct Thai AirAsia direct
06 Sep - 14 Sep Thai Lion Air direct
14 Sep - 27 Sep Thai AirAsia direct
14 Sep - 29 Sep Thai AirAsia direct
14 Sep - 30 Sep Thai AirAsia direct
16 Sep - 02 Oct Thai AirAsia direct
12 Sep - 02 Oct Thai AirAsia direct
16 Sep - 01 Oct Thai AirAsia direct
13 Sep - 02 Oct Thai AirAsia direct
12 Sep - 01 Oct Thai AirAsia direct
11 Sep - 01 Oct Thai AirAsia direct
19 Sep - 02 Oct Thai AirAsia direct
19 Sep - 01 Oct 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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