Cheapest return flights from Bangkok to Kathmandu in September from $215

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

12 Sep - 14 Sep Thai AirAsia direct
08 Sep - 14 Sep Thai AirAsia direct
12 Sep - 15 Sep Thai AirAsia direct
08 Sep - 15 Sep Thai AirAsia direct
19 Sep - 29 Sep Thai AirAsia direct
15 Sep - 29 Sep Thai AirAsia direct
12 Sep - 29 Sep Thai AirAsia direct
12 Sep - 19 Sep Thai AirAsia direct
15 Sep - 19 Sep Thai AirAsia direct
08 Sep - 19 Sep Thai AirAsia direct
24 Sep - 10 Oct Thai AirAsia direct
24 Sep - 13 Oct Thai AirAsia direct
15 Sep - 20 Oct Thai AirAsia direct
24 Sep - 12 Oct Thai AirAsia direct
19 Sep - 06 Oct Thai AirAsia direct
24 Sep - 06 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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