Cheapest return flights from Bangkok to Kathmandu in September from $214

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

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

Return flights

12 Sep - 16 Sep Thai AirAsia direct
03 Sep - 02 Oct Thai AirAsia direct
20 Sep - 23 Sep Thai AirAsia direct
19 Sep - 23 Sep Thai AirAsia direct
01 Sep - 11 Sep Thai AirAsia direct
01 Sep - 13 Sep Thai AirAsia direct
13 Sep - 23 Sep Thai AirAsia direct
05 Sep - 23 Sep Thai AirAsia direct
08 Sep - 23 Sep Thai AirAsia direct
05 Sep - 11 Sep Thai AirAsia direct
05 Sep - 13 Sep Thai AirAsia direct
20 Sep - 10 Oct Thai AirAsia direct
25 Sep - 12 Oct Thai AirAsia direct
25 Sep - 10 Oct Thai AirAsia direct
20 Sep - 07 Oct Thai AirAsia direct
27 Sep - 12 Oct Thai AirAsia direct
25 Sep - 14 Oct Thai AirAsia direct
19 Sep - 07 Oct Thai AirAsia direct
20 Sep - 02 Oct Thai AirAsia direct
20 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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