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

Return flights

13 Sep - 15 Sep	Thai AirAsia
13 Sep - 17 Sep	Thai AirAsia
13 Sep - 16 Sep	Thai AirAsia
13 Sep - 23 Sep	Thai AirAsia
13 Sep - 20 Sep	Thai AirAsia
13 Sep - 22 Sep	Thai AirAsia
13 Sep - 29 Sep	Thai AirAsia
01 Sep - 08 Sep	Thai AirAsia
01 Sep - 15 Sep	Thai AirAsia
06 Sep - 08 Sep	Thai AirAsia
13 Sep - 01 Oct	Thai AirAsia
17 Sep - 07 Oct	Thai AirAsia
13 Sep - 03 Oct	Thai AirAsia
17 Sep - 01 Oct	Thai AirAsia
29 Sep - 07 Oct	Thai AirAsia
13 Sep - 02 Oct	Thai AirAsia
29 Sep - 01 Oct	Thai AirAsia
29 Sep - 08 Oct	Thai AirAsia
17 Sep - 03 Oct	Thai AirAsia
20 Sep - 07 Oct	Thai AirAsia

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

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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Cheapest return flights from Kathmandu to Osaka in September from 420€

Return flights