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

Return flights

19 Sep - 24 Sep	Air China
29 Sep - 15 Oct	VietJet Air
27 Sep - 31 Oct	Thai VietJet Air
30 Sep - 03 Oct	Thai VietJet Air
25 Sep - 25 Oct	Thai VietJet Air
17 Sep - 27 Sep	Thai Airways
17 Sep - 23 Oct	Thai Airways
23 Sep - 30 Sep	Thai Airways
30 Sep - 06 Oct	Thai Airways
18 Sep - 16 Oct	Thai Airways
22 Sep - 23 Oct	Japan Airlines
26 Sep - 04 Oct	Thai Airways
27 Sep - 11 Oct	Thai Airways
21 Sep - 28 Sep	Thai Airways
25 Sep - 30 Sep	Japan Airlines

Also check the deals for one-way flights from Fukuoka to Kathmandu 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 Fukuoka to Kathmandu in September from $553

Return flights