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

Return flights

19 Sep - 27 Sep	AJet
17 Sep - 11 Oct	AJet
19 Sep - 19 Oct	AJet
17 Sep - 29 Sep	AJet
18 Sep - 30 Sep	AJet
19 Sep - 04 Oct	AJet
22 Sep - 18 Oct	AJet
19 Sep - 02 Oct	AJet
25 Sep - 23 Oct	AJet
27 Sep - 18 Oct	AJet
22 Sep - 06 Oct	AJet
22 Sep - 29 Sep	AJet
27 Sep - 04 Oct	AJet
27 Sep - 13 Oct	AJet
20 Sep - 27 Sep	AJet
21 Sep - 28 Sep	Saudia
21 Sep - 30 Sep	ITA Airways
24 Sep - 27 Sep	Air India

Also check the deals for one-way flights from Paris 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 Paris to Kathmandu in September from 562€

Return flights