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

Return flights

04 Sep - 16 Sep	Air India
04 Sep - 15 Sep	Air India
03 Sep - 23 Sep	Air India
08 Sep - 15 Sep	Air India
03 Sep - 03 Oct	Air India
04 Sep - 17 Sep	Air India
08 Sep - 22 Sep	Air India
05 Sep - 15 Sep	Air India
08 Sep - 23 Sep	Air India
12 Sep - 30 Sep	Air India
01 Sep - 15 Sep	Air India
01 Sep - 01 Oct	Air India
02 Sep - 02 Oct	Air India
01 Sep - 03 Oct	Air India
30 Sep - 14 Oct	easyJet
06 Sep - 04 Oct	Air India
19 Sep - 16 Oct	Air India
07 Sep - 06 Oct	Saudia
06 Sep - 13 Oct	AJet
13 Sep - 18 Oct	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 513€

Return flights