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

Return flights

09 Sep - 18 Sep	Air India
04 Sep - 25 Sep	Air India
11 Sep - 25 Sep	Air India
07 Sep - 23 Sep	Air India
05 Sep - 18 Sep	Air India
08 Sep - 18 Sep	Air India
08 Sep - 22 Sep	Air India
06 Sep - 18 Sep	Air India
10 Sep - 17 Sep	Air India
09 Sep - 30 Sep	Air India
10 Sep - 02 Oct	SriLankan Airlines
11 Sep - 02 Oct	Turkish Airlines
04 Sep - 15 Oct	Thai Airways
15 Sep - 16 Oct	Thai Airways
18 Sep - 15 Oct	Thai Airways
01 Sep - 15 Oct	Thai Airways
19 Sep - 15 Oct	Thai Airways
14 Sep - 15 Oct	Thai Airways
20 Sep - 04 Oct	Thai Airways
16 Sep - 08 Oct	Thai Airways

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 $744

Return flights