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

Return flights

08 Sep - 29 Sep	Aer Lingus
04 Sep - 15 Sep	Etihad Airways
16 Sep - 16 Oct	AJet
08 Sep - 23 Sep	Air India
04 Sep - 18 Sep	Etihad Airways
03 Sep - 01 Oct	Qatar Airways
01 Sep - 01 Oct	Qatar Airways
07 Sep - 21 Sep	Air India
08 Sep - 21 Sep	Air India
09 Sep - 21 Sep	Air India
10 Sep - 21 Sep	Air India
07 Sep - 22 Sep	Air India
07 Sep - 27 Sep	Air India
07 Sep - 03 Oct	Air India
06 Sep - 05 Oct	AJet
20 Sep - 08 Oct	easyJet
01 Sep - 05 Oct	Air India
03 Sep - 04 Oct	Air India
19 Sep - 06 Oct	Air India
04 Sep - 17 Oct	AJet

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 556€

Return flights