AirHint found the following cheapest return flights from Frankfurt (FRA) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

12 Sep - 02 Oct	Pegasus Airlines
07 Sep - 27 Sep	Pegasus Airlines
07 Sep - 14 Oct	Pegasus Airlines
14 Sep - 28 Sep	Air India
23 Sep - 14 Oct	Pegasus Airlines
29 Sep - 20 Oct	Air India
14 Sep - 20 Sep	Air India
30 Sep - 19 Oct	Pegasus Airlines
30 Sep - 20 Oct	AJet
29 Sep - 21 Oct	Air India
29 Sep - 22 Oct	Air India
04 Sep - 25 Sep	Air India
13 Sep - 26 Sep	Air India
12 Sep - 19 Sep	Air India
01 Sep - 30 Sep	Air Serbia
06 Sep - 04 Oct	Air India
12 Sep - 26 Sep	Air India
30 Sep - 21 Oct	Air India
04 Sep - 18 Sep	Etihad Airways

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Kathmandu in September from 603€

Return flights