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

Return flights

26 Sep - 24 Oct	Pegasus Airlines
01 Sep - 12 Sep	Qatar Airways
15 Sep - 05 Oct	Qatar Airways
25 Sep - 05 Oct	Qatar Airways
24 Sep - 29 Oct	Turkish Airlines
28 Sep - 28 Oct	Turkish Airlines
29 Sep - 31 Oct	Qatar Airways
27 Sep - 25 Oct	Qatar Airways
26 Sep - 26 Oct	Turkish Airlines
27 Sep - 24 Oct	Turkish Airlines
28 Sep - 25 Oct	Emirates

Also check the deals for one-way flights from Hamburg 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 Hamburg to Kathmandu in September from 734€

Return flights