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

Return flights

02 Sep - 23 Sep	Wizz Air
09 Sep - 23 Sep	Wizz Air
02 Sep - 25 Sep	Wizz Air
09 Sep - 22 Sep	Wizz Air
02 Sep - 18 Sep	Wizz Air
09 Sep - 18 Sep	Wizz Air
04 Sep - 21 Sep	Wizz Air UK
30 Sep - 07 Oct	Wizz Air UK
09 Sep - 09 Oct	Wizz Air
12 Sep - 07 Oct	Wizz Air
02 Sep - 06 Oct	Wizz Air
30 Sep - 13 Oct	Wizz Air UK
04 Sep - 19 Sep	Wizz Air UK
02 Sep - 04 Oct	Wizz Air
06 Sep - 05 Oct	Wizz Air UK
07 Sep - 21 Sep	Wizz Air UK
09 Sep - 05 Oct	Wizz Air
10 Sep - 18 Sep	Wizz Air Malta
30 Sep - 16 Oct	Wizz Air UK
18 Sep - 14 Oct	Wizz Air UK

Also check the deals for one-way flights from London 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 London to Kathmandu in September from 534€

Return flights