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

Return flights

01 Sep - 25 Sep	Wizz Air UK
01 Sep - 28 Sep	Wizz Air UK
02 Sep - 21 Sep	Wizz Air Malta
01 Sep - 16 Sep	Wizz Air UK
03 Sep - 19 Sep	Wizz Air UK
09 Sep - 02 Oct	Wizz Air Malta
01 Sep - 11 Sep	Wizz Air UK
03 Sep - 24 Sep	Wizz Air UK
11 Sep - 25 Sep	Wizz Air Malta
01 Sep - 20 Sep	Wizz Air UK
08 Sep - 14 Sep	Wizz Air UK
03 Sep - 02 Oct	Wizz Air UK
01 Sep - 15 Oct	Wizz Air UK
13 Sep - 01 Oct	Wizz Air Malta
16 Sep - 08 Oct	Wizz Air Malta
09 Sep - 04 Oct	Wizz Air Malta
17 Sep - 28 Oct	Wizz Air Malta
30 Sep - 28 Oct	Wizz Air Malta
20 Sep - 17 Oct	Wizz Air Malta
29 Sep - 26 Oct	Wizz Air

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 503€

Return flights