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

Return flights

21 Sep - 12 Oct	Wizz Air UK
14 Sep - 27 Sep	Wizz Air UK
14 Sep - 23 Sep	Wizz Air UK
18 Sep - 29 Sep	Wizz Air UK
14 Sep - 22 Sep	Wizz Air UK
29 Sep - 21 Oct	Norwegian Air Sweden AOC
29 Sep - 15 Oct	Norwegian Air Sweden AOC
25 Sep - 14 Oct	Wizz Air UK
11 Sep - 27 Sep	Wizz Air UK
11 Sep - 28 Sep	Wizz Air UK
16 Sep - 02 Oct	Wizz Air UK
04 Sep - 18 Sep	Wizz Air UK
14 Sep - 11 Oct	Wizz Air UK
25 Sep - 30 Sep	Wizz Air UK
27 Sep - 15 Oct	Gulf Air
01 Sep - 30 Sep	Wizz Air UK
02 Sep - 30 Sep	Wizz Air UK
28 Sep - 22 Oct	Wizz Air
01 Sep - 01 Oct	Wizz Air UK
26 Sep - 17 Oct	Vueling Airlines

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 554€

Return flights