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

Return flights

08 Sep - 30 Sep	Wizz Air Malta
29 Sep - 22 Oct	Wizz Air
08 Sep - 23 Sep	Wizz Air Malta
09 Sep - 09 Oct	Wizz Air
08 Sep - 01 Oct	Wizz Air Malta
01 Sep - 18 Sep	Ryanair
29 Sep - 13 Oct	Wizz Air
08 Sep - 08 Oct	Wizz Air Malta
09 Sep - 18 Sep	Wizz Air
02 Sep - 30 Sep	Wizz Air UK
07 Sep - 30 Sep	Wizz Air UK
22 Sep - 30 Sep	easyJet
29 Sep - 17 Oct	Wizz Air
04 Sep - 19 Sep	Wizz Air Malta
23 Sep - 30 Sep	Ryanair
29 Sep - 28 Oct	Wizz Air
23 Sep - 02 Oct	Ryanair
08 Sep - 22 Sep	Wizz Air Malta
29 Sep - 15 Oct	Wizz Air
02 Sep - 06 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 526€

Return flights