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

Return flights

28 Sep - 24 Oct	Wizz Air UK
24 Sep - 25 Oct	Wizz Air UK
07 Sep - 20 Sep	Wizz Air
01 Sep - 17 Sep	Wizz Air Malta
21 Sep - 17 Oct	Wizz Air UK
03 Sep - 17 Sep	Wizz Air UK
27 Sep - 24 Oct	Wizz Air UK
23 Sep - 19 Oct	Wizz Air UK
26 Sep - 17 Oct	Wizz Air UK
01 Sep - 18 Sep	Wizz Air UK
25 Sep - 14 Oct	Wizz Air UK
19 Sep - 13 Oct	Wizz Air UK
27 Sep - 12 Oct	Wizz Air UK
16 Sep - 10 Oct	Wizz Air UK
12 Sep - 27 Sep	Wizz Air UK
12 Sep - 26 Sep	Wizz Air UK
01 Sep - 22 Sep	easyJet
08 Sep - 22 Sep	easyJet
17 Sep - 24 Sep	Wizz Air UK
19 Sep - 26 Sep	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 613€

Return flights