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

Return flights

21 Sep - 30 Sep	Wizz Air Malta
02 Sep - 16 Sep	Wizz Air Malta
17 Sep - 30 Sep	Wizz Air Malta
12 Sep - 29 Sep	Fly One
12 Sep - 26 Sep	Fly One
14 Sep - 03 Oct	Wizz Air UK
01 Sep - 08 Sep	Wizz Air UK
04 Sep - 03 Oct	Wizz Air UK
01 Sep - 17 Sep	easyJet
01 Sep - 14 Sep	Wizz Air Malta
09 Sep - 19 Sep	easyJet
04 Sep - 25 Sep	Wizz Air UK
19 Sep - 04 Oct	Wizz Air Malta
04 Sep - 02 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 559€

Return flights