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

Return flights

07 Sep - 22 Sep	Wizz Air
24 Sep - 11 Oct	Pegasus Airlines
04 Sep - 20 Sep	Wizz Air
18 Sep - 06 Oct	Wizz Air
18 Sep - 04 Oct	Wizz Air
18 Sep - 09 Oct	Pegasus Airlines
01 Sep - 20 Sep	Wizz Air UK
02 Sep - 26 Sep	Wizz Air UK
11 Sep - 26 Sep	Ryanair
12 Sep - 10 Oct	Wizz Air Malta
08 Sep - 30 Sep	Ryanair
05 Sep - 19 Sep	Wizz Air UK
18 Sep - 10 Oct	Wizz Air
04 Sep - 21 Sep	Wizz Air
06 Sep - 21 Sep	Ryanair
27 Sep - 11 Oct	Pegasus Airlines
12 Sep - 26 Sep	Wizz Air Malta
28 Sep - 10 Oct	Wizz Air UK
19 Sep - 10 Oct	Pegasus Airlines
27 Sep - 24 Oct	Pegasus 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 $607

Return flights