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

Return flights

01 Sep - 30 Sep	Wizz Air UK
09 Sep - 06 Oct	Wizz Air Malta
14 Sep - 06 Oct	Wizz Air
14 Sep - 28 Sep	Wizz Air
22 Sep - 03 Oct	Wizz Air UK
06 Sep - 25 Sep	Wizz Air Malta
02 Sep - 19 Sep	Wizz Air Malta
05 Sep - 27 Sep	Wizz Air UK
08 Sep - 11 Sep	Wizz Air UK
27 Sep - 16 Oct	Wizz Air UK
18 Sep - 30 Sep	Wizz Air UK
10 Sep - 13 Oct	Wizz Air UK
11 Sep - 23 Sep	Turkish Airlines
30 Sep - 20 Oct	easyJet
21 Sep - 28 Sep	Turkish Airlines
03 Sep - 15 Sep	easyJet
24 Sep - 05 Oct	Turkish Airlines
28 Sep - 22 Oct	Turkish Airlines
28 Sep - 27 Oct	Wizz Air UK
21 Sep - 13 Oct	Corendon 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 $693

Return flights