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

Return flights

29 Sep - 13 Oct	Wizz Air UK
24 Sep - 22 Oct	Wizz Air
20 Sep - 06 Oct	easyJet
17 Sep - 13 Oct	easyJet
22 Sep - 25 Oct	Ryanair
24 Sep - 08 Oct	easyJet
19 Sep - 13 Oct	easyJet
27 Sep - 01 Oct	Wizz Air UK
27 Sep - 13 Oct	Wizz Air UK
20 Sep - 03 Oct	Wizz Air UK
22 Sep - 29 Sep	Ryanair
27 Sep - 30 Sep	Wizz Air UK
24 Sep - 26 Sep	easyJet
19 Sep - 30 Sep	easyJet
22 Sep - 26 Sep	easyJet
17 Sep - 26 Sep	Wizz Air UK
12 Sep - 26 Sep	Wizz Air UK
11 Sep - 26 Sep	Wizz Air UK
13 Sep - 19 Sep	Wizz Air UK
11 Sep - 14 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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from London to Kathmandu in September from 617€

Return flights