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

Return flights

05 Dec - 24 Jan	Wizz Air
07 Dec - 16 Jan	Wizz Air UK
01 Dec - 06 Dec	Wizz Air UK
12 Dec - 24 Jan	Wizz Air UK
06 Dec - 16 Jan	Ryanair
05 Dec - 20 Jan	Wizz Air
04 Dec - 12 Dec	Ryanair
09 Dec - 16 Dec	Ryanair
08 Dec - 24 Dec	Ryanair
10 Dec - 20 Dec	Pegasus Airlines
04 Dec - 18 Dec	Ryanair
02 Dec - 18 Dec	Wizz Air UK
05 Dec - 12 Dec	Ryanair
12 Dec - 19 Jan	Wizz Air UK
11 Dec - 18 Dec	Wizz Air UK
12 Dec - 19 Dec	Ryanair
05 Dec - 11 Jan	Wizz Air
05 Dec - 13 Jan	Wizz Air
05 Dec - 15 Jan	Wizz Air UK
14 Dec - 21 Jan	Wizz Air UK

Also check the deals for one-way flights from London to Kathmandu in December.

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 December from 428€

Return flights