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

Return flights

05 Dec - 16 Dec	Wizz Air UK
04 Dec - 14 Dec	Wizz Air UK
07 Dec - 12 Jan	Wizz Air UK
08 Dec - 13 Jan	Wizz Air UK
08 Dec - 28 Dec	Wizz Air UK
01 Dec - 25 Dec	Wizz Air UK
07 Dec - 13 Jan	Wizz Air UK
10 Dec - 21 Dec	Wizz Air UK
11 Dec - 07 Jan	Wizz Air UK
11 Dec - 22 Dec	Wizz Air UK
07 Dec - 12 Dec	Pegasus Airlines
10 Dec - 18 Dec	Wizz Air UK
07 Dec - 11 Dec	Pegasus Airlines
26 Dec - 17 Jan	Wizz Air UK
25 Dec - 22 Jan	Wizz Air UK
02 Dec - 27 Dec	Ryanair
25 Dec - 07 Jan	Wizz Air UK
26 Dec - 06 Jan	Wizz Air UK
13 Dec - 21 Jan	Aegean Airlines
26 Dec - 04 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 $558

Return flights