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

Return flights

03 Dec - 14 Dec	Pegasus Airlines
27 Dec - 05 Jan	Ryanair
18 Dec - 31 Dec	Ryanair
07 Dec - 20 Dec	Ryanair
25 Dec - 16 Jan	Pegasus Airlines
18 Dec - 14 Jan	Ryanair
08 Dec - 15 Dec	Pegasus Airlines
26 Dec - 02 Jan	Pegasus Airlines
01 Dec - 15 Dec	Emirates
01 Dec - 31 Jan	Emirates
03 Dec - 10 Dec	Emirates
31 Dec - 23 Jan	Emirates
05 Dec - 14 Dec	Emirates
07 Dec - 30 Jan	Emirates
01 Dec - 31 Dec	Emirates
09 Dec - 17 Dec	Emirates
29 Dec - 26 Jan	Emirates
01 Dec - 16 Jan	Emirates
01 Dec - 30 Dec	Emirates
01 Dec - 10 Jan	Emirates

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 $791

Return flights