AirHint found the following cheapest return flights from London (LHR) to Kathmandu (KTM) in December 2026 (see full year).

Return flights

05 Dec - 19 Dec	Oman Air
12 Dec - 08 Jan	Air France
01 Dec - 30 Dec	Air France
12 Dec - 09 Jan	Oman Air
15 Dec - 31 Dec	Scandinavian Airlines
08 Dec - 31 Dec	Oman Air
12 Dec - 30 Dec	KLM
11 Dec - 03 Jan	Oman Air
10 Dec - 31 Dec	Oman Air
15 Dec - 01 Jan	Scandinavian Airlines
10 Dec - 03 Jan	Oman Air
10 Dec - 02 Jan	Oman Air
11 Dec - 01 Jan	KLM
13 Dec - 20 Dec	KLM
01 Dec - 15 Dec	Air France
10 Dec - 01 Jan	Oman Air
09 Dec - 10 Jan	Lufthansa
24 Dec - 10 Jan	Air France
24 Dec - 31 Dec	Air France
16 Dec - 17 Dec	LOT

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 708€

Return flights