AirHint found the following cheapest return flights from London (LCY) to Muscat (MCT) in December 2025 (see full year).

Return flights

03 Dec - 09 Dec	KLM
11 Dec - 14 Dec	KLM
03 Dec - 17 Dec	SWISS
10 Dec - 15 Dec	SWISS
10 Dec - 16 Dec	KLM
09 Dec - 16 Dec	SWISS
10 Dec - 17 Dec	SWISS
02 Dec - 09 Dec	KLM
09 Dec - 17 Dec	SWISS
09 Dec - 14 Jan	SWISS
09 Dec - 12 Dec	SWISS
09 Dec - 13 Jan	SWISS
15 Dec - 14 Jan	KLM
04 Dec - 13 Jan	KLM
15 Dec - 18 Jan	SWISS
09 Dec - 10 Jan	KLM
11 Dec - 12 Jan	SWISS
13 Dec - 18 Jan	KLM
30 Dec - 14 Jan	Lufthansa
16 Dec - 11 Jan	KLM

Also check the deals for one-way flights from London to Muscat 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 Muscat in December from 508€

Return flights