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

Return flights

05 Dec - 17 Dec	ITA Airways
05 Dec - 20 Dec	ITA Airways
12 Dec - 19 Dec	ITA Airways
01 Dec - 22 Dec	British Airways
10 Dec - 17 Dec	ITA Airways
01 Dec - 14 Dec	British Airways
05 Dec - 19 Dec	ITA Airways
06 Dec - 20 Dec	ITA Airways
09 Dec - 14 Dec	SWISS
09 Dec - 23 Dec	SWISS
16 Dec - 15 Jan	ITA Airways
01 Dec - 31 Jan	KLM
31 Dec - 13 Jan	KLM
29 Dec - 07 Jan	British Airways
30 Dec - 07 Jan	British Airways
15 Dec - 18 Jan	KLM
27 Dec - 07 Jan	British Airways
27 Dec - 13 Jan	British Airways
30 Dec - 17 Jan	KLM
29 Dec - 12 Jan	KLM

Also check the deals for one-way flights from London to Phuket 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 Phuket in December from 717€

Return flights