AirHint found the following cheapest return flights from London (LGW) to Miami (MIA) in December 2025 (see full year).

Return flights

11 Dec - 14 Dec	Icelandair
02 Dec - 07 Dec	Icelandair
04 Dec - 12 Dec	Icelandair
06 Dec - 10 Dec	Icelandair
04 Dec - 11 Dec	Vueling Airlines
01 Dec - 08 Dec	Vueling Airlines
04 Dec - 08 Dec	Vueling Airlines
03 Dec - 10 Dec	Finnair
09 Dec - 15 Dec	Finnair
09 Dec - 24 Dec	Finnair
06 Dec - 11 Jan	TAP
12 Dec - 12 Jan	TAP
13 Dec - 13 Jan	TAP
21 Dec - 07 Jan	Vueling Airlines
09 Dec - 08 Jan	Norse Atlantic Airways (UK)
30 Dec - 11 Jan	British Airways
28 Dec - 28 Jan	British Airways
12 Dec - 10 Jan	Norse Atlantic Airways (UK)
15 Dec - 15 Jan	TAP
23 Dec - 05 Jan	Vueling Airlines

Also check the deals for one-way flights from London to Miami 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 Miami in December from 348€

Return flights