AirHint found the following cheapest return flights from London (LON) to Santiago (SCL) in December 2025 (see full year).

Return flights

05 Dec - 08 Dec	Lufthansa
02 Dec - 28 Jan	Air Canada
04 Dec - 11 Dec	Vueling Airlines
03 Dec - 10 Dec	Vueling Airlines
01 Dec - 08 Dec	Ryanair
06 Dec - 09 Dec	SWISS
03 Dec - 29 Jan	Air Canada
03 Dec - 28 Jan	Air Canada
03 Dec - 05 Dec	Wizz Air UK
10 Dec - 25 Dec	Air Canada
04 Dec - 05 Dec	easyJet
10 Dec - 20 Jan	Air Canada
04 Dec - 25 Dec	Vueling Airlines
10 Dec - 24 Dec	Air Canada
03 Dec - 30 Jan	Wizz Air UK
31 Dec - 31 Jan	Ryanair
14 Dec - 16 Jan	Finnair
11 Dec - 20 Jan	Finnair
12 Dec - 21 Jan	Vueling Airlines
09 Dec - 20 Jan	Air Canada

Also check the deals for one-way flights from London to Santiago 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 Santiago in December from 820€

Return flights