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

Return flights

25 Dec - 22 Jan	Air France
25 Dec - 28 Jan	Air France
20 Dec - 04 Jan	Iberia For Level
12 Dec - 17 Jan	LATAM Airlines Group
18 Dec - 01 Jan	British Airways
25 Dec - 30 Jan	Air France
25 Dec - 01 Jan	British Airways
23 Dec - 13 Jan	British Airways
26 Dec - 02 Jan	Air France
05 Dec - 17 Dec	Iberia For Level
26 Dec - 03 Jan	British Airways
07 Dec - 20 Dec	LATAM Airlines Group
07 Dec - 19 Dec	LATAM Airlines Group

Also check the deals for one-way flights from Santiago to London 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 Santiago to London in December from $928

Return flights