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

Return flights

22 Dec - 07 Jan	Air Canada
18 Dec - 25 Dec	Air France
21 Dec - 10 Jan	Air Canada
21 Dec - 07 Jan	Air Canada
19 Dec - 31 Dec	KLM
21 Dec - 28 Dec	Sky Airline
25 Dec - 01 Jan	Avianca
23 Dec - 04 Jan	KLM
23 Dec - 05 Jan	KLM
19 Dec - 19 Jan	LATAM Airlines Group
21 Dec - 31 Dec	Air France
26 Dec - 02 Jan	Avianca
18 Dec - 09 Jan	Air France
23 Dec - 03 Jan	KLM
18 Dec - 25 Dec	British Airways	direct
20 Dec - 21 Dec	LATAM Airlines Group
19 Dec - 31 Dec	British Airways	direct
21 Dec - 31 Dec	British Airways	direct

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 943€

Return flights