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

Return flights

02 Dec - 24 Jan	LATAM Airlines Group
01 Dec - 23 Jan	Air Canada
01 Dec - 24 Jan	Air Canada
11 Dec - 26 Jan	Air Canada
17 Dec - 31 Dec	Air Canada
17 Dec - 17 Jan	Air Canada
14 Dec - 31 Dec	LATAM Airlines Group
14 Dec - 14 Jan	LATAM Airlines Group
08 Dec - 06 Jan	Air Canada
02 Dec - 23 Dec	Iberia
25 Dec - 08 Jan	Air Canada
25 Dec - 17 Jan	Air Canada
16 Dec - 16 Jan	Air Canada
05 Dec - 12 Dec	LATAM Airlines Group
05 Dec - 06 Dec	Avianca
17 Dec - 26 Dec	Air Canada
24 Dec - 31 Dec	Avianca
04 Dec - 12 Dec	LATAM Airlines Group
02 Dec - 14 Dec	United
21 Dec - 28 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 694€

Return flights