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

Return flights

03 Dec - 08 Dec	Iberia For Level
04 Dec - 11 Dec	Iberia For Level
03 Dec - 09 Dec	Vueling Airlines
04 Dec - 12 Dec	Iberia For Level
01 Dec - 12 Dec	Iberia For Level
02 Dec - 09 Dec	LATAM Airlines Group
05 Dec - 12 Dec	Iberia For Level
04 Dec - 07 Dec	Iberia
08 Dec - 29 Dec	Air Canada
08 Dec - 14 Jan	Air Canada
06 Dec - 21 Jan	British Airways
11 Dec - 23 Dec	Iberia For Level
24 Dec - 15 Jan	Delta
25 Dec - 20 Jan	Delta
04 Dec - 18 Jan	Delta
09 Dec - 06 Jan	Air Canada
10 Dec - 16 Jan	Iberia For Level
24 Dec - 23 Jan	Delta
31 Dec - 12 Jan	Air Canada
23 Dec - 18 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.

Book a cheap hotel in Santiago

Cheap car rent in Santiago

Cheapest return flights from London to Santiago in December from $1029

Return flights