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

Return flights

03 Dec - 12 Dec	Iberia For Level
01 Dec - 15 Dec	Iberia For Level
06 Dec - 08 Dec	Norse Atlantic Airways (UK)
03 Dec - 05 Dec	Vueling Airlines
01 Dec - 12 Dec	Iberia For Level
05 Dec - 15 Dec	Iberia For Level
04 Dec - 18 Dec	Iberia For Level
01 Dec - 30 Dec	Air Canada
02 Dec - 30 Dec	Air Canada
02 Dec - 16 Dec	Air Canada
08 Dec - 14 Jan	Air Canada
31 Dec - 28 Jan	Delta
10 Dec - 16 Jan	Delta
30 Dec - 25 Jan	Delta
24 Dec - 14 Jan	Air Canada
24 Dec - 17 Jan	Delta
01 Dec - 17 Jan	Delta
27 Dec - 23 Jan	Ryanair
29 Dec - 16 Jan	Delta
27 Dec - 12 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 $974

Return flights