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

Return flights

02 Dec - 07 Dec	ITA Airways
04 Dec - 30 Dec	Delta
05 Dec - 30 Dec	Delta
03 Dec - 07 Dec	British Airways
09 Dec - 17 Jan	Delta
05 Dec - 09 Dec	ITA Airways
05 Dec - 29 Dec	Delta
31 Dec - 22 Jan	Iberia
03 Dec - 10 Dec	Iberia
03 Dec - 12 Dec	Iberia
08 Dec - 30 Dec	Delta
10 Dec - 29 Dec	Delta
04 Dec - 28 Jan	Iberia
31 Dec - 20 Jan	Iberia
04 Dec - 29 Jan	Iberia
30 Dec - 25 Jan	Delta
05 Dec - 11 Jan	Delta
11 Dec - 17 Jan	Delta
08 Dec - 28 Jan	KLM
31 Dec - 10 Jan	Delta

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 1060€

Return flights