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

Return flights

01 Dec - 09 Dec	Ryanair
04 Dec - 28 Jan	Ryanair
05 Dec - 30 Jan	Ryanair
06 Dec - 17 Dec	Ryanair
01 Dec - 12 Dec	Ryanair
04 Dec - 14 Dec	Ryanair
04 Dec - 25 Dec	Ryanair
31 Dec - 22 Jan	Ryanair
05 Dec - 12 Dec	Ryanair
03 Dec - 10 Dec	Ryanair
01 Dec - 10 Dec	Ryanair
25 Dec - 29 Jan	Royal Air Maroc
08 Dec - 28 Jan	Ryanair
05 Dec - 14 Dec	Ryanair
10 Dec - 17 Dec	Ryanair
27 Dec - 31 Jan	Ryanair
11 Dec - 27 Jan	Ryanair
27 Dec - 25 Jan	Ryanair
14 Dec - 31 Jan	Ryanair
30 Dec - 25 Jan	Ryanair

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 $1148

Return flights