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

Return flights

03 Dec - 08 Dec	Vueling Airlines
06 Dec - 27 Jan	Norse Atlantic Airways (UK)
06 Dec - 10 Dec	Vueling Airlines
06 Dec - 14 Dec	Finnair
06 Dec - 12 Dec	Finnair
04 Dec - 07 Dec	Finnair
04 Dec - 09 Dec	Finnair
03 Dec - 13 Dec	Finnair
04 Dec - 14 Dec	Finnair
01 Dec - 08 Dec	easyJet
29 Dec - 19 Jan	LATAM Airlines Group
02 Dec - 13 Dec	Vueling Airlines
05 Dec - 17 Jan	Norse Atlantic Airways (UK)
25 Dec - 19 Jan	LATAM Airlines Group
30 Dec - 25 Jan	easyJet
05 Dec - 30 Jan	Vueling Airlines
31 Dec - 22 Jan	Iberia Express
31 Dec - 23 Jan	Iberia Express
08 Dec - 12 Jan	Tunisair
29 Dec - 12 Jan	easyJet

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 895€

Return flights