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

Return flights

04 Dec - 19 Dec	Vueling Airlines
03 Dec - 10 Dec	Vueling Airlines
06 Dec - 13 Dec	Iberia
05 Dec - 19 Dec	Iberia
03 Dec - 26 Dec	Iberia For Level
25 Dec - 13 Jan	LATAM Airlines Group
24 Dec - 27 Jan	easyJet
10 Dec - 18 Dec	Iberia For Level
25 Dec - 15 Jan	LATAM Airlines Group
24 Dec - 12 Jan	LATAM Airlines Group
27 Dec - 16 Jan	LATAM Airlines Group
24 Dec - 13 Jan	LATAM Airlines Group
24 Dec - 14 Jan	LATAM Airlines Group
10 Dec - 29 Dec	Iberia For Level
27 Dec - 18 Jan	LATAM Airlines Group
14 Dec - 30 Jan	TAP
15 Dec - 31 Jan	Air Europa
15 Dec - 30 Dec	Finnair
06 Dec - 31 Dec	Air Europa
07 Dec - 29 Dec	Air Europa

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 947€

Return flights