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

Return flights

04 Dec - 11 Dec	easyJet
01 Dec - 08 Dec	easyJet
01 Dec - 09 Dec	Ryanair
04 Dec - 14 Dec	easyJet
01 Dec - 05 Dec	Ryanair
01 Dec - 10 Dec	easyJet
01 Dec - 13 Dec	easyJet
04 Dec - 07 Dec	easyJet
10 Dec - 13 Jan	easyJet
05 Dec - 28 Dec	easyJet
08 Dec - 19 Dec	Ryanair
13 Dec - 17 Jan	easyJet
22 Dec - 20 Jan	easyJet
10 Dec - 16 Jan	easyJet
25 Dec - 01 Jan	Wizz Air Malta
25 Dec - 17 Jan	Wizz Air
17 Dec - 16 Jan	easyJet
31 Dec - 11 Jan	easyJet
21 Dec - 02 Jan	easyJet
10 Dec - 02 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 870€

Return flights