AirHint found the following cheapest one-way flights from Santiago (SCL) to London (LHR) in December 2025 (see full year).

One-Way flights

09 Dec	Avianca
03 Dec	United
08 Dec	United
11 Dec	Iberia For Level
16 Dec	Iberia
18 Dec	Sky Airline
09 Dec	British Airways	direct
11 Dec	British Airways	direct
05 Dec	British Airways	direct
18 Dec	British Airways	direct

Also check the deals for return flights from Santiago to London 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 one-way flights from Santiago to London in December from $489

One-Way flights