AirHint found the following cheapest return flights from London (LCY) to Santiago (SCL) in April 2026 (see full year).

Return flights

13 Apr - 23 Apr	KLM
20 Apr - 08 May	KLM
01 Apr - 08 Apr	Delta
06 Apr - 12 Apr	Delta
02 Apr - 09 Apr	Delta
17 Apr - 24 Apr	British Airways
01 Apr - 24 Apr	British Airways
17 Apr - 25 Apr	Aer Lingus
13 Apr - 20 Apr	KLM
02 Apr - 18 Apr	Delta
23 Apr - 03 May	British Airways
23 Apr - 12 May	British Airways
01 Apr - 11 Apr	Delta
18 Apr - 02 May	KLM
30 Apr - 12 May	British Airways
23 Apr - 02 May	KLM
28 Apr - 10 May	British Airways
30 Apr - 16 May	KLM
23 Apr - 01 May	British Airways
25 Apr - 01 May	KLM

Also check the deals for one-way flights from London to Santiago in April.

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 April from $1365

Return flights