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

Return flights

03 Mar - 10 Mar	Lufthansa
10 Mar - 17 Mar	Lufthansa
12 Mar - 15 Mar	Avianca
12 Mar - 31 Mar	Avianca
21 Mar - 12 Apr	Avianca
12 Mar - 19 Mar	Avianca
04 Mar - 24 Mar	Avianca
01 Mar - 21 Mar	Avianca
02 Mar - 22 Mar	Avianca
05 Mar - 15 Mar	Avianca
04 Mar - 20 Mar	Avianca
14 Mar - 08 Apr	Avianca
20 Mar - 19 Apr	Avianca
19 Mar - 10 Apr	Avianca
14 Mar - 05 Apr	LATAM Airlines Group
11 Mar - 03 Apr	British Airways
28 Mar - 12 Apr	Avianca
27 Mar - 11 Apr	Avianca
28 Mar - 11 Apr	Avianca
27 Mar - 05 Apr	Finnair

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

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 March from 814€

Return flights