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

Return flights

28 Sep - 13 Oct	Norse Atlantic Airways (UK)
16 Sep - 29 Sep	Turkish Airlines
30 Sep - 12 Oct	Turkish Airlines
14 Sep - 27 Sep	Turkish Airlines
14 Sep - 25 Sep	Turkish Airlines
19 Sep - 04 Oct	Turkish Airlines
09 Sep - 22 Oct	LEVEL
01 Sep - 10 Sep	Air France
26 Sep - 10 Oct	Turkish Airlines
09 Sep - 23 Sep	Air Europa
01 Sep - 15 Sep	Air France
07 Sep - 18 Sep	Air Europa
01 Sep - 17 Sep	Air France
07 Sep - 21 Sep	Air Europa
07 Sep - 17 Sep	easyJet
12 Sep - 04 Oct	Air France
17 Sep - 06 Oct	Air Europa

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

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.

Book a cheap hotel in Santiago

Cheap car rent in Santiago

Cheapest return flights from London to Santiago in September from 893€

Return flights