Cheapest return flights from London to Santiago in September from $1297

Best time to book flights for London (LCY) to Santiago (SCL) flights at AirHint

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

Return flights

08 Sep - 07 Oct KLM
19 Sep - 05 Oct KLM
25 Sep - 14 Oct KLM
23 Sep - 01 Oct KLM
27 Sep - 04 Oct KLM
22 Sep - 30 Sep KLM
02 Sep - 09 Sep Delta
15 Sep - 26 Sep KLM
12 Sep - 29 Sep KLM
13 Sep - 30 Sep KLM
06 Sep - 28 Sep KLM
01 Sep - 07 Sep Delta
03 Sep - 19 Sep KLM
01 Sep - 11 Sep KLM
19 Sep - 28 Sep KLM

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

Skyscanner

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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