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

Return flights

18 Aug - 25 Aug	KLM
31 Aug - 16 Sep	KLM
19 Aug - 26 Aug	KLM
20 Aug - 08 Sep	KLM
25 Aug - 27 Sep	Delta
28 Aug - 06 Sep	Delta
25 Aug - 30 Aug	Delta
19 Aug - 09 Sep	KLM
18 Aug - 26 Sep	KLM
19 Aug - 07 Sep	KLM
20 Aug - 27 Aug	KLM
19 Aug - 08 Sep	KLM
21 Aug - 08 Sep	KLM
19 Aug - 11 Sep	KLM
23 Aug - 27 Aug	KLM
18 Aug - 21 Aug	Delta
18 Aug - 31 Aug	KLM
19 Aug - 27 Aug	KLM
21 Aug - 27 Aug	Delta
25 Aug - 27 Aug	Delta

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

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 August from 1054€

Return flights