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

Return flights

19 Aug - 27 Aug	Air France
19 Aug - 26 Aug	Air France
21 Aug - 28 Aug	Air France
17 Aug - 25 Aug	Air France
20 Aug - 27 Aug	Air France
24 Aug - 31 Aug	Air France
22 Aug - 27 Sep	Iberia
22 Aug - 08 Sep	Avianca
17 Aug - 07 Sep	Avianca
21 Aug - 26 Sep	Avianca
21 Aug - 22 Sep	Avianca
21 Aug - 23 Sep	Avianca
21 Aug - 25 Sep	Avianca
22 Aug - 13 Sep	Iberia
19 Aug - 05 Sep	Avianca
22 Aug - 26 Sep	Avianca
17 Aug - 25 Aug	British Airways	direct

Also check the deals for one-way flights from Santiago to London 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 Santiago to London in August from 752€

Return flights