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

Return flights

07 Aug - 26 Aug	Avianca
06 Aug - 22 Aug	Avianca
05 Aug - 28 Aug	Avianca
04 Aug - 14 Aug	Air France
08 Aug - 18 Aug	KLM
13 Aug - 01 Sep	KLM
05 Aug - 21 Aug	Avianca
05 Aug - 18 Aug	KLM
10 Aug - 23 Aug	Air France
08 Aug - 23 Aug	Air France
10 Aug - 17 Aug	Air France
18 Aug - 03 Sep	Air France
10 Aug - 30 Sep	Avianca
17 Aug - 03 Sep	Air France
17 Aug - 02 Sep	Air France
18 Aug - 02 Sep	LATAM Airlines Group
12 Aug - 04 Sep	Avianca
02 Aug - 17 Sep	Avianca
08 Aug - 06 Sep	Avianca
12 Aug - 30 Sep	Avianca

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 715€

Return flights