Cheapest return flights from London to Buenos Aires in August from $1559

Best time to book flights for London (LHR) to Buenos Aires (AEP) flights at AirHint

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

Return flights

26 Aug - 13 Sep Air Canada
26 Aug - 03 Sep Air Canada
18 Aug - 05 Sep British Airways
22 Aug - 25 Aug British Airways
11 Aug - 21 Aug LATAM Airlines Group
20 Aug - 04 Sep LATAM Airlines Group
23 Aug - 07 Sep LATAM Airlines Group
05 Aug - 16 Aug Lufthansa
10 Aug - 17 Aug British Airways
22 Aug - 30 Aug British Airways
14 Aug - 20 Aug British Airways
21 Aug - 30 Aug SWISS
21 Aug - 06 Sep SWISS
09 Aug - 23 Aug LATAM Airlines Group
23 Aug - 06 Sep LATAM Airlines Group
23 Aug - 31 Aug LATAM Airlines Group
23 Aug - 30 Aug LATAM Airlines Group

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

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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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