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

Return flights

31 Aug - 30 Sep	Avianca
27 Aug - 15 Sep	Air Canada
25 Aug - 30 Sep	Avianca
30 Aug - 21 Sep	Delta
22 Aug - 24 Sep	Delta
20 Aug - 24 Sep	Delta
20 Aug - 25 Sep	Delta
24 Aug - 01 Sep	Delta
24 Aug - 07 Sep	Delta
25 Aug - 31 Aug	Delta
21 Aug - 31 Aug	Delta
30 Aug - 20 Sep	Delta
20 Aug - 31 Aug	Delta
21 Aug - 29 Aug	Delta
28 Aug - 31 Aug	Delta
23 Aug - 27 Aug	Delta
17 Aug - 30 Aug	Delta
21 Aug - 28 Aug	Delta
20 Aug - 30 Aug	Delta
21 Aug - 30 Aug	Delta

Also check the deals for one-way flights from London to Buenos Aires 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 Buenos Aires in August from $1167

Return flights