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

Return flights

17 Aug - 04 Sep	easyJet
18 Aug - 31 Aug	Norse Atlantic Airways (UK)
03 Aug - 10 Aug	Vueling Airlines
19 Aug - 02 Sep	Vueling Airlines
27 Aug - 03 Sep	Vueling Airlines
27 Aug - 07 Sep	Vueling Airlines
28 Aug - 07 Sep	Vueling Airlines
29 Aug - 10 Sep	Vueling Airlines
19 Aug - 01 Sep	Vueling Airlines
19 Aug - 29 Aug	Vueling Airlines
11 Aug - 16 Aug	Vueling Airlines
11 Aug - 19 Aug	Vueling Airlines
29 Aug - 06 Sep	Vueling Airlines
11 Aug - 25 Aug	Vueling Airlines
15 Aug - 20 Aug	Vueling Airlines
22 Aug - 31 Aug	Vueling Airlines
16 Aug - 16 Sep	Vueling Airlines
23 Aug - 31 Aug	Vueling Airlines
22 Aug - 30 Aug	Air Europa

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 $1358

Return flights