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

Return flights

31 Aug - 26 Sep	Jet2
29 Aug - 12 Sep	Ryanair
21 Aug - 07 Sep	Ryanair
29 Aug - 02 Sep	Ryanair
29 Aug - 18 Sep	Ryanair
30 Aug - 07 Sep	Ryanair
25 Aug - 02 Sep	Ryanair
25 Aug - 13 Sep	Ryanair
21 Aug - 12 Sep	Ryanair
23 Aug - 06 Sep	Ryanair
26 Aug - 29 Aug	Ryanair
25 Aug - 29 Aug	Ryanair
27 Aug - 31 Aug	Ryanair
26 Aug - 30 Aug	Ryanair
27 Aug - 30 Aug	Ryanair
22 Aug - 31 Aug	Ryanair
24 Aug - 31 Aug	Ryanair
22 Aug - 30 Aug	Ryanair
22 Aug - 24 Aug	Ryanair
27 Aug - 28 Aug	Ryanair

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 $1317

Return flights