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

Return flights

30 Aug - 03 Sep	easyJet
26 Aug - 29 Sep	easyJet
27 Aug - 31 Aug	easyJet
21 Aug - 12 Sep	Ryanair
21 Aug - 07 Sep	Ryanair
19 Aug - 29 Aug	easyJet
20 Aug - 03 Sep	easyJet
21 Aug - 28 Aug	Ryanair
29 Aug - 18 Sep	easyJet
20 Aug - 24 Aug	easyJet
19 Aug - 26 Aug	easyJet
18 Aug - 25 Aug	easyJet
16 Aug - 28 Aug	easyJet
28 Aug - 18 Sep	easyJet
20 Aug - 31 Aug	easyJet
22 Aug - 07 Sep	easyJet
24 Aug - 09 Sep	easyJet
17 Aug - 24 Aug	easyJet
20 Aug - 28 Aug	easyJet

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from London to Buenos Aires in August from $1691

Return flights