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

Return flights

20 Oct - 14 Nov	Ryanair
14 Oct - 27 Oct	Ryanair
13 Oct - 20 Oct	Ryanair
19 Oct - 25 Oct	Ryanair
01 Oct - 14 Oct	Ryanair
31 Oct - 03 Nov	Ryanair
01 Oct - 16 Oct	Ryanair
06 Oct - 19 Oct	Ryanair
01 Oct - 31 Oct	Ryanair
08 Oct - 22 Oct	Ryanair
11 Oct - 25 Oct	Ryanair
04 Oct - 18 Oct	Ryanair
31 Oct - 07 Nov	Ryanair
23 Oct - 06 Nov	Ryanair
28 Oct - 07 Nov	Ryanair
19 Oct - 18 Nov	Ryanair
18 Oct - 18 Nov	Ryanair
19 Oct - 17 Nov	Ryanair
27 Oct - 05 Nov	Ryanair
19 Oct - 05 Nov	Ryanair

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

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 October from $1075

Return flights