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

Return flights

02 Oct - 21 Nov	Jet2
30 Oct - 06 Nov	Ryanair
22 Oct - 07 Nov	Ryanair
20 Oct - 14 Nov	Ryanair
31 Oct - 03 Nov	Ryanair
15 Oct - 29 Oct	Ryanair
23 Oct - 31 Oct	Ryanair
23 Oct - 06 Nov	Ryanair
09 Oct - 17 Oct	Ryanair
09 Oct - 04 Nov	Ryanair
26 Oct - 14 Nov	Ryanair
28 Oct - 04 Nov	Ryanair
29 Oct - 06 Nov	Ryanair
13 Oct - 27 Oct	Ryanair
08 Oct - 17 Oct	Ryanair
09 Oct - 20 Oct	Ryanair
15 Oct - 26 Oct	Ryanair
13 Oct - 17 Oct	Ryanair
09 Oct - 25 Oct	Ryanair
13 Oct - 16 Oct	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 956€

Return flights