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

Return flights

01 Oct - 07 Oct	Ryanair
02 Oct - 05 Oct	Ryanair
02 Oct - 14 Oct	Ryanair
14 Oct - 21 Oct	Ryanair
31 Oct - 14 Nov	Ryanair
02 Oct - 18 Oct	Ryanair
22 Oct - 04 Nov	Ryanair
09 Oct - 26 Oct	Ryanair
09 Oct - 20 Oct	Ryanair
11 Oct - 14 Nov	Ryanair
14 Oct - 03 Nov	Ryanair
01 Oct - 16 Oct	Ryanair
11 Oct - 25 Oct	Ryanair
20 Oct - 25 Oct	Ryanair
31 Oct - 15 Nov	Ryanair
30 Oct - 15 Nov	Jet2
22 Oct - 20 Nov	Ryanair
24 Oct - 05 Nov	Ryanair
24 Oct - 02 Nov	Ryanair
31 Oct - 20 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 976€

Return flights