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

Return flights

07 Oct - 23 Oct	Ryanair
31 Oct - 17 Nov	Ryanair
21 Oct - 03 Nov	Ryanair
08 Oct - 16 Oct	easyJet
18 Oct - 25 Oct	Ryanair
21 Oct - 13 Nov	Ryanair
18 Oct - 30 Nov	Ryanair
01 Oct - 05 Nov	Ryanair
18 Oct - 29 Oct	Ryanair
02 Oct - 08 Oct	easyJet
04 Oct - 26 Oct	LATAM Airlines Group
07 Oct - 25 Oct	LATAM Airlines Group
15 Oct - 26 Oct	LATAM Airlines Group
31 Oct - 29 Nov	LATAM Airlines Group
01 Oct - 15 Oct	LATAM Airlines Group
05 Oct - 14 Oct	LATAM Airlines Group
27 Oct - 02 Nov	LATAM Airlines Group
30 Oct - 19 Nov	LATAM Airlines Group
30 Oct - 18 Nov	LATAM Airlines Group
30 Oct - 15 Nov	LATAM Airlines Group

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 $1085

Return flights