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

Return flights

31 Oct - 09 Nov	ITA Airways
16 Oct - 20 Oct	ITA Airways
14 Oct - 20 Oct	ITA Airways
07 Oct - 29 Oct	SWISS
31 Oct - 30 Nov	Delta
14 Oct - 19 Oct	ITA Airways
21 Oct - 19 Nov	SWISS
21 Oct - 05 Nov	SWISS
15 Oct - 03 Nov	Lufthansa
17 Oct - 20 Oct	ITA Airways
01 Oct - 22 Oct	ITA Airways
17 Oct - 24 Oct	ITA Airways
05 Oct - 10 Oct	ITA Airways
09 Oct - 19 Oct	Delta
13 Oct - 19 Oct	Delta
31 Oct - 14 Nov	ITA Airways
29 Oct - 08 Nov	Air Dolomiti
31 Oct - 04 Nov	Lufthansa
01 Oct - 17 Nov	Lufthansa
27 Oct - 03 Nov	Lufthansa

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 $1269

Return flights