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

Return flights

31 Oct - 22 Nov	SWISS
31 Oct - 08 Nov	SWISS
03 Oct - 25 Oct	SWISS
17 Oct - 25 Oct	SWISS
01 Oct - 08 Oct	Delta
08 Oct - 18 Oct	ITA Airways
23 Oct - 01 Nov	SWISS
12 Oct - 28 Oct	Delta
06 Oct - 13 Oct	Delta
06 Oct - 20 Oct	Delta
03 Oct - 18 Oct	Delta
17 Oct - 01 Nov	SWISS
29 Oct - 16 Nov	KLM
12 Oct - 23 Oct	Delta
09 Oct - 23 Oct	KLM
30 Oct - 17 Nov	ITA Airways
24 Oct - 09 Nov	ITA Airways
30 Oct - 06 Nov	ITA Airways
30 Oct - 16 Nov	ITA Airways
18 Oct - 01 Nov	ITA Airways

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 $1385

Return flights