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

Return flights

14 Oct - 20 Oct	ITA Airways
27 Oct - 19 Nov	Delta
31 Oct - 15 Nov	Delta
02 Oct - 16 Oct	ITA Airways
09 Oct - 26 Oct	ITA Airways
06 Oct - 22 Oct	ITA Airways
07 Oct - 22 Oct	SWISS
03 Oct - 20 Oct	KLM
28 Oct - 26 Nov	SWISS
28 Oct - 08 Nov	SWISS
21 Oct - 08 Nov	SWISS
21 Oct - 01 Nov	SWISS
29 Oct - 12 Nov	Lufthansa
29 Oct - 08 Nov	Lufthansa
15 Oct - 21 Oct	ITA Airways
01 Oct - 31 Oct	ITA Airways
20 Oct - 01 Nov	KLM
16 Oct - 02 Nov	ITA Airways
08 Oct - 20 Oct	Lufthansa
21 Oct - 28 Oct	SWISS

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 1078€

Return flights