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

Return flights

21 Oct - 01 Nov	ITA Airways
07 Oct - 15 Oct	SWISS
22 Oct - 01 Nov	ITA Airways
20 Oct - 17 Nov	ITA Airways
08 Oct - 25 Oct	Lufthansa
06 Oct - 20 Oct	Lufthansa
01 Oct - 15 Oct	ITA Airways
02 Oct - 12 Nov	Lufthansa
06 Oct - 12 Oct	Lufthansa
02 Oct - 16 Oct	Lufthansa
02 Oct - 15 Oct	Lufthansa
21 Oct - 02 Nov	ITA Airways
01 Oct - 08 Oct	ITA Airways
10 Oct - 19 Oct	ITA Airways
08 Oct - 16 Oct	Lufthansa
28 Oct - 11 Nov	SWISS
01 Oct - 17 Nov	Lufthansa
23 Oct - 05 Nov	SWISS
20 Oct - 14 Nov	ITA Airways
01 Oct - 28 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 1122€

Return flights