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

Return flights

10 Oct - 10 Nov	Air Canada
01 Oct - 23 Oct	Air Canada
31 Oct - 15 Nov	American Airlines
08 Oct - 13 Oct	Air Canada
15 Oct - 23 Oct	Air Canada
27 Oct - 17 Nov	United
05 Oct - 18 Oct	LATAM Airlines Group
30 Oct - 09 Nov	Air Canada
10 Oct - 15 Oct	Air Canada
28 Oct - 18 Nov	Delta
29 Oct - 18 Nov	Delta
22 Oct - 06 Nov	Delta
25 Oct - 08 Nov	Delta
26 Oct - 01 Nov	Delta
25 Oct - 02 Nov	Delta
01 Oct - 31 Oct	Air Canada
13 Oct - 23 Oct	Avianca
17 Oct - 31 Oct	Air Canada
16 Oct - 27 Oct	Delta
03 Oct - 19 Oct	Delta

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 $1157

Return flights