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

Return flights

22 Oct - 29 Oct	Avianca
21 Oct - 29 Oct	Avianca
06 Oct - 20 Oct	Air France
06 Oct - 13 Oct	Air France
06 Oct - 05 Nov	Air France
06 Oct - 10 Nov	Air France
30 Oct - 17 Nov	Air Canada
20 Oct - 23 Oct	Avianca
08 Oct - 29 Oct	Avianca
23 Oct - 29 Oct	Avianca
08 Oct - 14 Oct	TAP
27 Oct - 17 Nov	Lufthansa
26 Oct - 09 Nov	Air Canada
03 Oct - 02 Nov	Air Canada
02 Oct - 23 Oct	Finnair
05 Oct - 09 Oct	Finnair
22 Oct - 02 Nov	Finnair
24 Oct - 10 Nov	Air Canada
22 Oct - 22 Nov	Finnair
20 Oct - 09 Nov	Air Canada

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 836€

Return flights