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

Return flights

27 Oct - 10 Nov	Lufthansa
27 Oct - 04 Nov	Lufthansa
20 Oct - 03 Nov	Avianca
20 Oct - 28 Oct	Avianca
22 Oct - 05 Nov	Avianca
29 Oct - 05 Nov	Avianca
29 Oct - 02 Nov	Avianca
21 Oct - 28 Oct	Avianca
22 Oct - 27 Oct	Avianca
15 Oct - 26 Oct	Avianca
22 Oct - 31 Oct	Avianca
27 Oct - 31 Oct	Avianca
21 Oct - 06 Nov	Avianca
08 Oct - 14 Nov	Avianca
29 Oct - 12 Nov	Avianca
28 Oct - 17 Nov	Avianca
13 Oct - 27 Oct	Avianca
07 Oct - 28 Oct	Avianca
08 Oct - 15 Oct	Avianca
08 Oct - 17 Oct	Avianca

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 834€

Return flights