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

Return flights

24 Oct - 31 Oct	TAP
01 Oct - 12 Oct	TAP
04 Oct - 12 Oct	Norse Atlantic Airways (UK)
06 Oct - 12 Oct	Norse Atlantic Airways (UK)
24 Oct - 16 Nov	TAP
21 Oct - 29 Oct	TAP
24 Oct - 10 Nov	TAP
20 Oct - 29 Oct	TAP
31 Oct - 11 Nov	TAP
06 Oct - 20 Oct	Norse Atlantic Airways (UK)
11 Oct - 25 Oct	TAP
04 Oct - 18 Oct	Norse Atlantic Airways (UK)
03 Oct - 13 Oct	TAP
14 Oct - 25 Nov	TAP
14 Oct - 26 Nov	TAP
03 Oct - 02 Nov	TAP
23 Oct - 01 Nov	TAP
27 Oct - 09 Nov	TAP
22 Oct - 01 Nov	TAP
22 Oct - 02 Nov	TAP

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