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

Return flights

08 Oct - 27 Oct	easyJet
14 Oct - 20 Oct	easyJet
25 Oct - 04 Nov	Ryanair
08 Oct - 14 Oct	easyJet
08 Oct - 29 Nov	easyJet
17 Oct - 30 Oct	easyJet
12 Oct - 25 Oct	easyJet
08 Oct - 22 Oct	easyJet
17 Oct - 01 Nov	easyJet
23 Oct - 01 Nov	easyJet
07 Oct - 20 Oct	easyJet
20 Oct - 14 Nov	easyJet
02 Oct - 16 Oct	easyJet
09 Oct - 31 Oct	Ryanair
02 Oct - 25 Oct	easyJet

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 $1139

Return flights