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

Return flights

28 Oct - 18 Nov	easyJet
29 Oct - 18 Nov	easyJet
01 Oct - 15 Oct	easyJet
08 Oct - 11 Nov	easyJet
10 Oct - 25 Oct	easyJet
13 Oct - 03 Nov	easyJet
31 Oct - 03 Nov	easyJet
28 Oct - 03 Nov	easyJet
13 Oct - 27 Oct	easyJet
01 Oct - 30 Oct	easyJet
20 Oct - 27 Oct	easyJet
31 Oct - 07 Nov	easyJet
06 Oct - 16 Oct	easyJet
15 Oct - 23 Oct	easyJet
24 Oct - 04 Nov	Ryanair
21 Oct - 06 Nov	easyJet
10 Oct - 07 Nov	easyJet
04 Oct - 11 Oct	Wizz Air
03 Oct - 10 Oct	easyJet
10 Oct - 18 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 1051€

Return flights