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

Return flights

18 Oct - 26 Oct	Ryanair
10 Oct - 19 Oct	easyJet
09 Oct - 25 Oct	Ryanair
06 Oct - 20 Oct	easyJet
10 Oct - 17 Oct	easyJet
11 Oct - 25 Oct	easyJet
10 Oct - 18 Oct	easyJet
04 Oct - 04 Nov	easyJet
15 Oct - 26 Oct	easyJet
07 Oct - 04 Nov	Ryanair
31 Oct - 04 Nov	easyJet
20 Oct - 26 Oct	easyJet
23 Oct - 02 Nov	easyJet
20 Oct - 24 Oct	easyJet
31 Oct - 29 Nov	easyJet
30 Oct - 29 Nov	easyJet
22 Oct - 02 Nov	easyJet
30 Oct - 02 Nov	easyJet
26 Oct - 01 Nov	easyJet
24 Oct - 02 Nov	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 1058€

Return flights