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
28 Oct - 12 Nov	easyJet
13 Oct - 27 Oct	easyJet
08 Oct - 29 Nov	easyJet
19 Oct - 04 Nov	easyJet
04 Oct - 25 Oct	Ryanair
20 Oct - 27 Oct	easyJet
25 Oct - 08 Nov	Ryanair
24 Oct - 30 Nov	easyJet
17 Oct - 30 Oct	easyJet
16 Oct - 04 Nov	easyJet
28 Oct - 26 Nov	easyJet
25 Oct - 01 Nov	Ryanair
31 Oct - 15 Nov	easyJet
22 Oct - 08 Nov	easyJet
17 Oct - 27 Oct	easyJet
06 Oct - 16 Oct	easyJet
09 Oct - 13 Oct	easyJet
06 Oct - 22 Oct	easyJet
08 Oct - 20 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 977€

Return flights