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

Return flights

07 Oct - 14 Oct	Ryanair
29 Oct - 04 Nov	Ryanair
09 Oct - 14 Oct	Ryanair
29 Oct - 11 Nov	Ryanair
28 Oct - 03 Nov	Ryanair
06 Oct - 19 Oct	Ryanair
01 Oct - 06 Oct	Ryanair
23 Oct - 26 Oct	Ryanair
05 Oct - 19 Oct	Ryanair
11 Oct - 18 Oct	Ryanair
31 Oct - 14 Nov	Ryanair
02 Oct - 05 Oct	Ryanair
03 Oct - 11 Oct	Ryanair
03 Oct - 02 Nov	Ryanair
20 Oct - 25 Oct	Ryanair
17 Oct - 02 Nov	Ryanair
26 Oct - 09 Nov	Ryanair

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from London to Buenos Aires in October from 865€

Return flights