AirHint found the following cheapest return flights from Buenos Aires (EZE) to London (LHR) in September 2025 (see full year).

Return flights

24 Sep - 07 Oct	Copa
29 Sep - 06 Oct	Copa
22 Sep - 30 Sep	LATAM Airlines Group
24 Sep - 01 Oct	LATAM Airlines Group
29 Sep - 12 Oct	Avianca
30 Sep - 13 Oct	Ethiopian Airlines
28 Sep - 13 Oct	Aerolineas Argentinas
29 Sep - 13 Oct	Ethiopian Airlines
27 Sep - 13 Oct	Ethiopian Airlines
27 Sep - 12 Oct	Turkish Airlines
26 Sep - 09 Oct	Avianca
19 Sep - 30 Sep	LATAM Airlines Group
20 Sep - 28 Sep	Ethiopian Airlines
28 Sep - 30 Sep	Aerolineas Argentinas
19 Sep - 27 Sep	Flybondi
18 Sep - 25 Sep	LATAM Airlines Group
18 Sep - 24 Sep	Avianca
18 Sep - 27 Sep	Air Canada
17 Sep - 22 Sep	Avianca
25 Sep - 28 Sep	Avianca

Also check the deals for one-way flights from Buenos Aires to London in September.

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 Buenos Aires to London in September from 1109€

Return flights