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

Return flights

29 Sep - 12 Oct	Air Canada
22 Sep - 08 Oct	Air Canada
25 Sep - 10 Oct	Air Canada
08 Sep - 14 Sep	LATAM Airlines Group
11 Sep - 23 Sep	Air Canada
20 Sep - 30 Sep	Air Canada
01 Sep - 16 Oct	Finnair
18 Sep - 22 Oct	Air Canada
27 Sep - 07 Oct	Air Canada
20 Sep - 03 Oct	Air Canada
13 Sep - 01 Oct	Air Canada
18 Sep - 07 Oct	Air Canada
18 Sep - 01 Oct	Air Canada
09 Sep - 27 Sep	Finnair
03 Sep - 24 Sep	Copa
03 Sep - 23 Sep	American Airlines
11 Sep - 24 Sep	Iberia For Level
04 Sep - 16 Sep	Air Canada
01 Sep - 23 Sep	American Airlines
14 Sep - 29 Sep	Iberia For Level

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 983€

Return flights