AirHint found the following cheapest return flights from Buenos Aires (EZE) to London (LHR) in September 2026 (see full year).

Return flights

29 Sep - 31 Oct	United
30 Sep - 20 Oct	United
25 Sep - 13 Oct	United
25 Sep - 07 Oct	United
25 Sep - 05 Oct	United
08 Sep - 28 Sep	Plus Ultra Lineas Aereas
27 Sep - 12 Oct	United
29 Sep - 19 Oct	United
24 Sep - 15 Oct	Avianca
26 Sep - 06 Oct	United
26 Sep - 07 Oct	United
01 Sep - 30 Sep	Plus Ultra Lineas Aereas
09 Sep - 23 Sep	United
13 Sep - 28 Sep	Plus Ultra Lineas Aereas
10 Sep - 25 Sep	Plus Ultra Lineas Aereas
04 Sep - 18 Sep	Avianca
12 Sep - 26 Sep	Plus Ultra Lineas Aereas
08 Sep - 26 Sep	Plus Ultra Lineas Aereas
10 Sep - 20 Sep	Plus Ultra Lineas Aereas
16 Sep - 27 Sep	Turkish Airlines

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 924€

Return flights