Cheapest return flights from London to Buenos Aires in September from $1380

Best time to book flights for London (LCY) to Buenos Aires (EZE) flights at AirHint

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

Return flights

24 Sep - 15 Oct KLM
01 Sep - 09 Oct KLM
19 Sep - 05 Oct KLM
26 Sep - 11 Oct KLM
16 Sep - 25 Sep ITA Airways
09 Sep - 23 Sep ITA Airways
15 Sep - 30 Sep KLM
14 Sep - 30 Sep KLM
05 Sep - 21 Sep KLM
10 Sep - 28 Sep KLM
09 Sep - 22 Sep ITA Airways
06 Sep - 21 Sep KLM
05 Sep - 18 Sep KLM
05 Sep - 22 Sep KLM
25 Sep - 10 Oct KLM

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

Skyscanner

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