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

Return flights

21 Sep - 30 Sep	Avianca
29 Sep - 08 Oct	Avianca
30 Sep - 07 Oct	LATAM Airlines Group
26 Sep - 04 Oct	LATAM Airlines Group
30 Sep - 01 Oct	Avianca
23 Sep - 02 Oct	LATAM Airlines Group
26 Sep - 05 Oct	Avianca	direct
26 Sep - 04 Oct	Avianca	direct
17 Sep - 02 Oct	Avianca	direct
21 Sep - 28 Sep	Avianca	direct
19 Sep - 28 Sep	Avianca	direct
21 Sep - 22 Sep	Copa
18 Sep - 25 Sep	Avianca
19 Sep - 26 Sep	Avianca
21 Sep - 29 Sep	Avianca
16 Sep - 02 Oct	LATAM Airlines Group
18 Sep - 28 Sep	Copa

Also check the deals for one-way flights from Buenos Aires to Quito 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 Quito in September from 484€

Return flights