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

Return flights

02 Dec - 09 Dec	Avianca
01 Dec - 08 Dec	Avianca
03 Dec - 06 Dec	Avianca
11 Dec - 18 Dec	Avianca
12 Dec - 19 Dec	Avianca
14 Dec - 21 Dec	Avianca
08 Dec - 15 Dec	Avianca
01 Dec - 16 Dec	Avianca
17 Dec - 24 Dec	Avianca
19 Dec - 22 Dec	Avianca
30 Dec - 03 Jan	Avianca
26 Dec - 13 Jan	Avianca	direct
22 Dec - 03 Jan	Avianca	direct
21 Dec - 03 Jan	Avianca	direct
22 Dec - 02 Jan	Avianca	direct
21 Dec - 06 Jan	Avianca	direct
25 Dec - 03 Jan	Avianca
28 Dec - 03 Jan	Avianca
31 Dec - 03 Jan	Avianca
20 Dec - 03 Jan	Avianca

Also check the deals for one-way flights from Quito to Buenos Aires in December.

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 Quito to Buenos Aires in December from 412€

Return flights