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

Return flights

04 Dec - 12 Dec	Avianca
02 Dec - 09 Dec	Avianca
01 Dec - 08 Dec	Avianca
05 Dec - 13 Dec	LATAM Airlines Group
09 Dec - 16 Dec	LATAM Airlines Group
08 Dec - 12 Dec	Avianca
01 Dec - 16 Dec	LATAM Airlines Group
14 Dec - 24 Jan	Avianca
01 Dec - 05 Jan	LATAM Airlines Group
15 Dec - 25 Jan	Avianca
04 Dec - 13 Dec	Avianca
08 Dec - 14 Dec	LATAM Airlines Group
14 Dec - 30 Dec	LATAM Airlines Group
20 Dec - 01 Jan	LATAM Airlines Group
25 Dec - 03 Jan	LATAM Airlines Group
01 Dec - 05 Jan	Avianca	direct
20 Dec - 02 Jan	Avianca
27 Dec - 03 Jan	Avianca
26 Dec - 05 Jan	Avianca
26 Dec - 05 Jan	Avianca	direct

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 429€

Return flights