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

Return flights

07 Dec - 10 Dec	JetSmart
26 Dec - 11 Jan	JetSmart
19 Dec - 28 Jan	JetSmart
24 Dec - 11 Jan	JetSmart
21 Dec - 11 Jan	JetSmart
17 Dec - 28 Jan	JetSmart
31 Dec - 11 Jan	JetSmart
09 Dec - 16 Dec	Avianca
26 Dec - 14 Jan	JetSmart
24 Dec - 14 Jan	JetSmart
10 Dec - 17 Dec	JetSmart
21 Dec - 18 Jan	JetSmart
31 Dec - 21 Jan	JetSmart
10 Dec - 15 Dec	JetSmart
10 Dec - 12 Dec	JetSmart
12 Dec - 17 Dec	JetSmart
07 Dec - 28 Dec	JetSmart
19 Dec - 31 Dec	JetSmart
07 Dec - 16 Dec	JetSmart
07 Dec - 12 Dec	JetSmart

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 456€

Return flights