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

Return flights

05 Dec - 10 Dec	Avianca
10 Dec - 17 Dec	Avianca
10 Dec - 15 Jan	Copa
09 Dec - 16 Dec	United
11 Dec - 14 Dec	Copa
10 Dec - 15 Jan	LATAM Airlines Group	direct
10 Dec - 17 Dec	Delta	direct
09 Dec - 16 Dec	Delta	direct
11 Dec - 14 Jan	LATAM Airlines Group	direct
27 Dec - 09 Jan	Copa
25 Dec - 10 Jan	Copa
17 Dec - 06 Jan	Copa
26 Dec - 09 Jan	Avianca
27 Dec - 07 Jan	Copa
05 Dec - 10 Dec	LATAM Airlines Group	direct
19 Dec - 25 Dec	Frontier Airlines
20 Dec - 14 Jan	Avianca
22 Dec - 12 Jan	Frontier Airlines

Also check the deals for one-way flights from Miami to Quito 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 Miami to Quito in December from $388

Return flights