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

Return flights

02 Dec - 09 Dec	Avianca
04 Dec - 11 Dec	Avianca
06 Dec - 13 Dec	Avianca
03 Dec - 10 Dec	LATAM Airlines Group
05 Dec - 12 Dec	Avianca
09 Dec - 16 Dec	LATAM Airlines Group
10 Dec - 17 Dec	LATAM Airlines Group
01 Dec - 08 Dec	Avianca
08 Dec - 15 Dec	Avianca
09 Dec - 21 Dec	LATAM Airlines Group
15 Dec - 07 Jan	LATAM Airlines Group
30 Dec - 06 Jan	LATAM Airlines Group
16 Dec - 09 Jan	Delta
31 Dec - 07 Jan	Avianca
29 Dec - 05 Jan	LATAM Airlines Group
25 Dec - 01 Jan	Avianca
28 Dec - 04 Jan	LATAM Airlines Group
26 Dec - 02 Jan	LATAM Airlines Group
27 Dec - 03 Jan	Air Canada
28 Dec - 03 Jan	Copa

Also check the deals for one-way flights from Montreal 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 Montreal to Quito in December from 398€

Return flights