AirHint found the following cheapest return flights from Montreal (YUL) to Guatemala City (GUA) in September 2026 (see full year).

Return flights

30 Sep - 07 Oct	Copa
01 Sep - 30 Sep	Copa
09 Sep - 16 Sep	Copa
24 Sep - 04 Oct	Copa
15 Sep - 22 Sep	Copa
17 Sep - 24 Sep	Copa
24 Sep - 01 Oct	Copa
02 Sep - 09 Sep	Copa
08 Sep - 15 Sep	Copa
10 Sep - 17 Sep	Copa
03 Sep - 10 Sep	Copa
28 Sep - 05 Oct	Copa
27 Sep - 04 Oct	Copa
01 Sep - 08 Sep	United
06 Sep - 13 Sep	Avianca
25 Sep - 02 Oct	Copa
26 Sep - 03 Oct	Copa

Also check the deals for one-way flights from Montreal to Guatemala City in September.

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 Guatemala City in September from $386

Return flights