AirHint found the following cheapest return flights from Montreal (YUL) to Guatemala City (GUA) in September 2025 (see full year).

Return flights

02 Sep - 09 Sep	Porter Airlines (Canada) Ltd
12 Sep - 03 Oct	Avianca
15 Sep - 03 Oct	Avianca
15 Sep - 06 Oct	Avianca
29 Sep - 06 Oct	Avianca
26 Sep - 03 Oct	Avianca
28 Sep - 05 Oct	Avianca
05 Sep - 12 Sep	Porter Airlines (Canada) Ltd
01 Sep - 08 Sep	Avianca
07 Sep - 14 Sep	Avianca
15 Sep - 22 Sep	Avianca
17 Sep - 24 Sep	Avianca
21 Sep - 28 Sep	Avianca
08 Sep - 15 Sep	Avianca
12 Sep - 19 Sep	Avianca
14 Sep - 21 Sep	Avianca
24 Sep - 01 Oct	Avianca
30 Sep - 07 Oct	Air Canada
25 Sep - 02 Oct	Air Transat
27 Sep - 04 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 351€

Return flights