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

Return flights

23 Sep - 30 Sep	Copa
26 Sep - 03 Oct	Copa
30 Sep - 07 Oct	Copa
16 Sep - 23 Sep	Copa
19 Sep - 26 Sep	Copa
12 Sep - 19 Sep	Copa
09 Sep - 16 Sep	Copa
25 Sep - 30 Sep	Porter Airlines (Canada) Ltd
05 Sep - 12 Sep	Copa
07 Sep - 20 Sep	Delta
20 Sep - 28 Sep	Delta
08 Sep - 15 Sep	Porter Airlines (Canada) Ltd
29 Sep - 06 Oct	Porter Airlines (Canada) Ltd
28 Sep - 05 Oct	Porter Airlines (Canada) Ltd
25 Sep - 02 Oct	Air Transat
24 Sep - 01 Oct	Air Transat
27 Sep - 04 Oct	Air Transat

Also check the deals for one-way flights from Montreal to Belize 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 Belize City in September from $423

Return flights