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

Return flights

13 Sep - 20 Sep	United
27 Sep - 04 Oct	United
02 Sep - 09 Sep	Copa
18 Sep - 25 Sep	Air Transat
11 Sep - 18 Sep	Air Transat
25 Sep - 02 Oct	Air Transat
01 Sep - 08 Sep	Copa
24 Sep - 01 Oct	Air Transat
04 Sep - 11 Sep	Air Transat
17 Sep - 24 Sep	Copa
08 Sep - 15 Sep	Copa
10 Sep - 17 Sep	Air Transat
26 Sep - 03 Oct	Air Transat
03 Sep - 10 Sep	Copa
28 Sep - 05 Oct	Air Transat

Also check the deals for one-way flights from Montreal to Roatan 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 Roatan in September from $637

Return flights