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

Return flights

03 Sep - 08 Sep	United
15 Sep - 19 Sep	United
03 Sep - 10 Sep	United
09 Sep - 16 Sep	United
10 Sep - 17 Sep	United
09 Sep - 15 Sep	United
02 Sep - 09 Sep	United
08 Sep - 15 Sep	United
05 Sep - 12 Sep	United
09 Sep - 10 Sep	United
29 Sep - 06 Oct	United
26 Sep - 03 Oct	United
25 Sep - 02 Oct	United
27 Sep - 04 Oct	United
26 Sep - 05 Oct	Avianca

Also check the deals for one-way flights from Montreal to Oranjestad 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 Oranjestad in September from $291

Return flights