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

Return flights

07 Sep - 14 Sep	WestJet
21 Sep - 28 Sep	WestJet
28 Sep - 05 Oct	WestJet
16 Sep - 23 Sep	Copa
17 Sep - 24 Sep	WestJet
20 Sep - 27 Sep	Porter Airlines (Canada) Ltd
23 Sep - 30 Sep	Copa
24 Sep - 01 Oct	WestJet
18 Sep - 25 Sep	Copa
25 Sep - 02 Oct	Copa
11 Sep - 18 Sep	Copa
27 Sep - 04 Oct	Porter Airlines (Canada) Ltd
29 Sep - 06 Oct	Porter Airlines (Canada) Ltd
10 Sep - 17 Sep	WestJet
09 Sep - 16 Sep	Copa
30 Sep - 07 Oct	Copa
26 Sep - 03 Oct	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal to Antigua 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 Antigua in September from $461

Return flights