AirHint found the following cheapest return flights from Montreal (YUL) to Philipsburg (SXM) in August 2025 (see full year).

Return flights

16 Aug - 23 Aug	United
22 Aug - 30 Aug	Delta
21 Aug - 30 Aug	Delta
22 Aug - 31 Aug	United
08 Aug - 15 Aug	United
15 Aug - 23 Aug	United
14 Aug - 28 Aug	Porter Airlines (Canada) Ltd
03 Aug - 10 Aug	Porter Airlines (Canada) Ltd
07 Aug - 14 Aug	Porter Airlines (Canada) Ltd
01 Aug - 08 Aug	Porter Airlines (Canada) Ltd
30 Aug - 06 Sep	United
27 Aug - 03 Sep	Porter Airlines (Canada) Ltd
29 Aug - 05 Sep	Air Transat
31 Aug - 07 Sep	Air Transat
25 Aug - 01 Sep	Avianca

Also check the deals for one-way flights from Montreal to Philipsburg in August.

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 Philipsburg in August from 501€

Return flights