Cheapest return flights from Montreal (YUL) to Boston (BOS), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
15 Aug 23 Aug Porter Airlines (Canada) Ltd
Direct Flight
26 Aug 02 Sep Porter Airlines (Canada) Ltd
25 Aug 01 Sep Porter Airlines (Canada) Ltd
Direct Flight
27 Aug 03 Sep Porter Airlines (Canada) Ltd
Direct Flight
13 Aug 16 Aug Porter Airlines (Canada) Ltd
07 Aug 09 Aug Porter Airlines (Canada) Ltd
Direct Flight
10 Aug 17 Aug Porter Airlines (Canada) Ltd
Direct Flight
11 Aug 18 Aug Porter Airlines (Canada) Ltd
Direct Flight
12 Aug 19 Aug Porter Airlines (Canada) Ltd
Direct Flight
13 Aug 20 Aug Porter Airlines (Canada) Ltd
Direct Flight
15 Aug 22 Aug Porter Airlines (Canada) Ltd
Direct Flight
17 Aug 24 Aug Porter Airlines (Canada) Ltd
Direct Flight
18 Aug 25 Aug Porter Airlines (Canada) Ltd
Direct Flight
28 Aug 04 Sep Porter Airlines (Canada) Ltd
Direct Flight
29 Aug 05 Sep Porter Airlines (Canada) Ltd
Direct Flight
31 Aug 07 Sep Porter Airlines (Canada) Ltd
Direct Flight
30 Aug 06 Sep Porter Airlines (Canada) Ltd
Direct Flight
17 Aug 01 Sep Porter Airlines (Canada) Ltd
17 Aug 02 Sep Porter Airlines (Canada) Ltd
17 Aug 03 Sep Porter Airlines (Canada) Ltd
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deals for one-way flights from Montreal to Boston in August.

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Updated Jul 12, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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