Private tours
Your own guide, your own pace, priced per group rather than per person on most listings.
Prices run from C$2 to C$1261, and half of the 45 priced listings cost C$250 or less. Most take 2 hours to 3 hours. The best reviewed with at least 100 reviews is Mont Tremblant: Helicopter Tour with Optional Stopover (4.9 from 121 reviews). The most reviewed is Montreal: Private Walking Tour with a Local (430 reviews).
For the operators we researched and recommend, see our food tours and cooking classes in Montreal, or the experiences overview.