A Massachusetts-based airline is now providing Essential Air Service flights in Montana. Cape Air is serving five Montana cities,flying between Billings and Glendive, Glasgow, Sidney, Havre and Wolf Point. Cape Air flights on its nine-passenger planes are $49 each way including all taxes and fees. The planes can carry 1,600 pounds of weight, so ticket agents have to ask passengers how much they weigh. Passengers could even end up sitting next to the pilot. Here’s what it might look like.