Wew have the luxury of flying out of Toronto, Detroit, or Buffalo as they are all roughly equidistant from our home. The last two flights we've booked have been out of Detroit - previously on discount airline Spirit, upcoming on Northwest - both non-stop. We've booked both ourselves online, and for the upcoming trip I booked after I saw a note from someone on this board about the NW 2-for-1 sale. The NW fare for September was a grand total of Cdn$853 for the four of us, which would be tough to beat anywhere.
The one problem with flying Spirit is that as they are a small, discount airline if there are problems with the plane they don't have another one with which they can replace it. We had that happen on our return flight last time - we were stuck in the Orlando airport for about 3 hours waiting for our plane.
- Mike