TONS of flights out of Burlington, connecting to many major hubs.....
The best we have done so far is 67.00 each way USD per person, so that works out to 536.00 USD, or 670.00 CDN..... via Jet Blue.
If I recall correctly we took an 11:00 AM flight (so no hotel the night before was required, and left Mtl by car at about 7:30). We connected at JFK in New York, and arrived in Orlando at about 3:00 PM.
Parking for the week was about 65.00 USD. And that was great too... For an extra charge they will clean your car and have it warmed and ready for your arrival time.
This coming trip we've done things SLIGHTLY differently, we are leaving from Burlington, and returning to Mtl. My SIL will drive us down, but I looked and there are limo services that will drive you down for suprisingly little.
Even leaving from Burlington and returning to Mtl, we still saved a bundle, I think the reason is that we avoid most of the expensive Canadian departure taxes. (Note - Jet Blue do no fly into Canada, you'll have to use another carrier)
And lastly, this is easy to do yourself when using Expedia or Travelocity, just search for the "Multiple city' or advanced search/selection criteria for flights, and then just select BTV (For Burlington) and YUL for Montreal as your return city, couldn't be easier!!!
Anyway, we're sold on travelling from Burlington, Vt, the savings alone makes the 2 hr drive worth it..... We've used the saved money from the first trips to purchase Annual Pases and this wasy we've actually been able to squeeeze a 'free' trip (based upon original budgets).
PM me if you have any specific questions.......