Originally Posted by
guv1976
The fastest way to get from BUF to New Haven world likely be to fly BUF-LGA, and then drive a rental car from LGA to New Haven, or hire a shuttle service for that part of the trip.
If cost isn't a concern, this is what I would do. LGA is the closest major airport to New Haven with nonstop flights to/from BUF and the time a connecting flight would add is well above the time you'd save by flying into HVN or BDL.