Here is some useful travel information for you as you think about purchasing tickets for the 2010 conference.
If you fly through the Philadephia airport, it is possible to get a flight directly into New Haven on US Air. US Air is the only airline that flies into New Haven. The flight is about one hour long and is in a small prop commuter plane. You would then need to take a taxi to your hotel or to the divinity school, depending on when you arrive.
If you fly into Boston, you can take a Bus to South Station and take an Amtrak train to New Haven. You would then need to take a taxi to your hotel or to the divinity school, depending on when you arrive. For Amtrak schedules and reservations: http://www.amtrak.com/servlet/ContentServer?pagename=Amtrak/HomePage
If you fly into Bradley International Airport in Hartford, CT (about an hour drive from New Haven) or New York area airports (LaGuardia International or John F. Kennedy International), there are a couple of good limo and shuttle options:
Or you can take a bus or taxi into New York City to Grand Central Station and get a train ticket to New Haven on MetroNorth: http://as0.mta.info/mnr/schedules/sched_form.cfm