<p>renting the car is your best bet, unless outrageous:
<a href="http://www.yale.edu/ytravel/airlines/airport_overview_chart.htm#ground%5B/url%5D">http://www.yale.edu/ytravel/airlines/airport_overview_chart.htm#ground</a></p>
<p>Amtrak runs to Providence but not to the airport:
<a href="http://www.pvdairport.com/ground_transport/taxi_train.htm%5B/url%5D">http://www.pvdairport.com/ground_transport/taxi_train.htm</a></p>
<p>New Haven train station is not walking distance to campus; per above they appear to have shuttles for Bulldog days, but do not normally (major flaw, have to take a cab)</p>