Getting to and from the airport
In most cases local transport authorities will have special rail, subway, or bus connections for the local airport. Here are quick links for Bentley’s most popular destinations: Boston, Chicago, Denver, Las Vegas, Los Angeles, Minneapolis, New Orleans, New York City (LaGuardia, JFK), Orlando, Philadelphia, San Francisco, San Juan (PR), Vancouver, and Washington D.C. (Dulles, Reagan).
Flights
The International Council on Clean Transportation (ICCT) ranked airline's fuel efficiency in 2013. In the report, the ICCT ranked the cleanest airlines using fuel burn data and some statistical methods.
Click here to read the report. Page 4 has a chart that summarizes the results nicely.
Smartphones
If you have a smartphone, don't be afraid to have your boarding pass sent to your smartphone. It will likely arrive as a URL in a text message which will bring a QR code up in your web browser when clicked. You will need to bring it up at baggage check-in, security, and boarding. If traveling for business, most departments will accept printed receipts for costs that may come up, so be sure to have receipts emailed to you!