A comprehensive collection of useful travel information is found by clicking here.

Here is some additional or alternate information:

From Chicago:

Check on the coach service between Lafayette and O'Hare(Chicago): 

(765 743 3120) (www.expressaircoach.com).

Chicago O'Hare -- Express Aircoach
http://ww2.expressaircoach.com/purdue/index.php/Chicago-To-Purdue.html

It runs 5 runs a day from O'Hare (9AM, 12:30PM, 2:30PM, 5:30PM and 8:30PM Chicago time) and from the airport in West Lafayette (7AM, 10AM, 12noon, 3PM and 6PM). 

The cost is $65 per person each way and is non-refundable.  They are doing maintenance during the summer, but will guarantee space if it is reserved at least two days in advance. 
Customs clearance in Chicago can run 2 hours. 

If one is delayed then one may take the bus at next available time.

In addition, it is also possible to travel by a train or busses or by renting a car.

Chicago time is one hour behind Lafayette time. The trip takes about three hours.

AmTrak (www.amtrak.com) 1-800-872-7245
There is one train a day from Lafayette to Chicago downtown.  It departs at 7:32AM and arrives at 10:05AM.  The fare is $30 for
coach class.  From Chicago to Lafayette there is a train at 5:45PM arriving in Lafayette at 9:58PM with a fare of $30 coach.

Indianapolis International -- Lafayette Limo or Star of America
 http://www.lafayettelimo.com/
 http://www.starofamerica.com/

From Indianapolis: