Will be attending a conference near the airport soon. If a provider lists DT Chicago is the airport area an easy trip or will there be an extra for travel time?

There are lots of good providers near O'hare. Check the rs2k ad board for O'hare area.  
Sandra (coachme9@gmail) runs an agency wil a few nice gals who stay at diff dnt hotels. Julia and Ava.  
Down town is a different market. Often extra for outcall