Nampa is located on Interstate 84 West between Caldwell and Meridian. It is about 20 miles west of Boise on I-84. It is about 40 miles east of Ontario, Oregon on I-84.
There is a Greyhound bus station (http://www.greyhound.com/...) in the downtown area on 12th Avenue South. A few blocks away on 3rd st and 9th ave is a clean cool hotel the only one downtown.
There is a small municipal airport (http://www.flynampa.us/) in Nampa, but the closest place to catch large commercial flights is the Boise Airport BOI.