Many major metropolitan areas also have secondary international and regional airports, supporting national, discount and commuter airlines.
In addition to the major interstates listed above, many Midwest cities have secondary interstate service such as outerbelt and by-pass systems.
Most of the Midwest lacks regional passenger rail service, but segments of Amtrak routes may suffice. Chicago, however, is a major Amtrak hub.
Greyhound and Megabus offer a variety of routes and connections to guide through the Midwest.