 The Milwaukee Airport Rail Station 's primary functions are to serve as an airport rail link for General Mitchell International Airport and to serve as an alternate to the downtown Milwaukee station for residents of the southern portions of the Milwaukee metropolitan area . The station is served only by the Amtrak Hiawatha Service , and sees fourteen daily arrivals , seven each from Milwaukee and Chicago Union Station . The station is the first stop en route to Chicago , with a travel time along the 8 @-@ mile ( 13 @-@ kilometer ) section taking 10 minutes . It is also the third stop en route to Milwaukee , with a travel time along the 78 @-@ mile ( 126 @-@ kilometer ) section taking one hour and 14 minutes . For 2008 , the station handled 149 @,@ 824 passengers . 
