I am staying at the Renaissance Hotel in Southpark and have a 6:19AM flight on a Friday. A shuttle company leaves the hotel every morning at 5AM to the airport for $15 and says it takes 15 min to get there. I am flying on a United flight, but it was booked codeshare with US Airways (i just have a US airways flight #). If I opt to take the 5AM shuttle, will I have enough time? I am checking a bag. Otherwise, the same shuttle company will charge me $40 plus grat to come earlier (at a set time). Also, if the flight is booked with US airways, but is actually a united flight, does anyone know if I can check in at the United Counter?