US Airways bankruptcy filing isn't expected to have a major effect on Twin Cities air travelers. The airline has one gate at Minneapolis-St. Paul International Airport, and operates from 16 to 20 flights daily. Those flights are expected to continue while the carrier re-organizes. Airline analyst Joel Denny, with US Bancorp Piper Jaffray, says bankruptcy does give US Airways a slight competitive edge because it won't have as much debt. He says if US Airways decides to lower fares to please jittery customers, Northwest Airlines could be forced to do the same on the routes where it competes.