Southwest Airlines is converting AirTran Airways operations to Southwest operations in 22 cities, including Des Moines.
Dallas-based Southwest bought AirTran last year. The airline says Friday that AirTran operations at 22 domestic and international airports will continue and will eventually join the Southwest route map. No specific dates were announced.
Southwest also says AirTran Airways will cease operations in August in six cities.
Southwest flies more passengers in the U.S. than any other airline.
Gov. Terry Branstad welcomed the news about Southwest, calling it a "great day for Iowa." Lt.Gov. Kim Reynolds says it will make Iowa's airfares less expensive and more competitive with surrounding airports.