Frontier Airlines promotion takes aim at rival Southwest: 'Divorce your old airline'

Frontier Airlines announced a new promotion on Tuesday, taking aim at rival Southwest over its recent decision to end unassigned seating and a long-standing policy of free checked bags.  Travelers on Frontier can receive the Economy Bundle for free, which includes a free carry-on bag, free seat selection and free flight changes for all nonstop travel through Aug. 18, the airline said. Customers will also get a free checked bag for all flights departing May 28 through Aug. 18. Bookings must be completed by M ...