Frontier digs at Southwest with its own free bag check promotion: ‘Divorce your old airline'

1. Frontier Airlines launches free bag check promotion post Southwest's policy change. 2. The promotion targets Southwest customers, enticing them to switch airlines. 3. Southwest risks losing market share despite potential revenue gains from bag fees. 4. Frontier aims to increase customer loyalty with temporary perks until August. 5. CEO Barry Biffle emphasized Frontier's commitment to customer preferences during promotion.