DOT sues Southwest, fines Frontier for 'chronically delayed flights'

1. Southwest Airlines faces a DOT lawsuit over chronic flight delays. 2. Allegations include nearly 200 late arrivals at specific routes from 2022. 3. Department of Transportation is enforcing stricter consumer protections. 4. Frontier Airlines also fined for operational delays, indicating broader industry issues. 5. JetBlue Airways was recently fined for similar flight delays.