Activity
- https://www.devex.com/people/guidelines-penalty-is-there-a-penalty-for-canceling-a-southwest-flight-2379205
- https://www.devex.com/people/what-is-the-penalty-for-cancelling-a-jetblue-flight-2379191
- https://www.devex.com/people/refund_support-how-late-can-you-cancel-a-refundable-delta-flight_guide-2379151
