Under Swoop Airlines' 24-hour cancellation policy, all flight reservations can be canceled within 24 hours of purchase, and passengers can receive a full refund for free, regardless of fare and cabin type, at least 7 days in advance of the scheduled departure time of the flight. The premise is:

When requesting a cancellation for a Swoop Airlines flight, the planned departure date must be at least 7 days in advance
Not applicable to Swoop Miles program and subject to Swoop Airlines cancellation policy for award ticket.
To cancel a Swoop Airlines flight within 24 hours, the flight must be operated and marketed by Swoop Airlines and have a ticket number beginning with 173
Swoop Airlines' 24-hour cancellation policy does not apply to flights booked with travel credits.