“Passengers can receive a full refund if they cancel their flight at least 24 hours before departure. Southwest Airlines offers refunds if you cancel your flight at least 3 hours before departure. If you booked a ticket for travel to or from the US, the refund will be credited within a week. Here are some key points of Southwest Airlines’ 24-hour cancellation policy:
Source: https://communities.actian.com/s/question/0D5Nu00000Lv1o8KAB/faqcopacan-you-cancel-copa-flight247