The cancellation policy depends on numerous factors like the route, the fare you have paid, etc. To know more about the answer to the question ‘how to cancel southwest airlines flight,’ read this blog thoroughly. The travelers just need to dial the Southwest Airlines official phone number -+1-800-435-9792 or (OTA) +1-800-860-5036. https://skynair.com/blog/how-to-cancel-southwest-airlines-flight/