Yes, in many cases, you can cancel a Southwest flight and receive a full refund. For most standard fares, you can cancel within 24 hours of booking and get a full refund. If you cancel outside of the 24-hour window, the refund policy depends on your ticket type. 

Here's a more detailed breakdown:

• Within 24 Hours of Booking:
  You can cancel your flight and receive a full refund, regardless of the ticket type, as long as it's more than a few days before the flight. 

• Outside 24 Hours:

  • Choice Extra (formerly Business Select®) and Choice Preferred (formerly Anytime) tickets: These are refundable, and you can choose between a refund to your original form of payment or a transferable flight credit. 

  • Wanna Get Away® and Choice (formerly Wanna Get Away Plus®) tickets: These are non-refundable, and the value of the ticket will be converted to a flight credit or a transferable flight credit. 

  • Basic tickets: These are non-refundable. 

• Transferable Flight Credits:
  These credits have an expiration date and must be used for travel by that date. 

• Flight Credits:
  These also have an expiration date and must be used for travel by that date. 

• No-Show:
  If you don't cancel your flight and don't show up, your ticket may be subject to the no-show policy, and you may not be eligible for a refund or flight credit. 

• Significant Delay:
  If your flight is significantly delayed (e.g., 3+ hours domestically), and you choose not to travel, you may be eligible for a refund. 

To cancel:
You can cancel your flight online or via the Southwest app up to 10 minutes before your scheduled departure.