Southwest Airlines generally offers refunds for canceled or significantly delayed flights, even for non-refundable tickets. If a flight is canceled or significantly delayed (generally a three-hour or more delay domestically, or a six-hour or more delay internationally), and the passenger chooses not to travel, they are eligible for a refund to the original form of payment. Additionally, refunds are available for any bag fees or extras purchased (like seat upgrades) associated with the canceled or significantly delayed flight. 

Key Details about Southwest Refund Policy:

• Refunds for Cancellation or Significant Delay:
  If a flight is canceled or significantly delayed (as defined above) and the passenger chooses not to travel, they can receive a refund. 

• Refunds for Non-Refundable Tickets:
  Refunds are available for non-refundable tickets in cases of cancellation or significant delay. 

• Refunds for Bag Fees and Extras:
  Along with the flight ticket, refunds are also available for bag fees and extras purchased if the flight is canceled or significantly delayed. 

• Refund Processing Time:
  Southwest Airlines states that refunds are generally processed within seven (7) business days. 

• No-Show Policy:
  If a flight is not canceled and the passenger does not travel, the funds may be forfeited or converted into a Transferable Flight Credit, depending on the circumstances. 

Requesting a Refund:
If a refund is due, it can be requested during the cancellation process. If you have already canceled and want to request a refund, you can do so via the refund request form on the Southwest website.