HTTPS://WWW.GIANTBOMB.COM/FORUMS/GENERAL-DISCUSSION-30/SWCANCEL-WHAT-IS-THE-SOUTHWEST-CANCELATION-POLICY-1925317/

https://www.giantbomb.com/forums/general-discussion-30/swcancel-what-is-the-southwest-cancelation-policy-1925317/

https://www.giantbomb.com/forums/general-discussion-30/sw-guide-what-is-the-southwest-cancelation-policy-1925296/

https://www.devex.com/people/r-cpolicy-can-i-cancel-caribbean-cruise-without-penalty-2401138

https://www.devex.com/people/easy-changes_-what-is-the-cancelation-policy-for-lufthansa-2406645

https://www.giantbomb.com/forums/general-discussion-30/what-is-the-southwest-cancelation-policy-1925255/