| Clue | Source | Date |
|---|---|---|
| Budget carrier from 1993 to 2014 | New York Times | 01 Sep 2021 |
| Southwest acquisition of 2011 | ||
| Southwest acquisition of 2011 | New York Times | 12 Dec 2019 |
| Former Southwest subsidiary | LA Times Daily | 02 Nov 2015 |
| Carrier bought by Southwest | Newsday | 26 Apr 2015 |
| Former Southwest subsidiary | ||
| Carrier bought by Southwest | ||
| Low-cost carrier owned by Southwest | ||
| Dallas-based budget carrier | ||
| Low-cost carrier owned by Southwest |