Welcome to FT Mobile_Castle!

The information regarding status challenges can be found at the below:

https://www.delta.com/us/en/skymiles...atch-challenge

Most important to note is that you need to have status with a qualifying airline in order to participate in the public challenge mentioned above. Qualifying airlines include Air Canada, Alaska Airlines, ANA, American Airlines, Asiana, British Airways, Copa, Japan Airlines, jetBlue, Lufthansa, Southwest, and United.