i got a promotional email from frontier website that said limited time. but tbh it doesn't hurt to try it or to call them and try anyways!
make sure you have a frontier account!
apply here www.frontierstatusmatch.com/
attach a screenshot of your other airline's status,
they charge a processing fee of $49.00 usd.
they said it may takeup to 72 hours but they sent me an approval email in less then an hour!
"Your Status Match Application is Approved
Your new Elite50k Status Match will appear in your myFRONTIER account within 72 hours.
Once your new Elite50k status is active, you will have access to new benefits and features with Frontier.
See the full list of Elite50k benefits here.
Thank you for using the Frontier Status Match service."