Airasia is now having unlimited travel pass. I could not find the deal yesterday on the app and web of Airasia but suddenly found it. I believe the pass is a limited offer and can end anytime before the promotion date. The deal has to be tied to the holder of the BIG account (Airasia loyalty account) and you cannot transfer it to another person.
I'm not signing up yet but do read the terms and conditions carefully. I'm putting up the link in case people are not able to find the direct link.
Links
https://www.airasia.com/deals/passes/airasia-unlimited-pass/offers/airasia-unlimited-pass#
Soya Cincau site did a writeup on it.
https://www.soyacincau.com/2020/03/02/airasia-unlimited-pass-rm499-5-things-you-need-to-know/