WestJet lead the way.
Just received an email from WestJet that shows the way for other carriers.
It has been sent to everyone on their contact list including past passengers and future passengers.
It describes the additional cleaning procedures they have brought in to counter Covid19, the HEPA air conditioner filters and above all, how they will be flexible with changing booking dates at no charge if asked.
I have yet to travel with them but the email from their CEO has certanly brought that date closer!