Does Emirates ever have good Business Class Fare Sales?

I am looking to book a flight for my dad from CMB to YYZ (usually the switch is Dubai) something from May and leaving in June or July - I am flexible with the exact dates, but I would like it to be around those months.

He is older and I would love to send him Business Class as it's getting rougher for him to make the trip comfortably.

But I just looked and I could only find a fare that was around $4500 both ways.

Am I looking too late for a flight in May, which is why the price is so high - or is that usual for the spring/summer time?

I looked for him more recently to come in October and I swear the flight was around $3000, which is ok.

Any tips? I signed up for the emails.