:shocked: I believe the travel rule wherein Mass is not required is if travel time is over one hour by conveyance, 30 minutes on foot, or is dangerous due to weather or conditions, or is unreasonably expensive. This wasn't the OP's question. If he'd have gone to bed earlier, he'd have been at Mass.
But to determine the degree of his sin is not up to us!
It is unwise to try and generate excuses for another. According to Church rules, I NEVER need hear Sunday Mass! It's more than hour's travel, would take a week on foot, requires I go through dangerous, crime-infested neighborhoods, and the price between gas and tolls is very unreasonable! But since I AM able, by God's Providence, to hear Mass most Sundays, despite these inconveniences, why wouldn't I? Do I sign up for government welfare when I do alright without it?
:dancing-banana: