An Ordinary can dispense with the obligation to attend mass on a Holy Day without permission from the Holy See as long as he has just cause.
Just cause can include weather, lack of priests, grave inconvenience to the faithful and several other causes that I can’t recall.
To the best of my knowledge, the only day that may not be dispensed is Christmas.
This was my last training on this rule. We used this rule in the missions, because our priests had to travel to five different places to celebrate mass. It was often very draining to do this on Sunday and again two days later. In this case it would be Thursday and again on Saturday and Sunday. The trip included mass and confessions. We’re talking about 2.5 hours in each place.
Fraternally,
JR