What should I do?

Due to a school competition, I'm going to be in Louisville from the 20th to the 24th. I don't know how long I'll be flying back on Sunday, and I believe that I'm going to be busy on Saturday.

Would this count as a valid excuse on not going to mass? (please note that I'm not trying to get of going to mass; I have been going to mass every Sunday since the beginning of April.)