I have a hard time believing major leaguers will ride the bus for 3/12 to 4 hours. They don't even like to do 90 minutes in spring training, and now teams are letting their vets decline to take minor league rehab assignments (the Athletic just did a long article about that).
I would think charter flight, only question is can it get all the way to Williamsport or will they have to bus it from Harrisburg.
Per Lauber:
And now, with the series even, the teams will change locations Sunday, hopping the short flight to Williamsport for the MLB Little League Classic.
I wonder if they share a plane.
(Also realizing there's no time to take the bus if they are leaving in the a.m. as they are expected to do promotional stuff with the Little Leaguers too. They won't really get that much of a break having a night game instead of a day game.)