Yesterday I was wondering how to get to the German GP, and it seemed quite difficult without transport. (There is a shuttle bus from a nearby village for those who have cars and can park.)
Sachsenring | MotoGP Shuttle bus | MotogpSachsenring.com
Searching further, I found this tour bus in the UK to Silverstone, but it's leaving from Scotland.
https://www.caledonian.com/sports/motor-sport/moto-gp I've searched their site, and can't find any other MotoGPs. I note that the price of the whole trip including hotel, travel including coach to the circuit, meals, still costs less than a single ticket to the track only for Formula One. I also note the coach is already mostly full for Silverstone.
This company had a trip to Assen, but of course it's already been:
Assen Moto GP by Coach Pickup points available around the country.
British GP @ Silverstone again here, with a small selection of pickup points.
Door2Tour - Motogp Silverstone 2024 - General Admission
This is a Czech company, but Prague is easy to get to by plane. In fact, I've taken a day trip to Dresden from Prague and back before, and it was easy. Not sure how to get to the Sachsenring from Dresden, even though it's between Leipzig and Dresden.
Tours,VIP packages, paddock team experience and tickets from Pole Position Travel But, maybe odd to fly to Prague and then back to Aragon.
There are some others that include, for example, optional flight packages. And some other bits and pieces. But, nothing that really matches what you want.