If you are looking for local or smaller events, several reputable platforms aggregate rodeo schedules and ticket sales: Tickets | Houston Livestock Show and Rodeo
Tickets can be purchased online at GlobeLifeField.com/American. 2. General Ticketing Platforms where to buy rodeo tickets
For major rodeos, you should first check the specific official site to find authorized sellers and avoid scams. If you are looking for local or smaller