Tri Delta Transit is the official mobile ticketing app for Tri Delta Transit, a transportation service catering to nearly 290,000 residents in Eastern Contra Costa County, California. This app offers a convenient way to purchase and use tickets instantly on your iPhone, eliminating the need for paper tickets or carrying cash.

With Tri Delta Transit, you can easily buy and use tickets using your debit or credit card. The app allows you to store multiple tickets on your phone for future use, making it even more convenient for regular travelers. Whether you're traveling alone or in a group, you can pay for a single fare or multiple fares with ease.

It's worth noting that while mobile tickets are available, they do not guarantee a seat on the bus. All ticket holders, whether using paper or mobile tickets, are subject to a first come, first serve basis. However, the app provides a seamless ticketing experience, making it a valuable tool for Tri Delta Transit users.