Time Expired was filmed entirely on location in Oklahoma with local actors from Oklahoma and nearby Dallas, Texas.
Lead actor Eric Starkey hates tomatoes in real life.
Scenes that take place at the fictional Oklahoma Tech University were filmed at the University of Oklahoma and University of Central Oklahoma.
President Wallace is inspired by the University of Oklahoma's President Boren, who lives in a white mansion on campus and served as a governor and senator.
Writer-Producer Rachel Tucker appears three times as an extra: once at a booth in the sandwich shop, once in "Germany," and a third time as a cashier in the grocery store.