The following year Frontinus held a second consulship as suffect in February, with Trajan as his colleague, and two years later he was made "consul ordinarius" with Trajan. Birley notes, "This exceptional honour underlines the high regard in which he was held, and suggests, further, that Trajan had a debt to repay." He was also a member of the College of Augurs. He died in 103 or 104, a date based on Pliny the Younger writing to his friends that he was elected to the college of augurs to fill the vacancy Frontinus' death had created.