Kosmos 307 was operated in an orbit with a perigee of 212 kilometres (132 mi), an apogee of 2,023 kilometres (1,257 mi), 48.4 degrees of inclination, and an orbital period of 107.7 minutes. It remained in orbit until it decayed and reentered the atmosphere on 30 December 1970. It was the twenty-sixth of seventy nine DS-P1-Yu satellites to be launched, and the twenty-fourth of seventy two to successfully reach orbit.
Payloads are separated by bullets ( · ), launches by pipes ( | ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.