Kosmos 311 was operated in an orbit with a perigee of 263 kilometres (163 mi), an apogee of 438 kilometres (272 mi), 71 degrees of inclination, and an orbital period of 91.5 minutes. It remained in orbit until it decayed and reentered the atmosphere on 10 March 1970. It was the twenty-seventh of seventy nine DS-P1-Yu satellites to be launched, and the twenty-fifth 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.