Pluto has completed its orbit since its discovery in 1930. It takes Pluto approximately 248 Earth years to complete one orbit around the Sun. However, Pluto's orbit is highly elliptical and tilted compared to the orbits of the eight planets in our solar system.
Due to its eccentric orbit, there are periods when Pluto is closer to the Sun than Neptune, which is the eighth planet in our solar system. This occurred from 1979 to 1999. Pluto's orbit is also inclined at an angle of about 17 degrees relative to the plane of the other planets' orbits, which means that it can be above or below the plane of the solar system.
It's important to note that in 2006, the International Astronomical Union (IAU) redefined the definition of a planet, and Pluto was reclassified as a "dwarf planet." This reclassification was due to the discovery of other objects in the Kuiper Belt, a region beyond Neptune where many icy bodies similar to Pluto exist. Despite its reclassification, Pluto still follows its orbital path around the Sun, just like other objects in our solar system.