Magus (Temporal abilities)

Inquiry

Can Magus utilize magic to travel through time? Is that how Magil was able to return to the present in Radical Dreamers?

Instead of running when the party runs, Magus floats, most likely controlling gravity or possibly magnatism to do so.
Magus summons Lavos. A summon is either the teleportation of a being from one location to the caster's current location on the same plane of existence. Any teleportation is a manipulation of space, displacing something form point A to point B.
Instead of running or even floating up to enemies that Magus wants to slash with his scythe, Magus does a short teleportation there. As stated above, any type of teleportation is a manipulation of space.

Magus' Lavos summoning gone wrong does propel everyone to different time eras -- however...This is probably due to Lavos's involvment.

Magus appears stuck in 12000 B.C. Of course, he did want to stay there to get a shot at Lavos.
Magus, disguised as The Prophet, forces his sister to seal a time gate. He does not seal it himself. This may be because he cannot, or maybe he didn't want to blow his cover as The Prophet.
The Gurus manipulated time chiefly through intellectual application of magic. Magus is not a scholar, and would probably travel through time with their devices.