If you hadn't already guessed, Zoom (Eobard Thawne) can travel through time at will:
---
Zoom proves that he is FAR faster than Barry and Wally:
---
Only when Zoom stopped long enough to try and kill Iris were the Flashs' able to catch up to him:
---
Barry taps into the Speed Force more than he ever has before, and begins pushing Zoom through time -- eventually pushing him into a device that severed Zoom's connection to the Negative Speed Force:
Note that Zoom did not seem like he was actively fighting against Barry. Furthermore, after Zoom was 'depowered', Barry stated that if he began moving again his connection to the NSF would be 'resparked'.
ie. the only way to keep this version of Zoom at normal speed levels is to first depower him with the aforementioned tech, then keep him perpetually immobilized.
Professor Zoom blitzes Superman, Hal, Booster Gold and Rip Hunter -- whips up a cyclone to own Rip/Booster a little more (adding insult to injury) -- then, once he was done playing, Zoom leaves the battlefield by simply 'jumping' back into the timestream:
Once he did so, not even Skeets could track him in time:
Zoom is learning how to manipulate the speed force in ways that make the Flashes look like idiots...
-Zoom-
"The speed force is tied to so many things when you pull back the electrical curtain and see it for what it truly is: time. All of time. Existence moving through reality. Kinetic energy. Temporal energy. A storm of intelligence and experience that can connect me to everything and everyone":
---
Zoom can steal the time from other beings' lifelines:
---
Zoom resists having his speed stolen by an alternate version of Barry Allen (the same guy who was able to easily steal 'mainstream' Barry's speed):
---
Zoom 'unravels' the alternate Barry Allen's life (ie. uses the speed force to age him into dust... I think):
---
After telling Barry his plan, Zoom leaves the field - and when Barry/Bart go searching for him, we see that Zoom can apparently age/de-age himself on a whim (which correlates with my previous post):