After Hitler committed suicide several groups of Nazi higher ups, senior officers, and staff attempted to breakout of the Bunker. None made it more than a couple of blocks. Berlin was swarming with Soviet troops.
Hanna Reitsch flew in/out of Berlin on April 26th/ 28th (Hitler killed himself on 4/30) via an improvised air strip that the History Channel guys say was accessible from a secret tunnel that originated 20 yards from the bunker. I don't believe he made it out but it was definitely possible