I'm outa here

I'm out of here

slang I'm leaving. "Out of" is commonly shortened colloquially as "outta." I don't have to listen to this criticism—I'm outta here! OK, well, the train comes in five minutes, so I'm out of here.
See also: here, of, out
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

I’m outa here

See also: here, outa
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
In any event, three more weeks, and I'm outa here!"