The galaxy is a big place. But the universe is much bigger. Still, most of Star Trek canon seems restricted to exploring our own galaxy - and even then, only a small part. Sure, there's limitations to exactly how fast Federation ships can travel. But there have also on occasion been times where external forces or influences have thrown ships far beyond their normal range, forcing them to travel much faster than anyone imagined possible.
This question addresses visitors coming from outside our galaxy. However, I'm interested in any incidents where Federation crews or other Milky Way natives have been flung beyond its reaches. Also, my interest is particularly in normal space travel - not places like fluidic space, alternate dimensions, etc.
Excluding travel to other dimensions, universes, or timelines, or fluidic space, has there ever been a Star Trek episode (in any series) that included travel to places beyond our galaxy?