Did Jabba have his own personal spacecraft?

Yes, Jabba had his own ship. It was called the 'Star Jewel' and appeared in a variety of Expanded Universe (EU) sources including Star Wars: Dark Forces, in various books including the Han Solo Trilogy and some Star Wars comics.

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As far as I'm aware, it's never been mentioned in a 'G-canon' source such as a TV show or film, nor is it even hinted-at in situations where it would theoretically have been of great use such as the sequence in Clone Wars where Jabba's son is kidnapped and taken off-world.

The ship itself bears a similarity to Jabba's sailbarge, including the sloped front, flattened rear and colour pattern (brown on brown). It apparently had a cloaking device and is described (in Darth Plageius) as;

"A space cruiser of gargantuan size and ostentatious design...Shaped like an arrowhead, the vessel was heavily armed and large enough to accommodate half a dozen starfighters."

_{(source: nocookie.net)}