"We apologise to our customers for this disruption and we're arranging an alternative aircraft for them to continue their journey to the Gold Coast, where they will arrive early tomorrow," a Jetstar spokeswoman said.
"Safety is our highest priority, so our experienced captain diverted the flight to the closest airport en route to the Gold Coast as a precaution, and it landed safely in Guam where it will be inspected by engineers."
The airline insisted it was a "priority landing" rather than an "emergency landing". Nonetheless, the plane certainly was scheduled to have a stop in Guam en route to Australia.
The route is operated by a Boeing 787 Dreamliner, one of the world's most modern aeroplanes. However, the plans didn't have an easy introduction into service with a number of fires on-board blamed on lithium battery powerpacks.
Boeing 787s are now in service with a number of airlines worldwide with United Airlines, Air India and Japan's All Nippon Airlines, as well as Jetstar, using them on Australian routes.