Portkeys. Amongst the three fast paced mode of transportation for the wizarding kind, this one was his most favoured. He's humble enough to acknowledge that Apparition is too advanced for him, although being able to side-apparate with his dad, he still isn't fond of the sensation. Flooing is messy, therefore, that leaves him with portkeys.

Jace quickly joined Professor Myers' group, and as soon as they were told to touch the portkey, the Ravenclaw held on the object with two hands, and was immediately welcomed by the sensation of being hooked from the navel. He felt his feet leave the ground...and in a matter of seconds, he was gone.