Preston is due to give birth this month after Travolta returns from his Australia trip where he celebrates Quantas Airlines 90th anniversary
Travolta went to Sydney with her personal 707 Boeing to attend at the event that takes 10 days.
The actor received a koala bear, a kangaroo and many other toys for his new baby boy that is due to born in 19 days.
Moreover, Travolta and his wife announced that they want to name their new son Benjamin.
The couple also has a 10 year-old daughter called Ella Bleu.