The 34-year-old, who filed for divorce from wife Demi Moore on Friday, is said to have been very excited to spend the festive season with his family in Iowa and his 29-year-old girlfriend, reported Showbizspy.
"Ashton was really excited about bringing Mila home to hang out with his family. He couldn't wait to get back to Iowa because people don't bother him there and said he was looking forward to chilling out," a source said.
Kunis is said to already be close with Kutcher's family as they have known each other for 14 years since meeting on the set of the comedy series "That 70s Show".
The couple were spotted picking up a few last minute gifts in Bed Bath & Beyond in Iowa since arriving.
"They were picking out gifts for his family. They were inseparable and having such a good time in the store. Ashton had his arm around her," the source added.