The couple, who both follow Kabbalah, were en route to Israel to renew their wedding vows.
And it looks like Demi, 47, is determined to keep hold of her man at any cost.
The Ghost star latched on to Ashton's left arm as they made their way through the airport, staying as close to him as possible.
But Ashton seemed lost in his own thoughts, with his head down and both hands in his pockets.
The couple recently celebrated their five-year wedding anniversary, posting a picture on Twitter of them in bed together.
Demi accompanied the picture with the caption: 'Thank you for all the anniversary wishes. Enjoying a day lounging around watching 'Breaking Bad' - great show!'
But behind the united front, it has been anything but smooth sailing.
Ashton has faced allegations that he was unfaithful to Demi on more than one occasion.
And he took to his Twitter to make his feelings about the accusations very clear.
He said, 'I think Star magazine calling me a 'cheater' qualifies as defamation of character. I hope my lawyer agrees.
'STAR magazine - you don't get to stand behind 'freedom of the press' when you are writing fiction.'
Kutcher's representative also denied the story, while his wife came out in support of her husband.
'Excellent point my love!' and 'No question!' she wrote in response to Kutcher's comments." (source)
