Pictured for the first time, Dakota and Chris made their way through Charles de Gaulle airport on Tuesday after spending a few days in Paris.
The 28-year-old actress looked casual chic as she wore blue jeans with leopard print boots, while her 40-year-old beau was rugged up in a black coat, jeans and a large scarf.
Chris and Dakota first sparked romance rumours back in October, when the duo were pictured enjoying a dinner date in Los Angeles.
Sources told PEOPLE at the time that the two stars were alone for their meal and appeared 'cosy' while 'laughing' and being 'affectionate' with each other.
Since then the couple have been seen together on several other occasions.
Most recently, Dakota was seen attending the Coldplay concert in Argentina.
Martin was previously married to Gwyneth Paltrow before 'consciously uncoupling' with the actress in 2014. Paltrow and Martin share two children together, Apple, 13, and Moses, 11, and remain on good terms - Paltrow even shared an Instagram with Martin and her new fiancé, Brad Falchuk, having brunch together recently.