Kunis kept her head down and shielded her face with a baseball cap as she exited the terminal after having returned from the Toronto Film Festival, where she hit the premiere of her latest film, Third Person, Monday night, looking stunning in an all-white ensemble.
The 30-year-old brunette beauty wore a basic white T-shirt, skinny jeans and boots, carrying a large blue handbag while chatting on her cell phone, presumably to connect with Kutcher, who was eagerly waiting for his ladylove outside in the car.
Yesterday, Demi and Ashton, who split in 2011, were seen exiting the same flight in Los Angeles after attending a tech conference for their joint venture, We Are Thorn (previously dubbed the Demi and Ashton Foundation).
A source exclusively told E! News the not-officially-divorced duo remains on "amicable" terms, but doesn't believe there's anything romantic brewing between the former lovebirds.
As for them being spotted getting off of the same flight in L.A., our source also tells us, "I think it was just the right moment, right time and right place sort of thing. They both do work for [THORN] and I don't think there is anything more to it."
Makes sense, considering Kunis sparked engagement rumors last week when she was seen wearing a simple gold band on her ring finger (a rep for Mila has yet to respond to a request for comment when asked whether the bling was a gift from the beauty's beau).
Kutcher and Kunis were first linked in April 2012, about five months after Ashton and Demi ended their marriage.
The case is still being processed in Los Angeles Superior Court and has yet to be finalized.