Both Orlando and Miranda don't share photos of Flynn's face on social media in a bid to protect his privacy.
However, the Pirates of the Caribbean actor has shared some insights into Flynn's personality.
On a snow trip back in 2019, Orlando remarked that Flynn is a lot more risk-averse than he was as a child.
"It’s takes baby steps for some...and one of the many lessons I’ve been learning of late... I was that kid who would jump first then ask questions later...not my son💪he likes to observe assess the situation and then make a calculated decision about whether and/or how to proceed," he captioned a clip of himself filming Flynn and an instructor snowboarding together.
Since their split in 2013, Orlando and Miranda have been the perfect celebrity co-parents.
“When Orlando and I first separated our priority was always Flynn and making sure that, you know, Flynn was happy and his needs were always at the forefront, and so we were very amicable from the beginning,” Miranda told the Nova FM’s Chrissie, Sam & Browny in October 2020.
Orlando has since become engaged to singer Katy Perry whom he welcomed daughter Daisy Dove with in August 2020.
Miranda has also remarried to Snapchat founder Evan Spiegel and has two other sons with him, Hart born in 2018 and Myles born in 2019.
WATCH BELOW: Miranda Kerr reveals how "close" she is with Katy Perry. Post continues after video...
Flynn is also a doting big brother to his half-siblings.
"Flynn couldn't be more excited to be getting a little sister – he's already got two brothers from Miranda," Orlando told HELLO ahead of the birth of Daisy Dove.
"So although the circumstances are definitely unusual, this is a wonderful time for us."
One thing's for sure, Flynn is so loved.
"I could not be more proud to be the Mother of Flynn," his supermodel mum wrote on Instagram to mark a decade since he came into the world.
"He is a ray of light in this world ☀️ Happy 10th Birthday Flynn."