Flyvende farmor (2001)

9 year old Eva is facing a summer stuck in a house at the airport with her air traffic controller dad and pilot mom working all the time as their vacations are canceled due to everybody else's vacation travel. When Eva's paternal grandma shows up at the airport control tower dressed as Santa Claus to see her son, she's not welcome. However, both Eva and her grandma have time for an adventure looking for grandma's long lost love/Eva's grandpa. This includes riding a bus, ferry, airplane etc. with Eva's parents trying to catch up with them in an airport vehicle, a helicopter etc.