From my experience all I need know is if there is a delay or not, which I check quickly on the airport's page. If on time: For international flights and large airpors if you have about 1h to travel (traffic, distance etc) leave when the plane is landing. By the time the plane gets to the gate, people get out, find their luggage and so on, it will be ~ 1 hour. You won't need to park your car, go straight to the door for pickups.

Speaking from experiences. Also my gf is a FA.