If a hub is being slammed by weather it can be 15-20 mins. The vast majority of the time it is anywhere from 0-5 mins. I only call when I must, I will not call scheduling to remind them to do their job. Where I work schedulers and the company don't treat us too nice so we aren't very "willing" to go above and beyond when someone else makes a mistake. Many times it is easier to just speak to a supervisor when a new class of schedulers comes in b/c they will try some CRAZY stuff.
True story- happened a few weeks ago:
CS: "We show you did not check in this morning for your 8:30 report time. Looks like your first turn went out on time and you are on your way back to mem on Leg 4- just want to make sure you came to work so if you can call us back when you land and let us know you are here that would be great"
Me calling CS: "hey, (recognize its the same girl that called with the voicemail) could I speak with the supervisor"
Sup: "OMG please tell me she didn't call you"
Me: "Yep she did- wondered how the flights were going without an FO"
Sup: "I am soo sorry! You would not believe the stupidity in this room!"
Me: "Just out of curiousity- who did she think was flying in the seat?"
Sup: "She prob thought hopes and dreams- we are still struggling with her realizing we need 2 pilots for each flight and they can't be in the same seat to make it work"
Me: "Thats scary"
Sup: "Welcome to my world- have a great flight!"
Not word for word but basically what was said- truly amazing that any flight gets out!