Hi guys.

I'm really grateful for all the help you've shared. Analyzing the formulas takes a lot of time for me to somehow grasp what does it do. I'm not really good in mathematics 🙂 I'm still trying to understand what do these functions do. Guess have to read more about this. Anyway, earlier today, I've tried The Dixie Flatline's post but somehow it takes so long, maybe it's because I don't have an index in place in the Airports table for Lat and Long fields. I will try dwain.c's post and hopefully it work for me. As for Jeff's suggestion for trans-Pacific flights :-), I still have to read about this as I don't have any clue.

Thanks you guys.