But for “real” international service many will drive to LAS or LAX for that.
That’s a 6 hour drive to those alone, may not be worth the drive for it, even if they serve more destinations…
While PHX to LAX wouldn’t be too bad in the fact that I-10 is at least 4-lane), roughly 80% of Phoenix to Kingman on US-93 is 2-lane. Otherwise, you’re going out of the way on I-17 to Flagstaff then coming over. So it would be a day trip just to get over there alone…
BL.