Definitely not the case in Phoenix, getting to Sky Harbor airport on bicycle would be tricky. By car it's about 5 miles from my house, on bicycle the only way I could think of is to ride completely around the airport to the far side and ride the "sky train" in. So 5 minutes drive (Uber or taxi is what I usually do) or at least an hour on the bicycle plus waiting for and riding that train. I've thought of riding my motorcycle to the airport but I wouldn't trust it parked out there for a day or more, and I'd be terrified to leave my bicycle at the airport even if I did figure out a way to get in.