1. Charlotte Douglas International Airport — Aside from rain during hurricane season, Charlotte, North Carolina has decent weather so you’ll not have to be concerned about being stuck. CLT is a USAir hub with gates that are fairly close to one another. USAir does a pretty good job managing connecting flights and making sure your gates are close together. If you’re switching airlines, you do not need to go through security screening from terminal to terminal. Finally, CLT has a decent food court.
2. Salt Lake City International Airport – Like CLT, SLC is pretty efficient where all terminals are connected. Salt Lake City doesn’t have much delays compared to Denver if you are choosing a connecting flight in the mountain region. SLC is great for Delta flights as it is their secondary hub.
3. Phoenix Sky Harbor International Airport – Although PHX is huge but weather is always on your side. You’ll never be delayed due to weather. Have ever you heard of bad weather in Phoenix? Ever? The downside to PHX is having to go from Gate A26 to B25 (see below) which is quite a walk. The trick is to look for one of the gate cart agents to give you a ride. Just tip the driver a few bucks and he’ll get you from gate to gate in a matter of minutes. PHX also has free WiFi service.
4. Atlanta’s Hartsfield-Jackson – Despite being one of the busiest airport in the US, I have never had any issues connecting in ATL. ATL’s terminal tram system is also fast compared to other tram systems (i.e., Denver, Houston, etc.).
5. Las Vegas McCarran. This is probably the best place to be stuck if you missed a connection. LAS has are plenty of machines (video poker, Wheel of Fortune, etc.) to keep you busy while you wait for your connection. If you’re stuck overnight, go try your luck on the Strip. In addition, almost every major airline has a non stop flight out of LAS. So worst case scenario is for you to bring your cancelled flight ticket to another airline and beg them to let you on their plane.