Phoenix Sky Harbor International Airport sees more than 130,000 passengers arriving and departing daily. While it's among the busiest airports in the world, it wasn't always that way.

A walkway connecting Terminal 3 to Terminal 4 is under construction at Phoenix Sky Harbor International airport as international travel grows.

PHOENIX (AZFamily) — City officials released more information about their plan to build a new terminal for Phoenix Sky Harbor, but construction won’t likely start until the next decade.