Airlines and airports serving cities statewide braced for the arrival of Hurricane Idalia on Tuesday as major air carriers relocated planes and rebooked passengers, while South Florida aviation centers braced for ripple effects as the storm took dead aim for the Gulf Coast. American Airlines, which maintains a major hub at Miami International Airport, issued travel alerts for 12 airports in Florida, Georgia and South Carolina, and is closely monitoring both Idalia as well as Hurricane Franklin, which is churning toward Bermuda in the western Atlantic.