From Tips from TravelNerd Offer a Smoother Ride Through the Airport:

The "Airports by TravelNerd" app offers airport map, flight status updates, and local transportation info.
The “Airports by TravelNerd” app offers airport map, flight status updates, and local transportation info.

The “Airports by TravelNerd” app offers airport map, flight status updates, and local transportation info. Images courtesy of NerdWallet.