If you reside in a historic district, to conduct work to the exterior of your historic property, you are required to obtain a Certificate of Appropriateness (COA). A COA is a special permit obtained in addition to the regular building permitting process.
The recommended arrival time at the airport is 75 minutes prior to departure when traveling within the United States. You must be checked in at least 30 minutes before your scheduled departure time.
You should arrive at the boarding gate at least 15 minutes before your departure time for a domestic flight and 45 minutes if you are traveling on an international flight. Baggage check-in time requirements vary by airport.isit delta.com from 24 hours to 30 minutes* prior to a domestic flight within the U.S. or 60 minutes* prior to an international flight, go to Check In, and follow the simple instructions. To access your itinerary, you will need one of the following: 1  A SkyMiles number and Password.