For the Abuja to Port Harcourt route, all airlines use the Domestic Terminal at Nnamdi Azikiwe International Airport. Carriers on this route include Air Peace, Ibom Air, Arik Air, United Nigeria Airlines, ValueJet, Green Africa Airways, Max Air, Aero Contractors, and NG Eagle. Arrive at least 90 minutes before departure. Here’s a table showing all the airlines departing from Abuja to Port Harcourt and the terminals they take off from according to research from Flightpadi.