Nigerian airlines mostly have their maintenance base in Abuja, Kano or Lagos, the major airports in the country. Exceptions in the past were Okada Air that was based in Benin City and Oriental Airlines in Owerri. City Link Airlines (1993-1996) was the only airline to operate from Port Harcourt with an EMB-110 Bandeirante. Kaduna is still the home base of Chanchangi Airlines, although the airline plans to build a new hangar at Abuja.
Some of the airlines that were established in the early nineties, after the airline deregulation in Nigeria, Zenith Air (1992), Triax Airlines (1992), and Sosoliso Airlines (1994) had Enugu Airport as home base. Zenith Air was a short-lived carrier and operated two DC-9s. The former director of Zenith Air is now the CEO of the announced low-cost carrier Red 1 Xpress. Triax Airlines operated three B727s until the late nineties, while Sosoliso Airlines commenced scheduled operations in 2000 with a B727 wet-leased from JAT Airways. The airline subsequently flew with two DC-9s and two MD-80s. The last airline was grounded in December 2005, after a crash landing at Port Harcourt in which 110 passengers and crew were killed.