Aero has one of the cheapest fares in the country. It is from as low as N10,000. They claim this is actually better than any promotion and part of their fare structure and not limited to time. They also said that their lowest fares are subject to advance purchase and availability, so you may have to search a number of dates to get the fare you want, especially on busy days such as holidays or peak times.
For a full step by step guide on how to get the cheapest flight tickets see our post “How To Get Dirt Cheap Flight Ticket“