Check-in opens with the airline, usually 24 to 48 hours before departure. Use the airline's own website or app with your booking reference (PNR) and passenger surname.
If you paid for a seat during booking, it is already assigned and will show at check-in. Free seat selection depends on the fare and the airline.
For international departures from Nigeria, arrive at least three hours before departure with your passport and any required visa or entry documents.