The unexpected passenger gave Emirates airline crew a shock on board the A380 flight from Dubai.
Shortly before arrival, the aircraft was forced to divert to Larnaca in Cyprus after the expectant mother went into labour during the flight.
After giving birth to a baby boy, the mother was stretchered off the flight – with footage from the scene showing her grinning away as she was carted off to hospital.
Both mother and baby are believed to be doing well, and are currently in Larnaca hospital receiving treatment following their ordeal.
Following the birth, Cyprus Airports tweeted: “They say great things come in small sizes. Well we received a sweet surprise today at #Larnaka #Airport. A baby delivered with an #A380!”
Pregnant women require a medical certificate to travel once they have reached 29 weeks, which states the pregnancy has been without complications and the date up to which they are expected to be able to travel.
The letter also must outline how many babies are due, the estimated delivery date, and whether or not the mother is also in good health.
Air travel is not permitted for mothers carrying two or more children beyond 32 weeks.
While for single pregnancies, travel after the 36th week will only be permitted with clearance from the Emirates medical department.
The Emirates jet has now left Larnaca for Paris, to drop off the remaining passengers.
It is unclear how many weeks pregnant the woman on board was.
The incident comes a month after another passenger Nafi Diaby gave birth to a baby girl – despite being only 28 weeks pregnant.
Turkish Airlines crew came to the aid of the new mum after she began to have contractions, helping to deliver her little girl at 42,000 feet (12,800 metres).