A Lufthansa flight from Bogota, Colombia to Frankfurt departed with 191 passengers on board but landed with 192, the German airliner said on Wednesday.
A woman gave birth over the Atlantic after which the pilot diverted flight LH543 to the northern British city of Manchester to drop off the mother and baby. The flight then continued on to Frankfurt.
Three doctors on board the plane reportedly helped with the delivery.
The airliner said both the mother and baby were healthy and taken to a hospital.
Lufthansa welcomed the new baby and congratulated the mother on Twitter.
“This time the stork was surely a crane,” the airliner said, referring to its logo of a crane bird.
A spokesperson for the airline said births during flights are rare, with only 11 known cases on Lufthansa flights.