The US group has reported booking 1,000 net orders.
Airbus also delivered fewer aircraft, with a total of 443 to 528 for Boeing.
Airbus said that a notable development in September was the conversion of a draft purchase of eight long-haul A330-200 airliners by British IAG airline group into firm orders.
The aircraft are destined for IAG's subsidiary, Iberia of Spain.
In the segment of medium-range airliners, Airbus said that options for 27 standard Airbus A320 aircraft had been turned into firm orders by low-cost operator easyJet.
