Talks between the United States and the European Union on sharing confidential airline passenger information have broken down, according to the EU.
But officials say there will be no disruption to transatlantic flights.
After 9/11, US authorities demanded that airlines should provide personal passenger data for all inbound flights.
But the subsequent US-EU agreement was ruled illegal by the highest European court in May of this year. Saturday was the deadline for a new deal.
A European Commission spokesman said that a legal black hole could be created by the lack of agreement.