Any AWACS commitment would mark a departure for the alliance which up to now has had no direct role in combatting IS but is increasingly concerned by the threat it poses on its southern flank.
"We can confirm there has been a request for concrete support from NATO to the anti-ISIL effort in the form of NATO AWACS surveillance planes," a NATO official said.
"This request is under discussion by allies," the official said.
Diplomatic sources said the request came from the United States which leads an anti-IS coalition of more than 60 countries, including most of NATO's 28 member states.
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NATO declined to comment on the source of the request.
US officials at NATO were not immediately available to comment.
NATO has few military assets of its own, providing the umbrella command structure for the 28 allies, but in the 1980s they agreed to establish an AWACS (Airborne Warning and Control System) unit to counter the then Soviet threat.