National Flood Insurance Program Extension Act of 2011 - Amends the National Flood Insurance Act of 1968 to extend the National Flood Insurance Program from September 30, 2010, through December 31, 2011.
Continues through December 31, 2011, the authority of the Administrator of the Federal Emergency Management Agency (FEMA), with the President's approval, to issue up to $20.725 billion in notes and obligations to finance the Program.