Many U.S. airports will continue to see fewer flights this fall as airlines reduce capacity following the busy summer travel season. Airlines are expected to offer 12.5 billion seat miles in the fall quarter, just above the low point of 12.1 billion notched immediately after the Sept. 11 terrorist attacks. Still, several analysts predict the latest round of capacity cuts will likely be the last. "The economy has bottomed and is beginning to turn around," says aviation consultant David Swierenga. "Carriers will sit tight and go with the (capacity) cuts they've already made."