A bill to amend the Clayton Act, and for other purposes.

Prohibits an air carrier that operates more than 15 percent of the domestic available seat miles and holds or operates more than 20 percent of the slots at LaGuardia Airport and Ronald Reagan Washington National Airport from owning or operating, in any two-hour period, more than 20 percent of such slots.

Directs an air carrier that owns or operates any excess slot to return such excess slot to the Federal Aviation Administration (FAA), or sell such excess slot through an auction conducted by the FAA Administrator, within 60 days after enactment of this Act.