Air traffic control towers to stay open overnight Budget cuts called for by the federal sequestration forced the FAA in April to furlough air traffic controllers for one day every two weeks. Above, a United Airlines jet takes off from LAX. David McNew, Getty Images / April 22, 2013 Budget cuts won't force the closure of air traffic control towers during overnight shifts, the Federal Aviation Administration said Wednesday. But the federal agency said it is still uncertain whether it will be forced this summer to close towers operated by contractors at 149 small and medium-size airports, including several in Southern California. The staff cuts led to air travel delays at many of the nation's busiest airports. To cut more than $600 million from its budget, the FAA said it also planned to close towers at several medium-size airports at night, including L.A./Ontario International Airport, and completely shut towers operated by contractors at 149 smaller airports, starting June 15. To halt the flight delays, Congress passed a law in April giving the FAA the authority to transfer money from other accounts, including airport improvement funds, to pay for staffing. The FAA put an end to the furloughs but it is not clear whether the legislation will let the FAA keep the contract towers open this summer. Among the contractor-run towers that could face closure are those at airports in Fullerton, Oxnard, Riverside, San Diego, Victorville, Pacoima and Lancaster.