Southwest spokesman Chris Mainz said Tuesday that some of the eliminated flights, which span Southwest's nationwide network, could be restored later in 2009. Late winter is typically a slow travel period.
"This is a response to a slower traffic period, and we're giving ourselves some operational flexibility in the winter months," he said.
Southwest is better insulated than its rivals from high jet fuel prices because it bought options to get most of its fuel at below-market prices. Still, the airline's fuel bill has been rising, eating into margins at the most consistently profitable U.S. carrier.
Chairman and Chief Executive Gary Kelly said in June that the Dallas-based low-cost carrier hoped to grow modestly in 2009. But he tempered that outlook by saying the expansion plans could be scrapped if oil prices remain high or the economy weakens.
At the time, Kelly said Southwest still planned to add 14 new planes next year. Mainz said Tuesday that new planes will be added while older aircraft are retired, keeping the airline's fleet "relatively flat." Southwest has about 530 jets, all Boeing 737s.
