Southwest Airlines expects to adjust flight times and frequencies in a number of underperforming markets in 2013.
The airline's chief executive Gary Kelly says today in an earnings call that "a number of markets" were not performing to satisfaction and that the carrier will address that this year.
Kelly did not identify the markets, but says that for the most part, the airline will try to improve the efficiency of the flight schedules in those markets.
"We want to get more of our flights concentrated between the 8am and say, 7pm window," says Kelly.
While he says that Southwest hopes to avoid dropping non-stop service between city pairs, Kelly says that this might be inevitable in some cases.
"In this environment where costs have gone up and demand has gone down, that's a possibility too," he adds.