How often does Southwest Airlines operate flights on average?

Southwest Airlines operates a significant number of flights each day, reflecting its status as one of the largest domestic carriers in the United States. The correct choice indicates that Southwest averages more than 4,000 flights a day, which aligns with the airline's extensive network and operational capacity. This high volume of flights facilitates efficient travel options for millions of passengers and showcases the airline's strategy of connecting various cities with a focus on quick turnaround times and convenience.

The other options, while they suggest large numbers of flights, do not accurately represent Southwest's operational statistics as of October 2023. The figure of over 4,000 flights captures the airline's robust scheduling and frequent service, which is critical to its business model, especially as it seeks to maximize capacity during peak travel periods.