Allegiant Travel Company (ALGT) recently reported a disappointing year-over-year decrease in traffic and capacity for December 2023.Scheduled traffic (measured in revenue passenger miles) fell 6.8% from December 2022 levels. Capacity (measured in available seat miles) for scheduled service declined 4.4% from the December 2022 reading. The load factor (percentage of seats filled by passengers) in December 2023 reached 82.5%.Total departures (scheduled services) dipped 5% year over year in December 2023. Howe ...