Only 39% Full: Alaska Airlines’ 10 Emptiest Routes Revealed

In 2025, Alaska Airlines carried 47.1 million passengers, which was the carrier’s best year to date. According to the US Department of Transportation, traffic rose by the smallest of margins—just over 10,000 passengers—to exceed the prior record, which was held in 2019. Some 3.4 million passengers flew internationally, which was also another record.