Here are the government’s rankings of the leading airlines and their on-time performance for July. The federal government counts a flight as on time if it arrives within 14 minutes of schedule.

1. Alaska Airlines, 89.4 percent

2. Hawaiian Airlines, 88.8 percent

3. SkyWest, 82.9 percent

4. Delta Air Lines, 81.6 percent

5. United Airlines, 76.6 percent

6. Virgin America, 75.4 percent

7. Spirit Airlines, 72.8 percent

8. ExpressJet, 70.9 percent

9. Southwest Airlines, 70.8 percent

10. American Airlines, 70.7 percent

11. JetBlue Airways, 67.8 percent

12. Frontier Airlines, 63.3 percent

Total for all reporting airlines: 75.2 percent

Source: U.S. Department of Transportation

The report does not cover smaller airlines including Allegiant Air and some regional carriers.

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