Craig Ruttle, Associated Press
In this photo taken Tuesday, March 11, 2014, a large passenger plane flies over a home above a neighborhood not far from a runway at John F. Kennedy International Airport in New York.

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

1. Hawaiian Airlines, 94.0 percent

2. Alaska Airlines, 90.3 percent

3. Virgin America, 86.5 percent

4. Delta Air Lines, 85.2 percent

5. AirTran Airways, 84.6 percent (asterisk)

6. US Airways, 83.3 percent (asterisk)(asterisk)

7. American Airlines, 82.3 percent (asterisk)(asterisk)

8. United Airlines, 81.8 percent

9. SkyWest, 80.9 percent

10. Frontier Airlines, 79.7 percent

11. JetBlue Airways, 77.4 percent

12. Envoy, 75.2 percent (asterisk)(asterisk)(asterisk)

13. Southwest Airlines, 74.2 percent (asterisk)

14. ExpressJet, 74.2 percent

Total for all reporting airlines: 79.6 percent

(asterisk) owned by Southwest Airlines Co.

(asterisk)(asterisk) owned by American Airlines Group Inc.

(asterisk)(asterisk)(asterisk) formerly American Eagle

Source: U.S. Department of Transportation