U.S. airlines are on pace to post their best year for on-time arrivals. Here is a list of what percent of flights at some of the nation's largest airports arrived on-time in the first six months of 2012:

1: Salt Lake City 89.72

2: Charlotte, N.C. 87.54

3: Minneapolis/St. Paul 87.14

4: Phoenix 86.85

5: Las Vegas 86.67

6: Chicago Midway 86.16

7: Baltimore 86.14

8: Atlanta 85.91

9: Detroit 85.73

10: Portland, Ore. 85.37

11: Tampa, Fla. 85.35

12: Seattle 85.10

13: Orlando, Fla. 84.92

14: San Diego 84.70

15: Denver 84.52

16: New York JFK 84.35

17: Dallas/Fort Worth 84.23

18: Miami 84.21

19: Los Angeles 83.70

20: Fort Lauderdale, Fla. 83.59

21: Washington National 83.18

22: Philadelphia 82.73

23: Boston 82.56

24: Chicago O'Hare 81.91

25: Washington Dulles 81.02

26: New York, LaGuardia 80.32

27: Houston 79.70

28: San Francisco 73.35

29: Newark, N.J. 70.61

Source: Bureau of Transportation Statistics