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May 2010 Regularly Scheduled Flights with More than 50% Delayed Arrivals of More than 30 Minutes

RankCarrierFlight NumberMonthOrigin-DestScheduled Departure TimeNumber of Operations (minimum of 10 per month)Number of Flight Operations Not Arriving On-Time*Percent of Flight Operations Not Arriving On-Time*Average Number of Minutes of Delay (30 min late flights only)**
1SkyWest4637MayLAS-LAX1552252392.064
2SkyWest4834MayLAX-LAS1730252392.073
3SkyWest4922MayLAX-LAS1422252392.053
4Comair6770MayPHL-JFK1739251976.092
5Comair6736MayDCA-JFK1755312374.288
6SkyWest4488MayOKC-MSP1135292172.453
7Delta2912MayATL-ORD1715251872.084
8Southwest620MaySFO-DEN1825191368.487
9Delta2252MayATL-MEM1850312167.7110
10Southwest52MayDAL-LBB2015261765.479
11Pinnacle3703MayRDU-DTW1855251664.0104
12Delta1777MayORD-ATL1905251664.079
13Southwest595MayBWI-SDF2050191263.268
14American1940MayORD-MIA1915311961.3107
15Delta2218MayDTW-JFK1530311961.378
16Delta1677MayORD-ATL1508311961.3100
17American Eagle3608MayATL-MIA1600311961.368
18Comair6599MayJFK-IAH2015311961.383
19Southwest413MayDAL-MAF1950201260.051
20Delta1484MayDTW-EWR1545291758.682
21SkyWest4484MayLAS-LAX1935311858.160
22Southwest398MayELP-SAT1905191157.977
23Pinnacle3876MayCMH-LGA1625251456.080
24Pinnacle3960MayIND-RDU1650251456.082
25Pinnacle3876MayLGA-CMH1355251456.077
26Pinnacle4301MayPWM-LGA1720251456.066
27Comair6507MayDTW-IAH1515251456.0107
28Comair6390MayIAH-MSP1748251456.0108
29ExpressJet2452MayATL-EWR1700251456.0129
30ExpressJet5728MayROA-ORD1742251456.0104
31ExpressJet3082MaySDF-EWR1720251456.081
32ExpressJet2868MaySTL-EWR1655251456.091
33Delta2845MayDTW-SFO1220181055.680
34Southwest220MayMDW-AUS2025201155.050
35Delta2888MayATL-GRR2035311754.8119
36Delta2859MayMEM-MCI2006311754.8118
37American Eagle3622MayORF-MIA1715311754.885
38Comair6521MayJFK-MCI1800311754.892
39Comair6517MaySYR-JFK1823311754.876
40ExpressJet2396MayEWR-DTW1705311754.888
41Pinnacle4331MayLGA-SAV2000221254.683
42Pinnacle4304MayORF-LGA1745221254.686
43Southwest3692MayBWI-BDL1720221254.672
44Pinnacle3684MayCAE-LGA700241354.283
45Pinnacle4200MaySAV-LGA1845241354.2102
46United646MayORD-EWR1309261453.977
47Southwest45MayHOU-HRL1900191052.683
48Comair6582MayORD-JFK1335211152.475
49United685MayLGA-ORD1503211152.4129
50Southwest1273MayDAL-SAT1850211152.473
51ExpressJet2399MayATL-IAH1830211152.472
52Pinnacle4287MayLGA-CAE1930251352.086
53Pinnacle3814MayLGA-IND1400251352.085
54Pinnacle4200MayLGA-SAV1545251352.057
55Delta2044MayIND-DTW1715251352.072
56Comair6253MayDTW-OKC2000251352.051
57Comair6455MayORF-DTW1620251352.0106
58SkyWest6650MaySFO-MOD2130251352.0110
59Southwest1205MaySTL-SDF2015251352.061
60ExpressJet2665MayDTW-EWR1952251352.092
61ExpressJet2613MayEWR-CMH1930251352.0111
62ExpressJet2337MayORD-EWR1400251352.098
63ExpressJet5680MayORD-GSP1928251352.098
64American2477MayDFW-LAX1935311651.676
65Delta126MayDTW-JFK1315311651.682
66Delta1591MayFNT-ATL1720311651.696
67Delta2083MayMDW-ATL1750311651.685
68American Eagle3621MayMIA-ORF1435311651.692
69American Eagle3800MayORD-PHL1130311651.675
70Comair6473MayDFW-JFK1030311651.669
71ExpressJet2714MayBWI-EWR1755311651.6103
Notes: 

* Includes canceled and diverted flights

** For flights late more than 30 minutes only.  Excludes canceled and diverted flights

Source: 

Bureau of Transportation Statistics, Airline On-Time Data