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August 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)**
1Alaska308AugSEA-SFO810211990.575
2Alaska303AugSFO-SEA1105211990.577
3SkyWest6824AugSFO-RDD1536201890.094
4Delta2357AugATL-SDF1854161381.3108
5SkyWest6505AugLMT-SFO838312580.779
6SkyWest6256AugSFO-FAT1022312580.784
7SkyWest6099AugACV-SFO848312477.4101
8SkyWest6256AugFAT-SFO1147312477.485
9SkyWest6909AugOTH-SFO1325312477.4102
10SkyWest6336AugRNO-SFO930282175.097
11SkyWest6058AugACV-SFO1249312374.295
12SkyWest6673AugMRY-SFO929312374.2101
13SkyWest6909AugSFO-OTH1114312374.2100
14SkyWest6846AugSMF-SFO1152312374.297
15SkyWest4678AugSFO-LAX2005302273.356
16Southwest1505AugDEN-SFO900261973.170
17SkyWest6840AugSBA-SFO1036282071.477
18SkyWest6687AugMRY-SFO1145312271.088
19SkyWest6836AugSBA-SFO843312271.084
20SkyWest6829AugSBP-SFO953312271.078
21SkyWest6580AugSFO-MFR1114312271.084
22SkyWest6747AugSMF-SFO1045312271.093
23Mesa2966AugLAS-SFO930312167.773
24SkyWest6652AugMOD-SFO1039312167.785
25SkyWest6678AugMRY-SFO1409312167.791
26SkyWest6504AugOTH-SFO855312167.797
27SkyWest6164AugOTH-SFO1711312167.7104
28SkyWest6264AugSFO-FAT1254312167.792
29SkyWest6678AugSFO-MRY1305312167.789
30SkyWest6164AugSFO-OTH1501312167.796
31SkyWest6149AugSFO-SBP1159312167.793
32SkyWest6846AugSFO-SMF1044312167.798
33Comair6335AugMEM-OKC1920151066.753
34Southwest533AugSAN-SJC200012866.777
35Southwest444AugSFO-SNA113512866.7105
36Southwest846AugSAN-SFO940291965.574
37SkyWest6181AugCEC-SFO918312064.5101
38SkyWest6192AugCIC-SFO1013312064.595
39SkyWest6134AugONT-SFO1000312064.574
40SkyWest6841AugSBA-SFO1237312064.587
41SkyWest6149AugSBP-SFO1337312064.588
42SkyWest6058AugSFO-ACV1058312064.5105
43SkyWest6841AugSFO-SBA1040312064.577
44Atlantic Southeast5515AugATL-BTR192914964.3103
45SkyWest6400AugEUG-SFO836301963.362
46SkyWest6597AugSFO-RNO1834241562.561
47Southwest1281AugSFO-LAS1115161062.569
48Southwest3572AugDAL-BHM191513861.569
49American1928AugLAX-SFO950311961.376
50SkyWest6951AugACV-SFO1053311961.389
51SkyWest6264AugFAT-SFO1415311961.3107
52SkyWest6580AugMFR-SFO1310311961.381
53SkyWest6508AugAUS-SFO1657231460.977
54SkyWest6597AugRNO-SFO1954231460.961
55United671AugPHX-SFO715231460.963
56SkyWest6165AugSNA-SFO1025281760.766
57SkyWest6296AugSLC-DEN142510660.081
58SkyWest6181AugSFO-PHX1258241458.374
59Southwest151AugDEN-BWI162012758.3131
60Southwest616AugLAX-ABQ121012758.374
61Southwest2111AugMSY-BNA120012758.361
62Southwest2265AugOAK-LAS114012758.365
63Southwest365AugSJC-LAX213512758.371
64Southwest618AugSMF-BUR152512758.389
65Southwest531AugSNA-SMF133512758.392
66SkyWest6575AugMFR-SFO1025311858.1103
67SkyWest6173AugSFO-BFL1502311858.180
68SkyWest6193AugSFO-CIC1229311858.177
69SkyWest6687AugSFO-MRY1039311858.187
70SkyWest6737AugSFO-SMF1252311858.190
71ExpressJet3062AugATL-EWR190014857.195
72Southwest1338AugLAX-SFO84514857.161
73Delta1971AugDTW-ANC192016956.353
74SkyWest6255AugBUR-SFO856311754.873
75SkyWest6350AugONT-SFO1404311754.876
76SkyWest6596AugSFO-MFR1314311754.871
77SkyWest6350AugSFO-ONT1213311754.881
78SkyWest6822AugSFO-RDD1159311754.892
79United954AugLAX-SFO1035311754.860
80United827AugSEA-SFO910311754.859
81Comair6494AugOKC-ATL174011654.666
82Atlantic Southeast5496AugCHO-ATL171513753.948
83Comair6326AugMCI-LGA184913753.974
84Comair6575AugSDF-MSP132713753.973
85SkyWest4781AugSDF-ATL191513753.9103
86Southwest2189AugLAX-SFO92017952.991
87American936AugMIA-BOS2155231252.276
88American2047AugMIA-STL2015231252.283
89Atlantic Southeast7124AugORD-SAV1420231252.297
90JetBlue1014AugJFK-BOS1724271451.9102
91Alaska305AugSFO-SEA1300311651.658
92American2574AugMIA-ATL1850311651.693
93JetBlue130AugJFK-BUF1830311651.6103
94SkyWest6568AugMFR-SFO718311651.672
95SkyWest6616AugRNO-SFO1704311651.682
96SkyWest6961AugSFO-ACV1523311651.686
97SkyWest6183AugSFO-CEC1141311651.676
98SkyWest6661AugSFO-MOD1536311651.687
99SkyWest6616AugSFO-RNO1544311651.676
100SkyWest6598AugSMF-SFO827311651.666
101SkyWest6737AugSMF-SFO1409311651.688
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