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September 2012 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)**
1American2374SepDFW-ORD2035171376.4773
2SkyWest5611SepMRY-SFO1159302273.33118
3SkyWest6273SepMFR-SFO1224302273.3390
4SkyWest6263SepFAT-SFO1107292172.4194
5SkyWest6294SepSFO-SBA1238292172.4195
6SkyWest5471SepRDD-SFO1824292172.4170
7American1445SepORD-LAX1510302170.0089
8SkyWest5503SepMRY-SFO921302170.0090
9SkyWest5452SepMOD-SFO1009292068.9778
10SkyWest6293SepSFO-ACV1802251768.0076
11American1024SepDFW-OKC1910281967.8657
12American1675SepMIA-SJU2010302066.6762
13American1554SepDFW-EWR1140302066.6782
14SkyWest5490SepPSP-SFO1013302066.6783
15SkyWest5422SepOTH-SFO1838302066.6779
16SkyWest5333SepSFO-MOD1425302066.6791
17SkyWest5470SepSFO-SMF1610302066.6784
18SkyWest6238SepACV-SFO1240302066.6780
19SkyWest5362SepSBA-LAX1424241666.6788
20Southwest1890SepDEN-SFO825271866.6787
21Southwest1994SepSNA-SFO815241666.6759
22American1658SepDFW-DAY2005251664.0080
23American1516SepDFW-MKE1855251664.0075
24SkyWest6293SepACV-SFO1940251664.0087
25SkyWest5317SepSFO-CEC1558251664.0070
26SkyWest5323SepCEC-SFO1457251664.0095
27American2241SepMIA-ORD2115221463.6487
28American1812SepDFW-SDF2015301963.3390
29American1875SepEWR-DFW1655301963.3396
30American932SepMIA-EWR1325301963.33100
31American889SepMIA-SFO1555301963.3379
32SkyWest6329SepACV-SFO839301963.33104
33SkyWest5333SepCEC-SFO852301963.33133
34SkyWest5336SepMOD-SFO1532301963.33105
35SkyWest5296SepRDD-SFO1432301963.3381
36SkyWest5640SepSBA-SFO958301963.3378
37SkyWest5293SepSBP-SFO811301963.3381
38SkyWest5293SepSFO-CEC1302301963.3388
39SkyWest6227SepSFO-EUG1252301963.3365
40SkyWest6315SepSFO-MRY1054301963.33118
41SkyWest5349SepSFO-OTH1623301963.3373
42SkyWest5338SepSFO-RDD1307301963.3379
43SkyWest5470SepSMF-SFO1714301963.3379
44American1204SepDFW-RDU1500241562.5088
45American1130SepDFW-SDF1605241562.5085
46American679SepRDU-DFW1920241562.5081
47SkyWest5573SepMFR-SFO1012291862.0785
48SkyWest5498SepRNO-SFO919291862.0781
49Southwest130SepSAN-SFO740291862.0769
50Virgin America935SepLAX-SFO910291862.0783
51American2376SepDFW-ORD1945231460.8779
52American1691SepDFW-SAT2250281760.7164
53Alaska244SepPDX-SFO810301860.0083
54American1726SepDFW-ICT2105301860.0068
55American2471SepDFW-LAX1815301860.0089
56American2471SepLAX-SFO2020301860.0085
57American722SepMIA-DCA1545301860.0069
58American872SepSAN-DFW1345251560.0074
59ExpressJet3810SepGSP-EWR1723201260.0081
60SkyWest6475SepBOI-SFO820251560.0061
61SkyWest6340SepEUG-SFO1450301860.0072
62SkyWest5563SepFAT-SFO931301860.0088
63SkyWest6370SepMFR-SFO757301860.0072
64SkyWest6239SepSAN-SFO942201260.0085
65SkyWest5646SepSBA-SFO1209301860.0078
66SkyWest5314SepSBP-SFO1230301860.0077
67SkyWest6238SepSFO-ACV1100301860.0072
68SkyWest5359SepSFO-CIC1639301860.0074
69SkyWest5427SepSMF-SFO1050301860.0092
70SkyWest5454SepSMF-SFO1224301860.0083
71American1704SepDFW-BWI1700291758.6269
72American2297SepDFW-SFO850291758.6275
73American890SepDFW-TPA1805291758.6283
74SkyWest5654SepACV-SFO1049291758.6291
75SkyWest6197SepBUR-SFO1150291758.6269
76SkyWest5374SepONT-SFO834291758.6294
77SkyWest6286SepSBA-SFO802291758.6284
78Southwest1890SepSFO-LAS1045291758.6288
79American1512SepDFW-PIT1655241458.33106
80ExpressJet4700SepMHT-EWR1745241458.3372
81SkyWest6233SepACV-SFO1419241458.3393
82SkyWest5615SepSBA-SFO1939241458.33100
83Southwest1890SepMCI-BWI1800241458.3382
84SkyWest4771SepLAX-SFO748191157.8946
85American2495SepBWI-DFW1915211257.1495
86American1844SepDFW-ATL2020281657.1463
87American279SepDFW-ANC1525301756.67122
88American829SepDFW-COS2120301756.6765
89American742SepDFW-LGA1610301756.6795
90American881SepDFW-SFO2030301756.6769
91American1842SepLAS-MIA2240301756.6783
92American1391SepMCO-MIA1520301756.6794
93American1882SepMIA-BOS1740301756.6787
94American1334SepMIA-MCO2250301756.6789
95American1824SepMIA-STL2050301756.6767
96American1590SepORD-MIA1840301756.6781
97ExpressJet4543SepALB-EWR1736301756.6787
98SkyWest5512SepBUR-SFO935301756.6781
99SkyWest5309SepOTH-SFO1045301756.6790
100SkyWest5307SepSFO-CIC1227301756.6789
101SkyWest5314SepSFO-RDD1658301756.6771
102SkyWest5454SepSFO-SMF1115301756.6782
103SkyWest5463SepSFO-SMF1337301756.6775
104Southwest372SepSAN-SFO925231356.5280
105American620SepDFW-ORF1845251456.00152
106American842SepDFW-CMH1950251456.0053
107American600SepDFW-PHL1925251456.0080
108American667SepDFW-ABQ2150251456.0062
109SkyWest5317SepCEC-ACV1751251456.0069
110SkyWest5550SepSFO-FAT2125251456.00103
111American1238SepDEN-DFW1605291655.1759
112American1103SepMIA-ORD1930291655.17144
113ExpressJet3265SepEWR-RDU1625291655.1798
114SkyWest5543SepBOI-SFO1130291655.1770
115American736SepDFW-LGA1420201155.0078
116American830SepDFW-IAH1810241354.1779
117American1291SepIND-DFW1910241354.1798
118SkyWest5647SepMFR-SFO1558241354.1779
119Southwest824SepSFO-SAN945241354.1770
120Southwest642SepLAS-SFO825281553.5783
121Alaska220SepSEA-SFO715301653.3382
122American1875SepDFW-AUS2035301653.3384
123American2442SepDFW-DCA1655301653.3367
124American1906SepDFW-EWR1335301653.3384
125American2264SepDFW-MCO1810301653.3364
126American1286SepDFW-RIC1850301653.3366
127American2095SepDFW-SFO1840301653.3363
128American85SepJFK-SFO1530301653.33114
129American267SepLAX-HNL1820301653.33133
130American1382SepMIA-EWR2100301653.3386
131American530SepMIA-JFK1600301653.3383
132American2086SepMIA-JFK1920301653.3377
133American1299SepMIA-SJU1840301653.33110
134American1693SepORD-SFO1435301653.3384
135American1808SepSAN-DFW1220301653.3346
136SkyWest5307SepCIC-SFO1340301653.3398
137SkyWest6400SepEUG-SFO822301653.3377
138SkyWest6379SepMFR-SFO1356301653.3386
139SkyWest5349SepONT-SFO1409301653.3393
140SkyWest6201SepSFO-MFR1029301653.3390
141SkyWest5337SepSFO-ONT1217301653.3391
142Virgin America927SepLAX-SFO1120301653.3368
143American1982SepDFW-BWI1435211152.3895
144American1921SepLAX-SFO715211152.3885
145ExpressJet4195SepEWR-BNA2059231252.17108
146Southwest1890SepLAS-MCI1250231252.1794
147American878SepDFW-EWR1640251352.0085
148American2274SepDFW-OKC2245251352.0065
149American1808SepDFW-PBI1805251352.0072
150American618SepSFO-ORD1755251352.0096
151ExpressJet4511SepROC-EWR1345251352.0066
152SkyWest5359SepCIC-SFO1751251352.0081
153Southwest782SepSFO-LAX1125251352.0052
154American1507SepDFW-ABQ2000271451.8586
155American2444SepSFO-LAX940271451.8587
156American1935SepDFW-ABQ1540291551.7299
157American1598SepDFW-CMH1745291551.7277
158American2467SepDFW-LAX1725291551.72112
159American1091SepDFW-PHX1930291551.7286
160American1067SepDFW-SAT1955291551.7276
161ExpressJet4504SepPIT-EWR1758291551.7272
162SkyWest6336SepRNO-SFO1129291551.7281
163SkyWest6263SepSFO-FAT948291551.7280
164SkyWest5452SepSFO-MOD906291551.7270
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