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August 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)**
1Mesa1058AugHNL-KOA1800121191.6779
2Mesa1059AugKOA-HNL1900121191.6781
3SkyWest6359AugPDX-SFO716131184.6256
4Mesa1052AugHNL-LIH1600121083.33101
5Mesa1053AugLIH-HNL1700121083.33104
6ExpressJet3833AugATL-EWR155111981.82158
7American1808AugDFW-PBI180510880.0063
8Delta1478AugBHM-ATL171511872.73135
9Southwest2857AugBWI-ATL160011872.7365
10Southwest1890AugMCI-BWI1800181372.2293
11Southwest642AugSFO-SNA1040181372.2270
12Southwest642AugLAS-SFO825211571.4383
13SkyWest5435AugCEC-SFO851312270.97102
14ExpressJet5889AugDTW-ORD181310770.00128
15ExpressJet4930AugMSP-EWR152813969.2384
16ExpressJet4299AugDCA-EWR1745292068.97110
17ExpressJet4195AugALB-EWR1750191368.4295
18ExpressJet3837AugPHL-EWR1805221568.18109
19ExpressJet5928AugCLT-ORD185212866.67127
20Southwest206AugPHX-DEN183512866.6757
21Southwest1890AugSFO-LAS1045201365.0087
22Alaska220AugSEA-SFO720312064.5286
23ExpressJet4129AugDCA-EWR1429312064.5290
24SkyWest6353AugSBA-SFO1215312064.5281
25American890AugDFW-TPA180511763.6478
26ExpressJet4370AugCHS-EWR170311763.64100
27ExpressJet5130AugHPN-ATL190011763.64119
28Southwest717AugATL-MDW192511763.6454
29Southwest363AugLAS-BWI162011763.6457
30United248AugORD-DTW184611763.6467
31ExpressJet4372AugDCA-EWR1630271762.96107
32ExpressJet4312AugEWR-DCA2000271762.9678
33SkyWest5392AugONT-SFO1130271762.9660
34SkyWest6294AugRDD-SFO1729271762.9674
35ExpressJet4333AugMHT-EWR1635161062.50104
36Mesa1028AugHNL-OGG1700291862.0788
37Southwest130AugSAN-SFO740291862.0776
38Delta2286AugATL-HSV203513861.5487
39ExpressJet4460AugEWR-GSP204513861.5484
40ExpressJet4425AugEWR-PVD151313861.5476
41ExpressJet5340AugROA-ATL182513861.5495
42ExpressJet4533AugEWR-MHT2025311961.2969
43Mesa1018AugHNL-OGG1900311961.2989
44SkyWest6329AugACV-SFO833311961.2984
45SkyWest6263AugFAT-SFO1109311961.29104
46SkyWest6332AugMRY-SFO926311961.2976
47SkyWest5314AugSFO-CEC1252311961.2991
48SkyWest5572AugSFO-SBA1029311961.2977
49ExpressJet4140AugEWR-ROC1343181161.1149
50American145AugJFK-SAN1735201260.00150
51ExpressJet5116AugCAE-ATL184510660.0075
52ExpressJet4642AugEWR-CHS201515960.0072
53ExpressJet3834AugEWR-CLT2103301860.0090
54ExpressJet6180AugORD-DTW151710660.00119
55Southwest656AugBWI-CLE210010660.0067
56Southwest441AugBWI-SDF212010660.0073
57Southwest2186AugSAN-TUS1330201260.0073
58American Eagle3570AugMIA-ATL1710271659.2682
59ExpressJet3258AugEWR-BUF1925271659.2697
60ExpressJet4299AugEWR-DCA1622271659.26102
61ExpressJet3262AugEWR-PHL1622271659.26132
62SkyWest5624AugSFO-RDD1604271659.2670
63Southwest520AugBWI-BDL2150271659.2665
64Southwest824AugSFO-SAN945271659.2682
65ExpressJet4191AugBUF-EWR161512758.33110
66SkyWest5187AugIAH-DFW173012758.3357
67SkyWest5402AugSFO-SMF2007311858.0687
68SkyWest5295AugCEC-SFO1448311858.0695
69SkyWest5452AugMOD-SFO1027311858.0672
70SkyWest5324AugBFL-SFO1949311858.0680
71SkyWest5622AugRDD-SFO1409311858.0684
72SkyWest6234AugACV-SFO1739311858.0674
73SkyWest6307AugMFR-SFO803311858.0666
74Virgin America901AugLAS-SFO920311858.0667
75ExpressJet4472AugPIT-EWR1520211257.1468
76Southwest117AugMDW-DTW2005281657.1478
77ExpressJet4272AugEWR-RIC1656301756.6799
78SkyWest5377AugBUR-DEN1510301756.6768
79SkyWest5312AugSMF-SFO1156301756.6769
80ExpressJet5602AugATL-LFT161616956.2576
81ExpressJet4411AugEWR-MEM1643251456.0078
82United1680AugEWR-MIA2025251456.0070
83Alaska42AugBET-ANC844271555.56103
84ExpressJet4134AugIAD-EWR1447271555.56109
85ExpressJet4411AugMEM-EWR1919271555.5682
86Mesa1022AugHNL-LIH1830181055.5686
87SkyWest5359AugOTH-SFO957271555.5695
88SkyWest6216AugPSP-SFO729271555.5671
89SkyWest5368AugSBP-SFO910271555.5672
90Southwest365AugEWR-HOU1555271555.56114
91Southwest1890AugLAS-MCI1250181055.56101
92Southwest1002AugSFO-SAN1345181055.5683
93United1539AugLAX-EWR2145181055.5668
94United1529AugSEA-SFO921181055.5665
95ExpressJet4092AugDAY-EWR1837291655.1778
96ExpressJet3814AugGSO-EWR1446291655.1787
97SkyWest5349AugMFR-SFO1931291655.1776
98Southwest596AugLAX-SFO815291655.1778
99Southwest3227AugSFO-PHX1010291655.1771
100Southwest3227AugPHX-ABQ1240201155.0066
101Southwest722AugSFO-LAX1145201155.0072
102Alaska234AugPDX-SFO810311754.8495
103Alaska231AugSFO-SEA2020311754.8490
104American1464AugDFW-TUL2055311754.84121
105ExpressJet4372AugEWR-DCA1451311754.84113
106ExpressJet4702AugEWR-GSO1629311754.8496
107Mesa1007AugHNL-KOA1930311754.84107
108Mesa1025AugKOA-HNL1450311754.8476
109SkyWest5544AugMRY-SFO1153311754.8481
110SkyWest5478AugMRY-SFO1422311754.8477
111SkyWest5314AugONT-SFO838311754.8490
112SkyWest6416AugSBA-SFO806311754.8483
113SkyWest6263AugSFO-FAT948311754.8487
114SkyWest5495AugSFO-MFR1420311754.8466
115Southwest1890AugDEN-SFO825311754.8486
116AirTran1427AugATL-PHL180511654.5588
117AirTran21AugCLT-ATL203011654.5593
118AirTran1094AugFLL-ATL173011654.5571
119American1944AugSJU-JFK175511654.55104
120Delta1478AugATL-BHM163611654.55162
121Delta2334AugATL-ORD200911654.5596
122ExpressJet5294AugATL-LIT175611654.55111
123ExpressJet4326AugCLT-EWR172611654.55132
124ExpressJet4136AugEWR-BUF141311654.55109
125ExpressJet4617AugEWR-SYR212911654.55101
126Southwest1260AugATL-BWI201511654.5569
127Southwest389AugBWI-ECP154511654.5558
128Southwest2701AugHOU-LAS144011654.5553
129Southwest1015AugMDW-IAD175511654.55131
130Southwest738AugMDW-MCO194011654.5554
131Southwest644AugMDW-SEA172011654.5585
132United921AugEWR-SFO175911654.5576
133United1508AugLAS-IAH184011654.5563
134United445AugSNA-SFO830221254.5597
135ExpressJet4642AugBUF-EWR1722241354.1791
136ExpressJet5130AugATL-HPN155113753.85106
137ExpressJet3834AugEWR-DTW204913753.8590
138Frontier187AugDEN-OKC195513753.8550
139Mesa3788AugCHS-ORD182513753.8573
140SkyWest5170AugIAD-IAH145513753.8551
141SkyWest5171AugORF-IAH171613753.8555
142SkyWest5445AugSFO-MSO1247261453.8566
143Southwest2857AugATL-MDW182513753.8573
144Southwest2620AugMCO-BWI174013753.8554
145United431AugDEN-TPA174713753.8551
146United1652AugFLL-EWR140313753.85105
147United335AugLAX-MCO225513753.8564
148Mesa1010AugHNL-OGG1500281553.57110
149Mesa1005AugHNL-LIH1500301653.3371
150Mesa1028AugLIH-HNL1600301653.3374
151United104AugFLL-EWR154515853.33123
152ExpressJet4610AugEWR-ALB1605191052.6399
153JetBlue631AugJFK-LAX2255191052.6388
154Southwest1087AugLAS-ABQ2105191052.6367
155JetBlue595AugHPN-MCO1840251352.0088
156Alaska41AugANC-BET640271451.85134
157ExpressJet4536AugEWR-CVG1939271451.85119
158SkyWest4771AugLAX-SFO749271451.8551
159Mesa1019AugOGG-HNL1800291551.7290
160SkyWest5529AugACV-SFO1600291551.7298
161SkyWest5353AugSFO-MFR1740291551.7274
162Southwest372AugSAN-SFO925291551.7291
163United10AugORD-PHL1900291551.7292
164Delta1854AugLGA-FLL1945311651.6175
165ExpressJet4131AugEWR-RIC1916311651.6184
166Mesa1026AugHNL-KOA1350311651.6178
167Mesa1016AugHNL-OGG1300311651.6181
168Mesa1005AugOGG-HNL1400311651.6181
169SkyWest6368AugACV-SFO1240311651.6193
170SkyWest6326AugMFR-SFO1609311651.6182
171SkyWest5337AugMOD-SFO1543311651.6184
172SkyWest5640AugSBA-SFO1000311651.6184
173SkyWest5452AugSFO-MOD924311651.6175
174SkyWest5478AugSFO-MRY1313311651.6174
175SkyWest5622AugSFO-RDD1243311651.6189
176SkyWest6450AugSFO-SMF1542311651.6178
177SkyWest4611AugSLC-SFO830311651.6167
178Southwest518AugLAX-SFO1000311651.6171
179Virgin America935AugLAX-SFO910311651.6188
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