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August 2015 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)**
1SkyWest6211AugSAT-LAX2026141285.7177
2Virgin America 885AugDAL-LAX1940262076.9283
3Virgin America 942AugSFO-LAX1945262076.9274
4Envoy3271AugASE-DFW1620171376.47101
5SkyWest5655AugBUR-SFO85811872.7388
6SkyWest5367AugSMF-SFO1145282071.4364
7Spirit709AugLAX-DTW2158312270.9783
8Spirit805AugATL-LAS2055312270.9793
9Spirit785AugMCI-LAX2110312270.9752
10SkyWest5659AugDEN-FSD160813969.2370
11SkyWest6433AugSLC-LAX2037292068.9765
12Spirit474AugATL-PHL2147191368.42109
13Alaska464AugSEA-LAX1825312167.7467
14SkyWest5454AugSFO-SMF1040312167.7478
15Spirit942AugTPA-ATL1846312167.7490
16SkyWest2903AugRNO-LAX1917271866.6775
17SkyWest2894AugFAT-LAX1915291965.5290
18Southwest2503AugSMF-LAX2020261765.3875
19Spirit615AugBOS-FLL1745312064.5273
20United1516AugIAH-MIA205614964.2954
21SkyWest5375AugLAX-SBP2225281864.2952
22SkyWest5611AugSEA-LAX173511763.6465
23Virgin America 798AugSEA-LAX1740261661.5463
24Frontier928AugUST-TTN195013861.5472
25Southwest2617AugOAK-LAX1840261661.5449
26Spirit612AugMSP-ORD600311961.2967
27Spirit615AugFLL-TPA2150311961.2988
28Spirit719AugLAS-LAX1955311961.2976
29SkyWest2902AugSJC-LAX1945311961.2958
30Spirit216AugLAX-IAH815311961.2989
31Spirit281AugMSP-IAH2005311961.2979
32Alaska562AugPDX-LAX1830311961.2966
33Southwest2870AugHOU-ATL1810231460.8779
34Southwest1823AugLAX-AUS1815201260.0090
35Southwest377AugLAS-PHX203510660.0061
36Alaska463AugLAX-SEA2200221359.0957
37Envoy3351AugLAX-ASE1245171058.8255
38Spirit474AugATL-PHL201012758.3390
39ExpressJet5061AugLGA-RDU172012758.3359
40Spirit474AugLAX-ATL114812758.3388
41SkyWest2900AugLAX-SJC2155311858.0652
42Spirit382AugDEN-MSP1630311858.0681
43JetBlue1451AugBOS-MCO1930311858.0676
44SkyWest6380AugSBA-SFO844311858.0670
45Southwest1823AugOAK-LAX1620261557.6977
46Delta2776AugSFO-LAX1500261557.6962
47United1942AugSFO-LAX195414857.1445
48SkyWest4447AugSJC-LAX203114857.1454
49SkyWest5611AugSEA-LAX183014857.1477
50Delta2286AugLAX-SMF151014857.1470
51American 606AugPHX-ONT225016956.2554
52SkyWest4831AugPHX-LAX1850201155.0063
53Southwest1451AugPHX-LAX1855201155.0049
54American 1661AugIAD-MIA1725311754.8455
55JetBlue170AugFLL-BOS1532311754.8486
56Spirit567AugDTW-ATL1912311754.8499
57Spirit464AugFLL-ORD2145311754.8480
58Spirit906AugOAK-IAH1325311754.84123
59SkyWest2887AugLAX-MRY2105311754.8473
60SkyWest5435AugONT-SFO845311754.8477
61United1196AugORD-DSM191011654.55113
62Southwest316AugMCO-MDW160011654.5591
63JetBlue1089AugBOS-DCA1920261453.8565
64Delta670AugPDX-LAX1909261453.8552
65Envoy3248AugCMH-LGA1738261453.8581
66Envoy3605AugLGA-BNA1800261453.8557
67SkyWest5626AugFSD-DEN191013753.8568
68SkyWest4705AugOAK-LAX2110261453.8563
69Virgin America 948AugSFO-LAX2045261453.8560
70SkyWest5265AugIAH-BHM191015853.33111
71Southwest4484AugLAX-SFO905301653.3362
72SkyWest6209AugJAX-ORD165217952.9491
73American 1955AugTPA-LAX1905251352.0068
74Virgin America 943AugLAX-SFO2100251352.0059
75United1166AugIAH-LAX2058271451.8560
76Southwest2060AugBWI-TPA1840271451.8571
77American 640AugPHX-LAX2005291551.7267
78Southwest60AugHOU-DAL2100291551.7268
79American 1449AugMCO-MIA1630311651.61115
80Alaska474AugSEA-LAX1735311651.6169
81JetBlue2067AugHPN-PBI1831311651.6195
82JetBlue484AugMCO-JFK1906311651.6194
83JetBlue122AugPBI-BOS1930311651.61101
84Spirit403AugATL-FLL1921311651.6194
85Spirit941AugATL-TPA1642311651.6171
86Spirit369AugBWI-ORD2045311651.6196
87Spirit330AugDFW-CLE2028311651.6198
88Spirit191AugDTW-MSP1513311651.6195
89Spirit298AugLAS-IAH3311651.6187
90Spirit612AugLAS-MSP5311651.6163
91Spirit381AugMSP-DEN1444311651.6180
92SkyWest6263AugFAT-SFO905311651.6178
93SkyWest6369AugTUS-SFO735311651.6188
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