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August 2016 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)**
1Frontier1740AugSFO-MCO2320131292.3173
2United662AugSAN-SFO810161381.2562
3SkyWest5339AugTUS-SFO740312477.4283
4Frontier504AugDEN-LGA1605312477.4267
5SkyWest5154AugSMF-SFO900312477.4289
6Southwest2462AugSMF-SEA1915221777.2778
7SkyWest5196AugPSP-SFO820292275.8698
8SkyWest5543AugBOI-SFO1030312374.1972
9Southwest460AugLAX-DEN1310231773.9175
10SkyWest5655AugBUR-SFO940251872.0096
11Frontier181AugOMA-DEN1845211571.4361
12SkyWest5723AugFAT-SFO905312270.9793
13American241AugORD-MIA1320312270.97133
14SkyWest4461AugSLC-SFO840302170.0064
15ExpressJet5147AugRDU-LGA1905231669.5772
16ExpressJet4081AugDCA-EWR213013969.23137
17Frontier1285AugORD-DEN203513969.2377
18SkyWest5982AugSBA-SFO800312167.7486
19American1612AugMIA-ORD1759312167.7486
20United146AugORD-MSN192412866.6798
21JetBlue1234AugSJU-MCO2155211466.6785
22Delta2785AugJFK-RDU1930211466.67190
23JetBlue1636AugLGB-SFO1149271866.6756
24SkyWest5876AugFAT-SFO1211291965.5266
25Alaska222AugSEA-SFO710291965.5274
26American207AugMIA-DFW1825261765.38127
27Delta2653AugJFK-DCA2100261765.38148
28SkyWest5026AugSMF-SFO1135312064.5276
29American2225AugORD-LAX1825312064.52130
30JetBlue828AugMCO-EWR1510312064.52111
31JetBlue428AugMCO-EWR2120312064.52102
32United322AugSNA-SFO800312064.5285
33United1165AugEWR-LAX2059312064.52102
34American1809AugCLT-MSY1900221463.6475
35Southwest155AugLAX-MCI1910221463.6481
36SkyWest4461AugSFO-SLC1029301963.3359
37American2424AugMIA-AUS2135191263.1675
38Southwest1181AugPHX-SFO835191263.1654
39JetBlue1951AugBOS-MCO2135271762.9681
40Virgin America1935AugLAX-SFO905271762.9671
41United213AugSFO-EWR1540271762.96113
42Southwest3087AugSMF-LAX2045271762.9658
43ExpressJet4428AugHPN-ORD1729271762.96118
44ExpressJet4368AugSTL-EWR181013861.54119
45JetBlue1451AugBOS-MCO1735261661.5486
46JetBlue1295AugJFK-AUS211613861.5470
47JetBlue299AugLGA-MCO1744311961.2994
48JetBlue227AugEWR-MCO1840311961.29113
49Frontier667AugDEN-SFO2104311961.2964
50JetBlue6AugFLL-EWR2045311961.2987
51Spirit414AugBWI-BOS1842311961.29103
52SkyWest5809AugSNA-SFO1005231460.8775
53ExpressJet5407AugMDW-MSP1100201260.0078
54ExpressJet4308AugEWR-SBN204515960.0060
55ExpressJet4222AugEWR-JAX210015960.0056
56American2340AugDCA-DFW1828301860.0083
57ExpressJet5407AugMSP-MDW854201260.0081
58American2601AugRDU-ORD1800271659.2674
59Virgin America953AugSAN-SFO925271659.2671
60Southwest1376AugDAL-MEM2110221359.0972
61American1379AugJFK-SJU1950221359.0998
62American936AugJFK-STT915221359.09111
63Southwest2617AugSTL-LAX2030171058.8289
64United1840AugDEN-SFO838291758.6268
65ExpressJet4106AugEWR-CVG210012758.3390
66JetBlue1298AugDEN-JFK130712758.3387
67United1125AugIAH-EWR172212758.3398
68Alaska223AugSFO-SEA2035311858.0673
69Delta2125AugMCO-JFK1710311858.06131
70Frontier509AugLGA-DEN2245311858.0673
71JetBlue1271AugLGA-FLL1930311858.0697
72JetBlue2008AugFLL-PIT2025311858.06104
73JetBlue283AugJFK-MCO1905311858.06131
74JetBlue499AugLGA-MCO2130311858.0689
75JetBlue698AugMCO-LGA1800311858.0671
76SkyWest5332AugRNO-SFO1020311858.0689
77SkyWest5347AugSFO-FAT1040311858.0678
78Southwest1936AugLAS-SFO910311858.0678
79United1456AugSFO-EWR1445311858.0675
80American2514AugORD-TUS2015191157.8973
81ExpressJet5285AugLGA-SAV2100191157.8963
82American2634AugDEN-DFW1938261557.6984
83Delta350AugRDU-JFK1823261557.69130
84SkyWest5705AugORD-COS160014857.1495
85United1958AugIAH-LGA1545281657.1479
86United244AugORD-LGA150014857.1476
87United275AugEWR-LAX1829281657.1461
88Virgin America927AugLAX-SFO1005301756.6787
89ExpressJet5121AugRDU-CLE2010231356.52158
90ExpressJet5209AugCLT-LGA1800231356.5283
91ExpressJet5293AugLGA-ORF1855231356.52102
92JetBlue497AugBOS-SEA2050231356.5271
93Southwest1375AugDAL-SAT1805231356.5257
94Southwest2680AugDEN-DAL1935231356.5297
95Delta862AugMIA-LAX193916956.2584
96SkyWest5613AugSFO-BFL123416956.2588
97American1110AugORD-DCA2100181055.5668
98American2656AugORD-RNO2030271555.5671
99American85AugJFK-SFO2000271555.56103
100Delta1906AugBWI-DTW1750271555.56127
101ExpressJet5563AugDTW-ORD1956181055.56110
102ExpressJet5563AugORD-DTW2057181055.5696
103Frontier1285AugORD-DEN1959181055.56104
104Frontier665AugDEN-SFO1850181055.56110
105JetBlue1118AugCLT-JFK1950271555.56101
106JetBlue2801AugJFK-FLL2106271555.56110
107SkyWest5315AugSCE-ORD1742181055.5682
108Southwest1468AugPHX-SEA1830271555.5682
109Southwest211AugDEN-LAX2020271555.5677
110United1264AugEWR-ORD1646271555.5684
111United292AugSFO-MCO1310271555.56132
112ExpressJet4312AugEWR-DCA1929291655.17123
113ExpressJet5447AugPWM-LGA1835201155.00256
114Alaska264AugPDX-SFO710311754.8468
115American1019AugDFW-COS1910311754.84108
116American1284AugMIA-ORD1520311754.8485
117American1328AugMIA-EWR2148311754.84140
118American1333AugPHL-ORD1750311754.8485
119American1425AugDFW-MIA1642311754.8496
120American1703AugSFO-DFW1128311754.8490
121American1721AugCLT-EWR1805311754.8491
122American1806AugCLT-BOS1756311754.8472
123American2254AugMIA-JFK1725311754.84101
124American2452AugORD-LAX2025311754.8481
125American2568AugDFW-ABQ1900311754.8469
126Frontier664AugSFO-DEN1135311754.8479
127JetBlue97AugJFK-DEN2031311754.8461
128JetBlue971AugLGA-FLL1629311754.84125
129SkyWest5637AugSUN-SFO805311754.84128
130Spirit1009AugDTW-PHL1542311754.8479
131Spirit1009AugPHL-FLL1801311754.8477
132Spirit1027AugBOS-BWI2055311754.84107
133Spirit347AugLGA-MYR1848311754.84100
134Spirit350AugMYR-ACY2124311754.8497
135Spirit710AugFLL-LGA2006311754.8489
136United411AugORD-LAX1933311754.84147
137United535AugSFO-EWR1110311754.84121
138United639AugORD-MCO1750311754.84104
139Virgin America1178AugSFO-EWR1440311754.8469
140American2317AugMIA-STX1836221254.5573
141JetBlue105AugJFK-ORD2040221254.5599
142Southwest1471AugDEN-OKC1730221254.5565
143Southwest2338AugMSP-BWI1735221254.5570
144Southwest3143AugDAL-LAX1920221254.5571
145Delta2543AugJFK-TPA1925261453.85128
146ExpressJet3742AugSTL-EWR135113753.85133
147ExpressJet5604AugSAV-LGA1751261453.85240
148Frontier1194AugSFO-CVG222513753.8549
149Frontier1245AugORD-SFO80013753.85106
150Frontier157AugDSM-DEN200513753.8568
151Frontier177AugPHL-DEN165513753.8550
152American2397AugDFW-SFO2020281553.5759
153American386AugJAX-DFW1923281553.5794
154American563AugDCA-PHX1715281553.57140
155American1412AugDFW-MIA1515301653.3372
156United665AugEWR-LAS202515853.33106
157American2315AugMSY-MIA1750191052.6385
158American1300AugMSY-DFW1725231252.17103
159American1316AugORD-SMF2005231252.1784
160Delta1910AugEWR-ATL1915231252.17116
161Delta2760AugLAX-SFO1100231252.1756
162Delta279AugLGA-DEN1856231252.17113
163Southwest1989AugDAL-ELP2125231252.1770
164Southwest5776AugMDW-LGA1530231252.17101
165Delta401AugTPA-JFK1549251352.00156
166Southwest1603AugOAK-LAX2000251352.0057
167American2167AugDCA-LGA1800271451.85140
168ExpressJet5392AugLGA-BHM2040271451.8595
169JetBlue902AugFLL-JFK1724271451.85118
170Southwest1520AugLAX-TUS2105271451.8580
171Southwest1545AugLAX-OAK2210271451.8562
172Southwest2570AugLAX-SFO1240271451.8592
173Southwest343AugMDW-EWR1720271451.8590
174United690AugRDU-EWR1743271451.85110
175ExpressJet3895AugEWR-BTV2055291551.7253
176American1407AugORD-MIA1507311651.6190
177American1954AugCLT-LGA2041311651.6183
178American2438AugLAX-SFO1110311651.6174
179American2577AugMIA-TPA2153311651.6181
180American312AugMIA-JFK2009311651.61233
181American355AugLGA-ORD1737311651.6183
182American591AugDFW-PHL1830311651.6182
183American85AugBOS-JFK1740311651.61163
184JetBlue1070AugFLL-BOS2055311651.6175
185JetBlue1198AugMCO-LGA1615311651.61110
186JetBlue188AugSFO-LAS1400311651.6170
187JetBlue478AugJAX-JFK1910311651.6194
188JetBlue672AugFLL-LGA1856311651.6191
189JetBlue890AugDCA-BOS1850311651.6188
190SkyWest5055AugSFO-PSC1137311651.6174
191Spirit315AugTPA-IAH1905311651.61121
192Spirit347AugDTW-LGA1613311651.61127
193Spirit782AugBWI-DTW1719311651.61148
194United670AugORD-BOS2120311651.6181
195United834AugLAS-SFO753311651.6166
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