[{"cancellation_rate_pct":"1.0","carrier_code":"9E","carrier_delay_pct":"25.1","carrier_name":"Endeavor Air","carrier_type":"Regional Operator","common_strengths":"Wholly owned Delta subsidiary achieving industry-leading regional completion factor and low cancellation rate","common_weaknesses":"Vulnerable to New York area airspace congestion when operating into LaGuardia and JFK","complaints_per_100k":"1.5","id":"endeavor-air","late_aircraft_delay_pct":"45.1","mishandled_baggage_per_1k":"4.5","nas_delay_pct":"24.2","ontime_arrival_pct":"82.1","primary_hubs":"ATL, DTW, MSP, LGA, JFK","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"5.4"},{"cancellation_rate_pct":"0.9","carrier_code":"HA","carrier_delay_pct":"38.0","carrier_name":"Hawaiian Airlines","carrier_type":"Network Legacy","common_strengths":"Mild Hawaiian year-round weather eliminates deicing and snow delays, very low cancellation rate and low passenger complaint volume","common_weaknesses":"Inter-island high-frequency shuttles experience late-arriving aircraft propagation when morning flights slip","complaints_per_100k":"1.8","id":"hawaiian-airlines","late_aircraft_delay_pct":"45.2","mishandled_baggage_per_1k":"3.9","nas_delay_pct":"14.5","ontime_arrival_pct":"81.5","primary_hubs":"HNL, OGG","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"2.1"},{"cancellation_rate_pct":"1.2","carrier_code":"DL","carrier_delay_pct":"26.5","carrier_name":"Delta Air Lines Network","carrier_type":"Network Legacy","common_strengths":"Top tier crew dispatch buffers, massive Atlanta and Detroit hub flow control, robust fleet spare aircraft readiness","common_weaknesses":"High late-arriving aircraft propagation once severe weather impacts Atlanta or Northeast corridor hubs","complaints_per_100k":"2.1","id":"delta-air-lines","late_aircraft_delay_pct":"44.3","mishandled_baggage_per_1k":"4.8","nas_delay_pct":"23.2","ontime_arrival_pct":"80.9","primary_hubs":"ATL, DTW, MSP, SLC, JFK, LGA, SEA, BOS","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"5.8"},{"cancellation_rate_pct":"1.5","carrier_code":"OO","carrier_delay_pct":"27.8","carrier_name":"SkyWest Airlines","carrier_type":"Regional Operator","common_strengths":"Largest regional fleet operator in North America, disciplined maintenance scheduling, strong operational integration with major partners","common_weaknesses":"Mountain West winter weather delays at Denver and Salt Lake City, regional jet overhead bin space limitations","complaints_per_100k":"1.9","id":"skywest-airlines","late_aircraft_delay_pct":"41.5","mishandled_baggage_per_1k":"6.4","nas_delay_pct":"23.0","ontime_arrival_pct":"80.2","primary_hubs":"DEN, SLC, ORD, MSP, DTW","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"7.5"},{"cancellation_rate_pct":"1.4","carrier_code":"MQ","carrier_delay_pct":"26.2","carrier_name":"Envoy Air","carrier_type":"Regional Operator","common_strengths":"Wholly owned American Airlines subsidiary with high mainline terminal integration and streamlined passenger rebooking","common_weaknesses":"High exposure to Dallas-Fort Worth terminal ground stops and ramp congestion","complaints_per_100k":"1.7","id":"envoy-air","late_aircraft_delay_pct":"43.9","mishandled_baggage_per_1k":"6.9","nas_delay_pct":"22.8","ontime_arrival_pct":"79.5","primary_hubs":"DFW, ORD, MIA","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.9"},{"cancellation_rate_pct":"1.4","carrier_code":"AS","carrier_delay_pct":"28.1","carrier_name":"Alaska Airlines Network","carrier_type":"Network Legacy","common_strengths":"Excellent West Coast deicing operations, low congestion at Seattle and Anchorage relative to East Coast hubs, prompt customer care","common_weaknesses":"Vulnerability to Pacific Northwest winter storms and dense morning fog at Seattle-Tacoma","complaints_per_100k":"2.4","id":"alaska-airlines","late_aircraft_delay_pct":"43.1","mishandled_baggage_per_1k":"5.9","nas_delay_pct":"22.4","ontime_arrival_pct":"79.2","primary_hubs":"SEA, ANC, PDX, SFO, LAX","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.2"},{"cancellation_rate_pct":"2.1","carrier_code":"NK","carrier_delay_pct":"30.5","carrier_name":"Spirit Airlines","carrier_type":"Ultra Low-Cost","common_strengths":"Low unbundled base fares, modern fuel-efficient Airbus A320neo fleet, solid on-time turn efficiency in clear weather","common_weaknesses":"Limited interline rebooking agreements during irregular operations, higher customer complaint rate regarding fee transparency","complaints_per_100k":"7.8","id":"spirit-airlines","late_aircraft_delay_pct":"40.5","mishandled_baggage_per_1k":"5.1","nas_delay_pct":"22.8","ontime_arrival_pct":"78.8","primary_hubs":"FLL, MCO, LAS, DTW, DFW","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.0"},{"cancellation_rate_pct":"1.5","carrier_code":"UA","carrier_delay_pct":"29.4","carrier_name":"United Airlines Network","carrier_type":"Network Legacy","common_strengths":"Dense multi-hub route alternatives, advanced baggage tracking in mobile app, rapid rebooking engine","common_weaknesses":"Heavy exposure to Newark and Chicago O'Hare National Aviation System ground delay programs","complaints_per_100k":"3.8","id":"united-airlines","late_aircraft_delay_pct":"38.8","mishandled_baggage_per_1k":"6.1","nas_delay_pct":"25.1","ontime_arrival_pct":"78.8","primary_hubs":"ORD, IAH, EWR, DEN, SFO, IAD, LAX","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.5"},{"cancellation_rate_pct":"1.7","carrier_code":"YX","carrier_delay_pct":"28.5","carrier_name":"Republic Airways","carrier_type":"Regional Operator","common_strengths":"Modern Embraer 170/175 dual-class cabin comfort with full-size overhead bins, strong midwestern hub presence","common_weaknesses":"Heavy operations in Northeast corridor airports with severe FAA air traffic control flow restrictions","complaints_per_100k":"1.6","id":"republic-airways","late_aircraft_delay_pct":"37.6","mishandled_baggage_per_1k":"5.7","nas_delay_pct":"26.5","ontime_arrival_pct":"78.4","primary_hubs":"ORD, IND, LGA, EWR, PHL","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"7.2"},{"cancellation_rate_pct":"1.3","carrier_code":"WN","carrier_delay_pct":"33.5","carrier_name":"Southwest Airlines","carrier_type":"Low-Cost / Value","common_strengths":"Low baggage mishandling rate, generous bag policies, point-to-point schedule avoids legacy hub bottleneck fees","common_weaknesses":"Linear multi-leg aircraft routings can cause late-arriving aircraft delays to snowball across time zones by evening","complaints_per_100k":"2.3","id":"southwest-airlines","late_aircraft_delay_pct":"43.0","mishandled_baggage_per_1k":"4.6","nas_delay_pct":"17.8","ontime_arrival_pct":"77.0","primary_hubs":"MDW, DAL, DEN, BWI, LAS, PHX, HOU, OAK","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"5.5"},{"cancellation_rate_pct":"1.9","carrier_code":"OH","carrier_delay_pct":"30.1","carrier_name":"PSA Airlines","carrier_type":"Regional Operator","common_strengths":"Major Charlotte hub regional feeder providing essential connections across the mid-Atlantic and Southeast","common_weaknesses":"High regional baggage transfer volumes lead to higher mishandled baggage rates, CRJ-700/900 gate baggage checks","complaints_per_100k":"2.0","id":"psa-airlines","late_aircraft_delay_pct":"39.0","mishandled_baggage_per_1k":"7.5","nas_delay_pct":"24.0","ontime_arrival_pct":"76.8","primary_hubs":"CLT, DCA, PHL","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.7"},{"cancellation_rate_pct":"1.6","carrier_code":"AA","carrier_delay_pct":"31.2","carrier_name":"American Airlines Network","carrier_type":"Network Legacy","common_strengths":"Extensive regional feeder coverage, major southern sunbelt fortress hubs at Dallas-Fort Worth and Charlotte","common_weaknesses":"Higher baggage mishandling rate on tight regional connections, frequent summer convective thunderstorm delays across Texas and North Carolina","complaints_per_100k":"4.2","id":"american-airlines","late_aircraft_delay_pct":"37.3","mishandled_baggage_per_1k":"7.2","nas_delay_pct":"24.5","ontime_arrival_pct":"76.4","primary_hubs":"DFW, CLT, MIA, ORD, PHX, PHL, DCA, LGA","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.8"},{"cancellation_rate_pct":"2.3","carrier_code":"B6","carrier_delay_pct":"32.8","carrier_name":"JetBlue Airways","carrier_type":"Low-Cost / Value","common_strengths":"Spacious cabin comfort, seatback screens, high passenger NPS on completed flights","common_weaknesses":"Severe concentration in congested New York and Boston airspace leading to highest NAS delay exposure among large carriers","complaints_per_100k":"4.9","id":"jetblue-airways","late_aircraft_delay_pct":"32.5","mishandled_baggage_per_1k":"5.4","nas_delay_pct":"27.4","ontime_arrival_pct":"74.7","primary_hubs":"JFK, BOS, FLL, MCO, EWR","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"7.1"},{"cancellation_rate_pct":"2.8","carrier_code":"F9","carrier_delay_pct":"34.2","carrier_name":"Frontier Airlines","carrier_type":"Ultra Low-Cost","common_strengths":"Ultra-low promotional base fares, high aircraft utilization, young all-Airbus fleet","common_weaknesses":"Highest DOT complaint rate per 100k passengers, thin flight frequency on many city pairs leaving few same-day rebooking options","complaints_per_100k":"11.5","id":"frontier-airlines","late_aircraft_delay_pct":"37.6","mishandled_baggage_per_1k":"6.8","nas_delay_pct":"21.6","ontime_arrival_pct":"72.1","primary_hubs":"DEN, MCO, LAS, PHX, ATL","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"6.4"},{"cancellation_rate_pct":"3.4","carrier_code":"G4","carrier_delay_pct":"37.5","carrier_name":"Allegiant Air","carrier_type":"Ultra Low-Cost","common_strengths":"Direct nonstop links connecting underserved small regional cities directly to warm leisure destinations, low baggage loss rate","common_weaknesses":"High cancellation rate and low weekly route frequencies mean canceled flights may not have replacement departures for 2 to 4 days","complaints_per_100k":"6.2","id":"allegiant-air","late_aircraft_delay_pct":"40.6","mishandled_baggage_per_1k":"3.2","nas_delay_pct":"16.5","ontime_arrival_pct":"71.4","primary_hubs":"SFB, PIE, AZA, LAS, PGD, CVG","source_ids":"[\"BTS-TRANSTATS\",\"DOT-ATCR\",\"DOT-FAA-REFUND-RULE\",\"DOT-DASHBOARD\",\"GAO-AIRLINE-DELAYS\",\"FAA-ATCSCC-OPS\",\"CIRIUM-OTP\",\"MIT-ICAT-DELAYS\"]","weather_delay_pct":"5.2"}]