{
  "meta": {
    "dataset": "airlines",
    "title": "US airline on-time performance and reliability scores",
    "description": "One row per covered airline: flights, on-time, cancellation and delay rates, and the FlyerIntel reliability score across its whole network. A regional flight counts for the airline that operated it, not the brand on the ticket.",
    "publisher": "FlyerIntel",
    "source": "US Department of Transportation, Bureau of Transportation Statistics, Reporting Carrier On-Time Performance",
    "source_url": "https://www.transtats.bts.gov/Fields.asp?gnoyr_VQ=FGJ",
    "attribution": "FlyerIntel analysis of US DOT Bureau of Transportation Statistics data",
    "license": "CC BY 4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "landing_page": "https://flyerintel.com/data/#airlines",
    "methodology_url": "https://flyerintel.com/methodology/",
    "period": {
      "start": "2023-07-01",
      "end": "2026-07-31"
    },
    "generated": "2026-09-26T04:33:08.874Z",
    "row_count": 15,
    "sorted_by": "code",
    "floors": [
      "Covered airlines with at least 10,000 flights in the period. These are the airlines that get an indexed page."
    ],
    "notes": [
      "Every row has its own period. An airline that stopped reporting partway through the analysis window ends earlier, so check period_end before comparing one airline with another."
    ],
    "columns": [
      {
        "name": "code",
        "type": "string",
        "description": "IATA airline code, two characters."
      },
      {
        "name": "name",
        "type": "string",
        "description": "Airline name as it appears on the airline page."
      },
      {
        "name": "flights",
        "type": "integer",
        "description": "Flights the airline operated in the period, cancelled and diverted flights included."
      },
      {
        "name": "on_time_pct",
        "type": "number",
        "decimals": 1,
        "description": "Percent of completed flights that arrived less than 15 minutes after their scheduled time. Cancelled and diverted flights have no arrival delay and are left out of this rate."
      },
      {
        "name": "cancellation_pct",
        "type": "number",
        "decimals": 2,
        "description": "Percent of all scheduled flights that were cancelled."
      },
      {
        "name": "severe_delay_pct",
        "type": "number",
        "decimals": 1,
        "description": "Percent of completed flights that arrived 60 minutes or more after their scheduled time."
      },
      {
        "name": "median_arrival_delay_min",
        "type": "number",
        "decimals": 0,
        "description": "Median arrival delay in minutes across completed flights. A negative number means the typical flight arrived early."
      },
      {
        "name": "avg_arrival_delay_min",
        "type": "number",
        "decimals": 1,
        "description": "Mean arrival delay in minutes across completed flights, with early arrivals counted as negative minutes."
      },
      {
        "name": "departure_on_time_pct",
        "type": "number",
        "decimals": 1,
        "description": "Percent of flights that left the gate less than 15 minutes after their scheduled time, out of flights that departed."
      },
      {
        "name": "reliability_score",
        "type": "integer",
        "description": "FlyerIntel reliability score from 0 to 100, higher is better, as a whole number the way the pages print it. Weights and reference points are on the methodology page."
      },
      {
        "name": "period_start",
        "type": "string",
        "description": "First date the figures cover, YYYY-MM-DD."
      },
      {
        "name": "period_end",
        "type": "string",
        "description": "Last date the figures cover, YYYY-MM-DD."
      }
    ]
  },
  "rows": [
    {"code":"9E","name":"Endeavor Air","flights":304230,"on_time_pct":85.1,"cancellation_pct":2.3,"severe_delay_pct":6,"median_arrival_delay_min":-12,"avg_arrival_delay_min":0.3,"departure_on_time_pct":85.7,"reliability_score":70,"period_start":"2023-07-01","period_end":"2024-12-31"},
    {"code":"AA","name":"American Airlines","flights":3019376,"on_time_pct":74.8,"cancellation_pct":1.76,"severe_delay_pct":10,"median_arrival_delay_min":-5,"avg_arrival_delay_min":13.7,"departure_on_time_pct":75,"reliability_score":52,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"AS","name":"Alaska Airlines","flights":813732,"on_time_pct":78.9,"cancellation_pct":1.28,"severe_delay_pct":5,"median_arrival_delay_min":-4,"avg_arrival_delay_min":3.6,"departure_on_time_pct":80.2,"reliability_score":71,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"B6","name":"JetBlue","flights":745492,"on_time_pct":72.5,"cancellation_pct":2.19,"severe_delay_pct":11.7,"median_arrival_delay_min":-5,"avg_arrival_delay_min":13.2,"departure_on_time_pct":72.8,"reliability_score":45,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"DL","name":"Delta Air Lines","flights":3146502,"on_time_pct":82.1,"cancellation_pct":1.16,"severe_delay_pct":6.3,"median_arrival_delay_min":-8,"avg_arrival_delay_min":3.9,"departure_on_time_pct":82.1,"reliability_score":71,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"F9","name":"Frontier Airlines","flights":629235,"on_time_pct":71.8,"cancellation_pct":2.09,"severe_delay_pct":11.5,"median_arrival_delay_min":-5,"avg_arrival_delay_min":14.9,"departure_on_time_pct":72.5,"reliability_score":45,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"G4","name":"Allegiant Air","flights":381495,"on_time_pct":75.7,"cancellation_pct":0.94,"severe_delay_pct":9.5,"median_arrival_delay_min":-6,"avg_arrival_delay_min":12.7,"departure_on_time_pct":77,"reliability_score":58,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"HA","name":"Hawaiian Airlines","flights":199679,"on_time_pct":83.7,"cancellation_pct":1,"severe_delay_pct":2.9,"median_arrival_delay_min":-1,"avg_arrival_delay_min":5.5,"departure_on_time_pct":85.8,"reliability_score":80,"period_start":"2023-07-01","period_end":"2025-12-31"},
    {"code":"MQ","name":"Envoy Air","flights":886878,"on_time_pct":80.1,"cancellation_pct":1.8,"severe_delay_pct":6.6,"median_arrival_delay_min":-6,"avg_arrival_delay_min":5.2,"departure_on_time_pct":82,"reliability_score":66,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"NK","name":"Spirit Airlines","flights":635598,"on_time_pct":75.5,"cancellation_pct":2.06,"severe_delay_pct":9.6,"median_arrival_delay_min":-6,"avg_arrival_delay_min":9.3,"departure_on_time_pct":74.7,"reliability_score":54,"period_start":"2023-07-01","period_end":"2026-05-01"},
    {"code":"OH","name":"PSA Airlines","flights":717562,"on_time_pct":75.8,"cancellation_pct":3.43,"severe_delay_pct":10.4,"median_arrival_delay_min":-6,"avg_arrival_delay_min":13.1,"departure_on_time_pct":77.3,"reliability_score":44,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"OO","name":"SkyWest Airlines","flights":2433643,"on_time_pct":80.4,"cancellation_pct":1.33,"severe_delay_pct":7.9,"median_arrival_delay_min":-7,"avg_arrival_delay_min":8.1,"departure_on_time_pct":82.3,"reliability_score":64,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"UA","name":"United Airlines","flights":2418979,"on_time_pct":79.7,"cancellation_pct":1.21,"severe_delay_pct":7.5,"median_arrival_delay_min":-7,"avg_arrival_delay_min":6,"departure_on_time_pct":81.2,"reliability_score":66,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"WN","name":"Southwest Airlines","flights":4371639,"on_time_pct":78.2,"cancellation_pct":0.86,"severe_delay_pct":6,"median_arrival_delay_min":-4,"avg_arrival_delay_min":5.9,"departure_on_time_pct":74.8,"reliability_score":71,"period_start":"2023-07-01","period_end":"2026-07-31"},
    {"code":"YX","name":"Republic Airways","flights":1004281,"on_time_pct":82.3,"cancellation_pct":3.26,"severe_delay_pct":6.7,"median_arrival_delay_min":-10,"avg_arrival_delay_min":2,"departure_on_time_pct":84.9,"reliability_score":61,"period_start":"2023-07-01","period_end":"2026-07-31"}
  ]
}