{ "meta": { "dataset": "flight-numbers", "title": "US flight-number on-time performance", "description": "One row per flight number on the route it flies now: operations and the same on-time, cancellation and delay rates as the other files. Airlines reuse a number for a different city pair over time, so a number appears once, on its current route. There is no reliability score at this level.", "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/#flight-numbers", "methodology_url": "https://flyerintel.com/methodology/", "period": { "start": "2023-07-01", "end": "2026-07-31" }, "generated": "2026-09-26T04:33:08.874Z", "row_count": 2653, "sorted_by": "carrier, then flight number", "floors": [ "At least 600 operations on the route the number currently flies.", "Both airports covered by FlyerIntel, and an airline FlyerIntel covers.", "Still scheduled: operated within the last 95 days of the data." ], "notes": [ "A flight number is a slot in a schedule, and airlines reassign it. Each number here is measured on its current route only, from first_seen to last_seen." ], "columns": [ { "name": "carrier", "type": "string", "description": "IATA code of the operating airline. Matches code in the airlines file." }, { "name": "flight_number", "type": "integer", "description": "The flight number without the airline code, 1 to 9999." }, { "name": "origin", "type": "string", "description": "IATA code of the departure airport on the current route." }, { "name": "destination", "type": "string", "description": "IATA code of the arrival airport on the current route." }, { "name": "operations", "type": "integer", "description": "Scheduled operations of this number on this route 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": "first_seen", "type": "string", "description": "First date the number operated this route in the data, YYYY-MM-DD. The figures cover this date through last_seen." }, { "name": "last_seen", "type": "string", "description": "Last date the number operated this route in the data, YYYY-MM-DD." } ] }, "rows": [ {"carrier":"AA","flight_number":1,"origin":"JFK","destination":"LAX","operations":1094,"on_time_pct":89.4,"cancellation_pct":1.01,"severe_delay_pct":3,"median_arrival_delay_min":-17,"avg_arrival_delay_min":-8.4,"departure_on_time_pct":93.1,"first_seen":"2023-07-01","last_seen":"2026-07-31"}, {"carrier":"AA","flight_number":2,"origin":"LAX","destination":"JFK","operations":1121,"on_time_pct":84.2,"cancellation_pct":0.98,"severe_delay_pct":10,"median_arrival_delay_min":-15,"avg_arrival_delay_min":17,"departure_on_time_pct":86.7,"first_seen":"2023-07-01","last_seen":"2026-07-31"}, 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