{ "meta": { "dataset": "routes", "title": "US route on-time performance and reliability scores", "description": "One row per directional airport pair, so ATL to LGA and LGA to ATL are separate rows: flights, on-time, cancellation and delay rates, and the FlyerIntel reliability score, all airlines combined.", "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/#routes", "methodology_url": "https://flyerintel.com/methodology/", "period": { "start": "2023-07-01", "end": "2026-07-31" }, "generated": "2026-09-26T04:33:08.874Z", "row_count": 2081, "sorted_by": "origin, then destination", "floors": [ "At least 750 flights in the period and a reliability score.", "At least 3 of the six departure windows with 120 or more flights each.", "Both airports covered by FlyerIntel.", "Still flown: a flight on the route within the last 95 days of the data." ], "notes": [ "A route’s rates combine every airline that flies it. The route pages split them by airline; these files do not." ], "columns": [ { "name": "origin", "type": "string", "description": "IATA code of the departure airport. Matches code in the airports file." }, { "name": "destination", "type": "string", "description": "IATA code of the arrival airport. Matches code in the airports file." }, { "name": "flights", "type": "integer", "description": "Flights on this route in the period, all airlines combined, 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": [ {"origin":"ABE","destination":"ATL","flights":1561,"on_time_pct":86.2,"cancellation_pct":1.22,"severe_delay_pct":5.9,"median_arrival_delay_min":-13,"avg_arrival_delay_min":-0.2,"departure_on_time_pct":86.5,"reliability_score":75,"period_start":"2023-07-01","period_end":"2026-07-31"}, {"origin":"ABE","destination":"CLT","flights":3090,"on_time_pct":84.5,"cancellation_pct":2.2,"severe_delay_pct":8.3,"median_arrival_delay_min":-16,"avg_arrival_delay_min":4,"departure_on_time_pct":83.5,"reliability_score":64,"period_start":"2023-07-01","period_end":"2026-07-31"}, 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