# US Airline On-Time League Table — 2 Months

**Use case:** 

Ready-to-run US airline on-time league table from official BTS data: two months of per-airline delay rates, cancellation causes and carrier vs weather vs late-aircraft delay minutes, with honest denominators on every row.

## Input

```json
{
  "sinceMonth": "2026-05",
  "untilMonth": "2026-06",
  "airlines": [
    "WN"
  ],
  "groupBy": "airline",
  "minFlights": 0,
  "maxResults": 50,
  "allowPartial": false
}
```

## Output

```json
{
  "month": {
    "label": "Month",
    "format": "string"
  },
  "airline": {
    "label": "Airline",
    "format": "string"
  },
  "route": {
    "label": "Route",
    "format": "string"
  },
  "origin": {
    "label": "Origin airport",
    "format": "string"
  },
  "dest": {
    "label": "Destination airport",
    "format": "string"
  },
  "total_flights": {
    "label": "Total flights",
    "format": "integer"
  },
  "on_time_rate_pct": {
    "label": "On-time rate (%)",
    "format": "number"
  },
  "arr_delay_rate_pct": {
    "label": "Arrival delay rate (%)",
    "format": "number"
  },
  "cancellation_rate_pct": {
    "label": "Cancellation rate (%)",
    "format": "number"
  },
  "avg_arr_delay_delayed_only_min": {
    "label": "Avg arrival delay, delayed only (min)",
    "format": "number"
  },
  "carrier_delay_share_pct": {
    "label": "Carrier share (%)",
    "format": "number"
  },
  "weather_delay_share_pct": {
    "label": "Weather share (%)",
    "format": "number"
  },
  "nas_delay_share_pct": {
    "label": "NAS share (%)",
    "format": "number"
  },
  "late_aircraft_delay_share_pct": {
    "label": "Late-aircraft share (%)",
    "format": "number"
  },
  "worst_day": {
    "label": "Worst day",
    "format": "string"
  },
  "data_complete": {
    "label": "Data complete",
    "format": "boolean"
  },
  "results_truncated": {
    "label": "Results truncated",
    "format": "boolean"
  }
}
```

## About this Actor

This example demonstrates how to use [US Airline On-Time & Flight Delay Statistics by Route (BTS)](https://apify.com/malonestar/bts-airline-ontime-delay-climatology.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/malonestar/bts-airline-ontime-delay-climatology.md) to learn more, explore other use cases, and run it yourself.


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For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/malonestar/bts-airline-ontime-delay-climatology.md

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