The airline object contains the unique codes and name that identify a unique airline or carrier

Boolean value indicating if the airline is currently active

Ignore. These are currently not returned.

The Cirium code for the carrier, globally unique across time

The primary customer service phone number for the carrier

The airport object contains the unique codes and name that identify a unique airport

Boolean value indicating if the airport is currently operational

The code of the city in which the airport resides

The Cirium classification of the size of the airport, 1(max) to 5(min)

The code for the country in which the airport resides

The name of the country in which the Airport resides

URL for the DelayIndex service with current delay information computed for the Airport

The district of the city in which the airport resides. Returned if specifying includeNewFields in extendedOptions.

The elevation above sea level of the airport in feet

The Cirium code for the airport, globally unique across time

The latitude of the airport in decimal degrees

The local time at the Airport in ISO-8601 format. yyyy-MM-dd'T'HH:mm:ss.SSS.

The longitude of the airport in decimal degrees

The postal code in which the airport resides

The name of the region in which the Airport resides

The street address of the airport, part 1

The street address of the airport, part 2

The name of the Time Zone region in which the Airport resides

URL for the Weather service with current weather data for the Airport

The NOAA weather zone (US only) in which the Airport resides

In the default case, when an error occurs the API returns a 200 status code and this structure contains information about the error. Not returned if specifying _extendedOptions=useHTTPErrors_, in which case the API returns the HTTP error code and _text/plain_ body containing the same information as in the structure.

This is a unique identifier for the error used internally at Cirium. Include this string in helpdesk requests to help us troubleshoot issues.

This contains detail about the error. If there are multiple errors in the request, the string may have multiple items separated by a '|' character.

This is the standard HTTP code (400, 401, 404, etc...)

The object contains information about a delay index at a single airport

The count of flights at the airport for the given time window that were canceled

The date and time (UTC) of the end of the window for the current delay calculation in ISO-8601 format. yyyy-MM-ddTHH:mm:ss.SSSZ

The date and time (UTC) of the start of the window for the current delay calculation in ISO-8601 format. yyyy-MM-ddTHH:mm:ss.SSSZ

The count of flights at the airport for the given time window that are currently expected to be delayed between 15 and 30 minutes

The count of flights at the airport for the given time window that are currently expected to be delayed between 30 and 45 minutes

The count of flights at the airport for the given time window that are currently expected to be delayed more than 45 minutes

The percentage change in normalized score from the last period based on current observations. Positive values indicate worsening conditions, while negative values indicate improving conditions.

The count of all known flights at the airport for the given time window (whether tracked or not)

The normalized delay score, from 0 to 5 in increments of .25 (where 5 is maximum delay)
- 0	- Minimal disruption (delays and cancellations)
- 2.5	- Moderate disruption (delays and cancellations
- 5	Severe disruption (delays and cancellations)


The count of flights at the airport for the given time window that are included in the delay calculation (scheduled/tracked flights)

The count of flights at the airport for the given time window that are currently expected to be on-time

A raw delay score for the airport based on the number of observations, departure delays, cancellations, and the time of day at the airport (not normalized)

Contains 0 or more DelayIndex elements (1 for each airport)

response

Boolean value indicating if the equipment type uses jet propulsion

The descriptive name for the equipment type

Boolean value indicating if the equipment type is a regional airframe

Boolean value indicating if the equipment type uses TurboProp propulsion

Boolean value indicating if the equipment type is a wide-body airframe

equipment

appId

Authentication key of the application making the request

appKey

Cirium Help Desk

## Introduction
The Airport Delay Index APIs, part of the [FlightStats APIs](/apis/flightstats-apis/overview), returns a measure of the level of departure delays a airport is currently experiencing. 

Cirium samples a relevant time range and considers the magnitude of delay, cancellations, and time of day to generate a normalized score.

A low index (0-1) indicates that departures are running relatively smoothly. A higher index (4-5) is indicative of significant delays and flight operations disruptions. The index is updated every 30 minutes.

Here's a sample of how the index can be mapped to severity
* 4 to 5 - Excessive 
* 3 to 4 - Significant 
* 2 to 3 - Moderate 
* 1 to 2 - Low
* 0 to 1 - Very Low
    
Airport Delay Index APIs answer questions such as:
* What are the major airports with significant delays in this country or region?
* Is my flight likely to be on time given current conditions at a specific airport?
* How bad is the delay?

## Licensing
Airport Delay Index APIs are standard APIs and included in our Commercial and Contract plans. 

A breakdown of the available plans is available on [Get evaluation account](/apis/flightstats-apis/get-evaluation-account#)

## Schemas
Click the download button at the top of this document to download the OpenApi spec for this API. Other schemas:

APIs
* REST - [WADL](https://api.flightstats.com/flex/delayindex/docs/v1/lts/rest/delayIndexService.wadl) [XSD](https://api.flightstats.com/flex/delayindex/docs/v1/lts/rest/delayIndexService.xsd)

## Example implementations
[FlightStats Airport Delays](https://www.flightstats.com/v2/airport-delays) - Plots current airport delays on a map based on region

[Cirium Airport Weather Impact](https://discover.cirium.com/discover/ideas/airport-weather-impact) - Dashboard of delay index and current weather conditions combined

## Related products
[Flight Status](/apis/flightstats-apis/flight-status) - Current flight information for flights about three days in advance of departure until about seven days after arrival

[Weather](/apis/flightstats-apis/weather) - Weather has a significant impact on delay. FlightStats weather APIs include Metar and TAFs and Zone Forecast.


Airport Delay Index API

Returns the current DelayIndex(es) for the given Airport(s)


format

One or more airport code(s) separated by punctuation characters

airports

Airport classification filter, used to restrict results to larger airports where 1 is for the largest airports and 5 is for the smallest airports

classification

Delay index normalized score filter, used to restrict results to airports experiencing delays. 5 is the maximum delay.

score

Airport code type. If not specified, the code searches in the order: IATA, ICAO, FS.

codeType

[Extended options](/apis/flightstats-apis/get-started) for modifying standard API behavior to fit special use cases

extendedOptions

A list of delay indexes for the requested airport

Client request error. Consult error response for specifics.

Authorization failure. Invalid 'appId', 'appKey', or rate limit violation.

Requested item could not be found, or the endpoint does not exist.

API application error. If error is consistent, please contact Cirium Support.

Returns DelayIndexes for airports in the given Country


country

A list of delay indexes for the requested country

Returns DelayIndexes for airports in the given Region


region

A list of delay indexes for the requested region

Returns DelayIndexes for airports in the given State (US and Canada only)


state

A list of delay indexes for the requested state