Pure logic library for querying US airport data. Look up airports by FAA ID, ICAO code, geographic proximity, or name/city search. Contains no bundled data - accepts an array of Airport records at initialization. For zero-config use, pair with @squawk/airport-data.

Part of the @squawk aviation library suite. See all packages on npm.

Usage

import { usBundledAirports } from '@squawk/airport-data';
import { createAirportResolver } from '@squawk/airports';

const resolver = createAirportResolver({ data: usBundledAirports.records });

// Look up by FAA ID
const jfk = resolver.byFaaId('JFK');

// Look up by ICAO code
const ord = resolver.byIcao('KORD');

// Find nearest airports to a position
const nearby = resolver.nearest({ lat: 40.6413, lon: -73.7781 });
for (const result of nearby) {
  console.log(result.airport.name, result.distanceNm, 'nm');
}

// Search by name or city
const results = resolver.search({ text: 'chicago' });

Consumers who have their own airport data can use this package standalone:

import { createAirportResolver } from '@squawk/airports';

const resolver = createAirportResolver({ data: myAirports });

API

createAirportResolver(options)

Creates a resolver object from an array of Airport records.

Parameters:

• options.data - an array of Airport objects (from @squawk/types)

Returns: AirportResolver - an object with the lookup methods described below.

resolver.byFaaId(faaId)

Looks up an airport by its FAA location identifier (e.g. "JFK", "LAX", "3N6"). Case-insensitive. Returns Airport | undefined.

resolver.byIcao(icao)

Looks up an airport by its ICAO code (e.g. "KJFK", "KLAX"). Case-insensitive. Returns Airport | undefined.

resolver.nearest(query)

Finds airports nearest to a geographic position, sorted by distance ascending.

| Property | Type | Description | | --------------- | -------------------------- | -------------------------------------------------------------------- | | lat | number | Latitude in decimal degrees (WGS84) | | lon | number | Longitude in decimal degrees (WGS84) | | maxDistanceNm | number | Optional. Maximum distance in nautical miles. Defaults to 30 | | limit | number | Optional. Maximum number of results. Defaults to 10 | | types | ReadonlySet<FacilityType> | Optional. When provided, only facilities of these types are returned |

Returns NearestAirportResult[], each containing:

• airport - the matched Airport record
• distanceNm - great-circle distance in nautical miles (rounded to 2 decimal places)

// Find the 5 nearest airports within 50 nm
const nearby = resolver.nearest({
  lat: 40.6413,
  lon: -73.7781,
  maxDistanceNm: 50,
  limit: 5,
});

// Find only nearby heliports
const heliports = resolver.nearest({
  lat: 40.6413,
  lon: -73.7781,
  types: new Set(['HELIPORT']),
});

resolver.search(query)

Searches airports by name or city using case-insensitive substring matching. Results are returned in alphabetical order by name.

| Property | Type | Description | | -------- | -------------------------- | -------------------------------------------------------------------- | | text | string | Case-insensitive substring to match against name or city | | limit | number | Optional. Maximum number of results. Defaults to 20 | | types | ReadonlySet<FacilityType> | Optional. When provided, only facilities of these types are returned |

Returns Airport[].

const results = resolver.search({ text: 'san francisco', limit: 10 });

Local time at an airport

Every airport record carries an IANA timezone field (e.g. America/New_York) resolved from the airport's lat/lon at build time. Combine it with the standard Intl.DateTimeFormat API to format a timestamp in the airport's local time without pulling in a timezone library at runtime:

const jfk = resolver.byIcao('KJFK');
if (jfk) {
  const formatter = new Intl.DateTimeFormat('en-US', {
    timeZone: jfk.timezone,
    dateStyle: 'medium',
    timeStyle: 'short',
  });
  console.log(formatter.format(new Date())); // e.g. "Apr 23, 2026, 3:42 PM"
}

The same field works anywhere an IANA zone is accepted - Temporal, date-fns-tz, luxon, moment-timezone, etc.