Airport Code Converter API

GET

Match IATA and ICAO codes across 40,000 airports.

Airport Code Converter converts between 3-letter IATA and 4-letter ICAO airport codes. Submit either identifier to receive the matching code, official airport name, city, state, and country code.

Try it — live request, no key required

Request

GETapi.apiverve.com/v1/airportcodeconverter?code=MCI

Query parameters

codestring

Verification

Format

No key required to try it. Get a key to use it in your app.

Example

{
  "status": "ok",
  "error": null,
  "data": {
    "input": "MCI",
    "inputType": "IATA",
    "iata": "MCI",
    "icao": "KMCI",
    "name": "Kansas City International Airport",
    "city": "Kansas City",
    "state": "Missouri",
    "country": "US",
    "elevation": 1026,
    "latitude": 39.2976,
    "longitude": -94.7139,
    "timezone": "America/Chicago",
    "found": true
  }
}

About the Airport Code Converter API

Airport Code Converter automatically detects whether you've submitted an IATA or ICAO code based on length, then returns the corresponding code in the other format. Uses a comprehensive database of 40,000+ airports worldwide.

What people use it for

Flight Systems: Convert between IATA and ICAO codes for flight booking systems and aviation applications
Data Integration: Normalize airport codes when integrating data from different aviation sources
Travel Apps: Display both IATA and ICAO codes to users for comprehensive airport identification

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON: Default REST response
XML: Markup format
YAML: Human-readable
CSV: Tabular export
GraphQL: Query language
MCP: For AI agents

View all integrations →

Other ways to use Airport Code Converter

Same data, same APIVerve account, same credit balance — one key works on all of them.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.on VerveKit Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.on VerveSheets Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.on VerveContext

Questions.

Common questions about the Airport Code Converter API.

Read the docs →

Do I need to specify whether an input is IATA or ICAO?

No, the format is detected automatically from the code length. Three-letter strings are evaluated as IATA codes and four-letter strings as ICAO codes across a catalog of over 40,000 airports worldwide.

How many airport conversions does the Free plan cover?

The Free plan covers 100 conversions per month at 2 credits per request. For higher volumes, the Starter plan covers 100,000 conversions each month, which works out to about $0.30 per 1,000 calls.

Are coordinates and timezones included on the Free plan?

No, airport coordinates, elevation, and timezone are premium fields. Every paid plan unlocks them, while the Free plan provides the paired code, airport name, city, state, and country.

How current is the airport directory?

The directory spans more than 40,000 airports worldwide and is updated weekly. Regular updates ensure newly assigned codes, name changes, and regional metadata stay accurate.

What happens if an airport code is not recognized?

The response returns a found field set to false whenever an input does not match an airport in the database. This allows your code to check a single boolean instead of guessing from missing fields.

Can I use the converted airport data in commercial flight tools?

Yes, commercial use is permitted on any paid plan. You can display and store the converted data inside your own applications or flight systems, provided you do not resell or redistribute the raw dataset.

Request parameters — GET /v1/airportcodeconverter

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

Parameter	Type	Example	Description
`code`Required	string	`MCI`	The airport code to convert (IATA: 3 letters, ICAO: 4 letters)

Example request

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curl "https://api.apiverve.com/v1/airportcodeconverter?code=MCI" \
  -H "x-api-key: YOUR_API_KEY"

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Header	When	Value
`x-api-key`Required	Every request	Your API key. Header names are case-insensitive, so `X-API-Key` is the same header.
`Authorization`Alternate	Instead of the above	`Bearer <key>` — for clients that only expose bearer auth. Resolves to the same account and the same billing.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Response — GET /v1/airportcodeconverter

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

Sample response

{
  "status": "ok",
  "error": null,
  "data": {
    "input": "MCI",
    "inputType": "IATA",
    "iata": "MCI",
    "icao": "KMCI",
    "name": "Kansas City International Airport",
    "city": "Kansas City",
    "state": "Missouri",
    "country": "US",
    "elevation": 1026,
    "latitude": 39.2976,
    "longitude": -94.7139,
    "timezone": "America/Chicago",
    "found": true
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Field	Type	Example	Description
`input`	string	`"MCI"`	Original airport code provided in request
`inputType`	string	`"IATA"`	Detected input code format (IATA or ICAO)
`iata`	string	`"MCI"`	Three-letter IATA airport code
`icao`	string	`"KMCI"`	Four-letter ICAO airport code
`name`	string	`"Kansas City International Airport"`	Official airport name
`city`	string	`"Kansas City"`	City where airport is located
`state`	string	`"Missouri"`	State or province where airport is located
`country`	string	`"US"`	Country code (ISO 3166-1 alpha-2)
`elevation`Premium	number	`1026`	Airport elevation in feet above sea level
`latitude`Premium	number	`39.2976`	Airport latitude coordinate
`longitude`Premium	number	`-94.7139`	Airport longitude coordinate
`timezone`Premium	string	`"America/Chicago"`	Airport timezone (e.g., America/Chicago)
`found`	boolean	`true`	Whether airport code was found in database

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Header	What it carries
`x-api-remaining-credits`	Credits left in the current cycle
`x-api-credits-used`	Credits spent in the current cycle
`x-api-max-credits`	The allowance for the cycle
`x-api-version`	Version of the endpoint that answered

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

Status	Meaning	What to do
`400`	Input was rejected	Read `error`; it names the parameter that has to change.
`401`	Key missing or invalid	Check the header name and the key value.
`403`	Key valid, but not permitted here	A key restriction or an IP allow-list — never a bad key.
`429`	Rate limited, or out of credits	Read `error` to tell them apart, then back off or top up.

What a call costs — 2 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Plan	Per month	Credits	Airport Code Converter calls	Per 1,000 calls
Free	Free	200	100	Free
Starter	$29.99	200,000	100,000	$0.30
Pro	$99.99	1,000,000	500,000	$0.20
Mega	$299.99	4,000,000	2,000,000	$0.15

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Compare all pricing tiers →

Call it from cURL — GET /v1/airportcodeconverter

No SDK to install — this is a plain HTTPS call to /v1/airportcodeconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

cURL

1
2

curl "https://api.apiverve.com/v1/airportcodeconverter" \
  -H "x-api-key: YOUR_API_KEY"

Resources

GitHubapiverve/airportcodeconverter-apiSource, issues and the examples this page is built from.ReferenceAirport Code Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/airportcodeconverternpm apiverve-airportcodeconverterPyPI APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Node.js — GET /v1/airportcodeconverter

Install the Node.js SDK, then call the Airport Code Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — npm

npm install @apiverve/airportcodeconverter

Node.js

const res = await fetch("https://api.apiverve.com/v1/airportcodeconverter", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Resources

npm@apiverve/airportcodeconverterThe published Node.js client, versioned and signed.GitHubapiverve/airportcodeconverter-apiSource, issues and the examples this page is built from.ReferenceAirport Code Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

apiverve-airportcodeconverterPyPI APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Python — GET /v1/airportcodeconverter

Install the Python SDK, then call the Airport Code Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — PyPI

pip install apiverve-airportcodeconverter

Python

import requests

res = requests.get(
    "https://api.apiverve.com/v1/airportcodeconverter",
    headers={"x-api-key": "YOUR_API_KEY"},
)
print(res.json()["data"])

Resources

PyPIapiverve-airportcodeconverterThe published Python client, versioned and signed.GitHubapiverve/airportcodeconverter-apiSource, issues and the examples this page is built from.ReferenceAirport Code Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/airportcodeconverternpm APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from C# / .NET — GET /v1/airportcodeconverter

Install the C# / .NET SDK, then call the Airport Code Converter API with your key. The client wraps the same HTTPS request, so anything it returns is what the endpoint returns.

Install — NuGet

dotnet add package APIVerve.API.AirportCodeConverter

C# / .NET

using var client = new HttpClient();
client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

var json = await client.GetStringAsync("https://api.apiverve.com/v1/airportcodeconverter");
Console.WriteLine(json);

Resources

NuGetAPIVerve.API.AirportCodeConverterThe published C# / .NET client, versioned and signed.GitHubapiverve/airportcodeconverter-apiSource, issues and the examples this page is built from.ReferenceAirport Code Converter API docsEvery parameter, every response field, and the errors.ParametersWhat this call acceptsRequired and optional inputs, with example values.

Also published for

@apiverve/airportcodeconverternpm apiverve-airportcodeconverterPyPI

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Go — GET /v1/airportcodeconverter

No SDK to install — this is a plain HTTPS call to /v1/airportcodeconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/airportcodeconverter", nil)
req.Header.Set("x-api-key", "YOUR_API_KEY")

res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Resources

Also published for

@apiverve/airportcodeconverternpm apiverve-airportcodeconverterPyPI APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from PHP — GET /v1/airportcodeconverter

No SDK to install — this is a plain HTTPS call to /v1/airportcodeconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

PHP

$ch = curl_init("https://api.apiverve.com/v1/airportcodeconverter");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-api-key: YOUR_API_KEY"]);

$response = curl_exec($ch);
echo $response;

Resources

Also published for

@apiverve/airportcodeconverternpm apiverve-airportcodeconverterPyPI APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

Call it from Ruby — GET /v1/airportcodeconverter

No SDK to install — this is a plain HTTPS call to /v1/airportcodeconverter with your key in the x-api-key header. Swap in a real key and it runs as-is.

Ruby

require "net/http"

uri = URI("https://api.apiverve.com/v1/airportcodeconverter")
req = Net::HTTP::Get.new(uri)
req["x-api-key"] = "YOUR_API_KEY"

res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
puts res.body

Resources

Also published for

@apiverve/airportcodeconverternpm apiverve-airportcodeconverterPyPI APIVerve.API.AirportCodeConverterNuGet

Only the languages APIVerve ships a client for are listed — the rest call the endpoint directly over HTTPS.

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Airport Code Converter API

Try it — live request, no key required

About the Airport Code Converter API

What people use it for

Ways to call it

Other ways to use Airport Code Converter

Questions.

Request parameters — GET /v1/airportcodeconverter

Required

Authentication

Response — GET /v1/airportcodeconverter

Response fields

Response headers

Errors

What a call costs — 2 credits per call

Call it from cURL — GET /v1/airportcodeconverter

Resources

Also published for

Call it from Node.js — GET /v1/airportcodeconverter

Resources

Also published for

Call it from Python — GET /v1/airportcodeconverter

Resources

Also published for

Call it from C# / .NET — GET /v1/airportcodeconverter

Resources

Also published for

Call it from Go — GET /v1/airportcodeconverter

Resources

Also published for

Call it from PHP — GET /v1/airportcodeconverter

Resources

Also published for

Call it from Ruby — GET /v1/airportcodeconverter

Resources

Also published for

Zero-code embed — one snippet, no backend

Changelog — Airport Code Converter API

Transportation

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