Airport Gap

Airport Gap is a RESTful API designed to help developers practice API automation testing. It provides access to a database of worldwide airports including ICAO/IATA codes, location coordinates, elevation, and country information. The API also supports calculating distances between airports in miles, kilometers, and nautical miles, and allows authenticated users to save and manage favorite airports. Data is sourced from OpenFlights.org under the Open Database License (ODbL 1.0).

Airport Gap publishes 4 APIs on the APIs.io network, including Airports API, Distance API, Favorites API, and 1 more. Tagged areas include Airports, Aviation, Transportation, IATA, and ICAO.

The Airport Gap catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Airport Gap’s developer surface includes authentication, documentation, signup flow, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

45.0/100 developing ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreeSelf serve⚡ Free to try

4 APIs

AirportsAviationTransportationIATAICAODistance CalculationGeolocation

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 45.0/100 · developing

Contract Quality 17.5 / 25

Developer Ergonomics 3.9 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 2.7 / 13

Governance 7.0 / 12

Discoverability 8.2 / 10

Agent readiness — 44/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/airport-gap: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Airport Gap Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Examples 5

Example request and response payloads for these APIs.

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: airport-gap
name: Airport Gap
description: Airport Gap is a RESTful API designed to help developers practice API automation testing. It provides access
  to a database of worldwide airports including ICAO/IATA codes, location coordinates, elevation, and country information.
  The API also supports calculating distances between airports in miles, kilometers, and nautical miles, and allows authenticated
  users to save and manage favorite airports. Data is sourced from OpenFlights.org under the Open Database License (ODbL 1.0).
url: https://airportgap.com/docs
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://airportgap.com/favicon.ico
specificationVersion: '0.20'
created: '2026-06-13'
modified: '2026-06-13'
x-source: public-apis/public-apis
x-category: Transportation
x-type: open-source
x-tier: 2
x-tier-reason: enriched-from-stub
tags:
- Airports
- Aviation
- Transportation
- IATA
- ICAO
- Distance Calculation
- Geolocation
apis:
- aid: airport-gap:airport-gap-airports-api
  name: Airport Gap Airports API
  description: Retrieve airport information by IATA code or browse the full database.
  humanURL: https://airportgap.com/docs
  baseURL: https://airportgap.com/api/v1
  tags:
  - Airports
  properties:
  - type: OpenAPI
    url: openapi/airport-gap-airports-api-openapi.yml
  - type: Documentation
    url: https://airportgap.com/docs
  - type: GitHubRepository
    url: https://github.com/dennmart/airport_gap
  - type: RateLimits
    url: rate-limits/airport-gap-rate-limits.yml
  - type: Plans
    url: plans/airport-gap-plans-pricing.yml
  - type: FinOps
    url: finops/airport-gap-finops.yml
- aid: airport-gap:airport-gap-distance-api
  name: Airport Gap Distance API
  description: Calculate great-circle distances between two airports.
  humanURL: https://airportgap.com/docs
  baseURL: https://airportgap.com/api/v1
  tags:
  - Distance
  properties:
  - type: OpenAPI
    url: openapi/airport-gap-distance-api-openapi.yml
  - type: Documentation
    url: https://airportgap.com/docs
  - type: GitHubRepository
    url: https://github.com/dennmart/airport_gap
  - type: RateLimits
    url: rate-limits/airport-gap-rate-limits.yml
  - type: Plans
    url: plans/airport-gap-plans-pricing.yml
  - type: FinOps
    url: finops/airport-gap-finops.yml
- aid: airport-gap:airport-gap-favorites-api
  name: Airport Gap Favorites API
  description: Manage saved favorite airports (authenticated users only).
  humanURL: https://airportgap.com/docs
  baseURL: https://airportgap.com/api/v1
  tags:
  - Favorites
  properties:
  - type: OpenAPI
    url: openapi/airport-gap-favorites-api-openapi.yml
  - type: Documentation
    url: https://airportgap.com/docs
  - type: GitHubRepository
    url: https://github.com/dennmart/airport_gap
  - type: RateLimits
    url: rate-limits/airport-gap-rate-limits.yml
  - type: Plans
    url: plans/airport-gap-plans-pricing.yml
  - type: FinOps
    url: finops/airport-gap-finops.yml
- aid: airport-gap:airport-gap-tokens-api
  name: Airport Gap Tokens API
  description: Generate Bearer tokens for authenticated access.
  humanURL: https://airportgap.com/docs
  baseURL: https://airportgap.com/api/v1
  tags:
  - Tokens
  properties:
  - type: OpenAPI
    url: openapi/airport-gap-tokens-api-openapi.yml
  - type: Documentation
    url: https://airportgap.com/docs
  - type: GitHubRepository
    url: https://github.com/dennmart/airport_gap
  - type: RateLimits
    url: rate-limits/airport-gap-rate-limits.yml
  - type: Plans
    url: plans/airport-gap-plans-pricing.yml
  - type: FinOps
    url: finops/airport-gap-finops.yml
common:
- type: AgenticAccess
  url: agentic-access/airport-gap-agentic-access.yml
- type: DomainSecurity
  url: security/airport-gap-domain-security.yml
- type: Authentication
  url: authentication/airport-gap-authentication.yml
- type: Website
  url: https://airportgap.com
- type: Documentation
  url: https://airportgap.com/docs
- type: Signup
  url: https://airportgap.com/tokens/new
- type: GitHubRepository
  url: https://github.com/dennmart/airport_gap
- type: Plans
  url: plans/airport-gap-plans-pricing.yml
- type: RateLimits
  url: rate-limits/airport-gap-rate-limits.yml
- type: FinOps
  url: finops/airport-gap-finops.yml
features:
- name: Airport Data Retrieval
  description: Fetch any airport by IATA code with full details including name, city, country, IATA/ICAO codes, coordinates,
    and altitude.
- name: Paginated Airport Listings
  description: Browse the full airport database with 30 records per page using the ?page parameter.
- name: Distance Calculation
  description: Calculate the distance between any two airports by IATA code, returned in miles, kilometers, and nautical miles.
- name: Token Authentication
  description: Generate a Bearer token via POST /tokens using email and password to access protected endpoints.
- name: Favorite Airports Management
  description: Authenticated users can add, list, update (notes), and delete saved favorite airports.
- name: Bulk Favorites Clear
  description: A single endpoint removes all saved favorite airports from an account at once.
- name: JSON:API Responses
  description: All responses conform to the JSON:API specification, with standardized data, links, and pagination envelopes.
useCases:
- name: API Testing Practice
  description: Use Airport Gap as a realistic target API for practicing REST automation testing with GET, POST, PATCH, and
    DELETE workflows.
- name: Airport Lookup
  description: Integrate IATA-to-airport resolution into flight booking, travel, or logistics applications.
- name: Distance and Route Planning
  description: Calculate great-circle distances between airports for route planning, fuel estimation, or travel time approximations.
- name: Authentication Flow Testing
  description: Practice token-based authentication and Bearer token lifecycle management in test automation frameworks.
- name: CRUD Testing
  description: Validate full create, read, update, and delete flows against the favorites endpoints in integration test suites.
integrations:
- name: Open Source (MIT)
  description: Full source available at github.com/dennmart/airport_gap under the MIT License for self-hosting or contribution.
- name: OpenFlights Data
  description: Airport data sourced from OpenFlights.org under the Open Database License (ODbL 1.0).
solutions:
- name: QA and Test Automation Teams
  description: A purpose-built sandbox API for building and validating automated REST test suites.
- name: Developer Education
  description: Realistic multi-resource API with auth, pagination, and distance math for API testing courses and bootcamps.
- name: Travel and Logistics Apps
  description: Lightweight airport metadata and distance API for prototyping flight search or route planning features.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com