specification: API Commons Plans
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/Plans
provider: Airport Gap
providerId: airport-gap
created: '2026-06-13'
modified: '2026-06-13'
reconciled: false
tags:
  - Airports
  - Aviation
  - Free
  - Open Source
description: >-
  Airport Gap is a free, open-source API with no published paid tiers. Account registration
  (email and password) is required only to access the favorites endpoints; all airport data
  retrieval and distance calculation endpoints are publicly accessible without authentication.
  The service is maintained by Dennis Martinez / Dev Tester as a practice target for API
  automation testers and is free to use within the published rate limit of 100 requests per
  minute per IP address.
sources:
  - https://airportgap.com
  - https://airportgap.com/docs
  - https://github.com/dennmart/airport_gap
plans:
  - id: airport-gap-free
    name: Free
    type: free
    description: >-
      Full public access to all airport data and distance calculation endpoints with no API key required.
      Registration is required only for the favorites management endpoints. The service is free to use
      within the 100 requests-per-minute rate limit.
    entries:
      - label: API access
        name: api_access
        type: flat
        metric: month
        limit: -1
        timeFrame: month
        geo: global
        unit: 1
        price: 'Free'
        userMultiplied: false
      - label: Requests per minute
        name: requests_per_minute
        type: rate-limit
        metric: request
        limit: 100
        timeFrame: minute
        geo: global
        unit: 1
        price: 'included'
        userMultiplied: false
    elements:
      - name: GET /airports (paginated airport list)
      - name: GET /airports/:id (airport by IATA code)
      - name: POST /airports/distance (distance between airports)
      - name: POST /tokens (generate auth token)
      - name: GET /favorites (requires token)
      - name: GET /favorites/:id (requires token)
      - name: POST /favorites (requires token)
      - name: PATCH /favorites/:id (requires token)
      - name: DELETE /favorites/:id (requires token)
      - name: DELETE /favorites/clear_all (requires token)