Aviationstack

Aviationstack delivers live and historical flight data through a REST API that returns clean JSON in one HTTP request. Track flights worldwide in real time, pull historical records for analysis, and query reference databases covering airlines, airports, aircraft, routes, and schedules across more than 250 countries and territories.

Developers use it for flight status dashboards, booking platforms, airport displays, travel alerts, and logistics tools. Endpoints cover real time tracking with delay and cancellation details, historical flights, airline routes, airline and airport lookups, and autocompletion for search fields. Responses use predictable field names, so a prototype comes together in minutes.

Authentication is a simple access key, any language works, and code samples ship for popular stacks. A free plan covers testing and small projects.