Cirium vs OAG vs FlightAPI: Which is Best for Flight Status & Schedule Data?

If you’re building apps for travel, managing airport ops, or keeping cargo moving, the right flight data is critical. From customer notifications to route planning and analytics, one inaccurate data feed can set off a chain reaction nobody wants to deal with. And you’re not the only one feeling the pressure. In 2024, the aviation analytics market is valued at USD 2.58 billion, projected to climb to USD 7.45 billion by 2032. Demand for up-to-the-second flight status, accurate schedules, and deep historical datasets has never been higher.

Whether you rely on established providers or are searching for an OAG and Cirium alternative for flight data, you will get all 3 flight status api comparison in this guide.

Cirium is known for its reach and legacy, OAG brings unmatched historical depth, and FlightAPI focuses on accessibility and transparency for developers and small businesses. 

Read further to learn about their features, data coverage, pricing, and the sort of use-cases each one truly excels at, so you can decide who earns a spot in your tech stack and who’s better left for someone else.

What Data Do FlightAPI, Cirium, and OAG Provide?

When choosing a flight status api. You’re handing over the keys to your app’s reliability, customer experience, and even compliance. Here’s a detailed Overview, Data Coverage, and Sources for each.

Feature / Provider	FlightAPI	Cirium	OAG
Data Focus	Real-time flight status, schedules, airport movements, and pricing data	Flight status, schedules, analytics, fleet tracking, emissions data	Flight schedules, live status, and historical flight + airfare data
Who Uses It	Developers, startups, digital platforms, enterprises	Airlines, airports, finance, tech giants, government agencies	Airlines, airports, travel companies, financial analysts, tech businesses
Real-Time Capabilities	Live status, gates, terminals, delays, baggage info, airport movements	Real-time updates: scheduled, active, landed, cancelled, diverted	1M+ flight status updates daily + 200K+ schedule changes
Schedule Coverage	Flights up to 365 days ahead	Tracks 99.5% of scheduled passenger flights	Covers 97% of scheduled flights
Historical Data	Not mentioned	Not detailed (only mentions large datasets, validation)	15+ years of flight performance + 4 trillion airfare records
Aircraft Coverage	Data from 700+ airlines & vendors	Tracks 465,515+ aircraft	Not quantified in your text
API Features	Flight Status API, Track Flights Between Airports API	Search by flight, route, airline, airport; deep status events	Status, schedule, connections, historical performance, route analysis
Data Sources	Airlines, airports, industry partners	Airlines, airports, ANSPs, GDS, Aireon ADS-B, manual validation	Airlines, airports, civil aviation authorities, OTAs, GDS, proprietary schedule network
Integration Notes	Easy integration, clear documentation	Enterprise focus, heavy validation processes	Validated, cross-referenced datasets
Forward-Looking Data	Up to 365 days ahead	Not specified	12-month forward-looking schedules

FlightAPI

FlightAPI is designed for today’s digital businesses, platforms, and startups that want simple, fast access to flight status, schedule, and pricing data without the complexity or cost of legacy providers. Their focus is on rapid integration, clear documentation, and cost transparency, which makes them appealing for developers, startups, and enterprises. 

Data Coverage

• Airlines & Vendors: Gets data from 700+ airlines and a broad range of third-party vendors.
  
• Real-Time Focus: FlightAPI’s core strength is up-to-the-minute data for tracking live status, flight prices (one-way, round-trip, multi-city), schedules, and airport movements as events unfold.
  
• API Capabilities: FlightAPI offers robust flight tracking capabilities through two main APIs. With the Flight Status API, you can track any specific plane in real time by entering its flight number, airline code, and travel date, and retrieve live details such as departure and arrival times, airports, terminals, gates, baggage info, and flight status updates. The Track Flights between Airports API lets you view all flights operating between two airports on any given date up to 365 days ahead. So you can monitor flight status, scheduled times, and airline operators across multiple routes at once. Both APIs are easy to integrate, using straightforward parameters and delivering clear, structured JSON responses that work seamlessly in travel, logistics, or tracking platforms.

Data Sources:

Direct from Airlines and Airports: FlightAPI sources live data straight from airlines and airport authorities, providing the most current and reliable flight information. So that you never have to rely on outdated or cached feeds.

Industry Partnerships: Additional accuracy comes from established partnerships with trusted aviation data providers, strengthening coverage and filling in any gaps.

No Stale Data: All updates are delivered in real time, so you always get up-to-the-minute status direct from the authoritative sources.

You can also use this API with no-code tools like Google Sheets and automation platformscheck out these tutorials to see how:

➤ Build an App to Track Flights Between Any Two Airports

➤ Create a Flight Tracking Tool with Loveable

➤ Extract Airport Schedule Data with Python

➤ Check Airport Schedule Using Google Sheet and API

➤ Track Flights Between Airports with Google Sheet

Cirium

Cirium is a popular option for aviation data. Trusted by airlines, airports, finance, tech giants, and government agencies alike. They just don’t provide a flight status API, but also deliver analytics, fleet tracking, emissions data, and more. Cirium’s approach is all about direct industry integration and building trust with layers of validation, redundancy, and partnerships. 

They’ve spent over a century refining how they gather, clean, and distribute flight data, which makes them a go-to for enterprises where accuracy and reliability are non-negotiable. 

Data Coverage

• Scheduled Flights: Cirium tracks an estimated 99.5% of all scheduled passenger flights worldwide.
• Aircraft Coverage: Cirium tracks more than 465,515 aircraft and more than 26 million scheduled operations, covering 99.5% of scheduled passenger flights.
• Airlines: 900+ airlines are represented in their data ecosystem.
• API Capabilities: Let’s you track real-time flight updates worldwide, covering every major event such as scheduled, active, landed, cancelled, or diverted. You can search by flight, route, airline, or airport and get live details on gates, terminals, runways, and baggage. The API handles disruptions like delays and diversions, delivering rich data in an easy-to-use format for any modern app or platform.

Data Sources

• Direct Airline & Airport Feeds: The backbone of their data comes straight from airlines and airports which means fewer delays, less misinformation, and richer details.
  
• Air Navigation Service Providers: These sources contribute to position and routing data and provide visibility into real flight paths.
  
• GDS Systems: Access to data from global distribution systems helps validate bookings, schedules, and operational changes.
  
• Industry Partnerships: Cirium partners with major players, notably Aireon for satellite-based ADS-B (Automatic Dependent Surveillance-Broadcast) tracking, which extends their reach to cover aircraft literally anywhere on the globe including remote airspace.
  
• Manual Research & Validation: Dedicated teams check anomalies and validate edge cases, adding a human layer to automated quality checks.
  
• Redundancy Layers: With 2,000+ validated sources, their system cross-checks and fuses feeds, weeding out errors before they reach you.
  

OAG

OAG is another name synonymous with aviation intelligence, going back to 1929. While they started out publishing printed timetables, OAG is now a digital powerhouse, offering not just flight schedules and live status, but also huge archives of historic data. Their platform is used by airlines, airports, travel companies, financial analysts, and tech businesses needing reliable flight status and performance insights. 

Data Coverage

• Scheduled Flights: OAG covers 97% of scheduled flights globally, updating their systems with over 107,000 flights per day.
  
• Real-Time Updates: More than 1 million flight status updates and 200,000+ schedule changes processed daily, giving you near-instant access to shifts in airline operations.
  
• Historical Data: OAG stands out for archiving 15+ years of flight performance records, as well as a gigantic database of four trillion historical airfares critical for fare analysis, route optimisation, and trend forecasting.
  
• Forward-Looking Data: Their APIs support connection planning with 12 months of forward-looking schedule data.
  
• API Output: Real-time flight status, schedule, connections, historical performance, route analysis, and alerting for disruptions or schedule changes.
  

Data Sources

• Airlines and Airports: OAG’s primary data comes from direct airline and airport feeds, refreshed as often as the airline pushes new updates.
  
• Government Feeds: National and international civil aviation authorities provide official, regulatory-backed data, which is helpful for compliance and accurate reporting.
  
• Proprietary Schedule Network: OAG has built its global network of schedules, which combines official airline feeds with data from thousands of sources to create a single, unified “master” schedule that powers its analytics.
  
• Metasearch Engines, OTAs, and GDSs: Data from online travel agencies, metasearch sites, and GDS partners rounds out the coverage, allowing OAG to catch changes or gaps in official feeds.
  
• Data Validation: OAG employs a strict data quality process, validating and cross-referencing all data before it hits their public APIs.

Wrapping Up:

OAG and Cirium are undeniably popular aviation data providers, and pricing often becomes a major factor when teams compare them. That’s why searches like cirium vs oag price are so common. But choosing the right provider goes far beyond cost your product’s needs, the speed of your application, the APIs you require, and the overall developer experience matter just as much. This becomes even more important during app development, where API reliability, response speed, and ease of integration directly affect how smoothly your product performs.

In this guide, we’ve covered everything you need to evaluate the best OAG alternatives for flight schedules as well as the best Cirium alternative for flight status data. We’ve also highlighted how FlightAPI handles both flight status and schedule data using a single API key and a single plan—meaning you don’t need separate subscriptions for different data types. One plan gives you both capabilities, simplified integration, and fast responses suitable for modern applications.

If you’d like to test it out, you can try the Flight Status API and Flight Schedule API through the FlightAPI free Trial. And of course, you’re free to explore and compare all providers to see which one truly fits your product and business needs.

Additional Resources:

• How to Create an App for Live Flight Data
  
• Best Flight Status APIs in 2026

• Flight Data Service Providers

• Integrate Flight API into Your Website

• Best Travel API Providers