Top 15 Flight APIs for Travel Startups (Complete Guide)
If you want to build a flight booking website, mobile travel app, or B2B travel portal, you need a Flight API. A Flight API connects your platform with airline systems to provide real-time flight availability, pricing, booking, and ticketing.
Most travel platforms such as MakeMyTrip, Expedia Group, and Booking Holdings use powerful airline APIs connected to global reservation networks.
In this guide, we will explore the Top 15 Flight APIs for travel startups in 2026.
1. Amadeus Flight API
One of the most popular travel technology providers in the world is Amadeus IT Group. Its system connects thousands of airlines through the Amadeus Global Distribution System.
Key Features
Real-time flight search
Fare pricing
Booking and ticketing
Airport and airline data
Best For
Travel startups, travel agencies, and B2B portals.
2. Sabre Flight API
Another major travel technology provider is Sabre Corporation. Their airline data is accessed through the Sabre Global Distribution System.
Key Features
Global airline inventory
Dynamic pricing
Ticketing support
Booking management
Best For
Large travel portals and airline booking platforms.
3. Travelport Flight API
Travelport offers APIs connecting multiple systems including Galileo Global Distribution System and Worldspan Global Distribution System.
Key Features
Multi-source airline content
Fare comparison
NDC airline content
Booking and ticketing
Best For
Travel companies building global flight booking systems.
4. Duffel Flight API
Duffel is a modern flight API designed specifically for startups.
Key Features
Easy integration
Direct airline connections
NDC support
Clean developer documentation
Best For
Travel startups and SaaS booking platforms.
5. Kiwi.com Tequila API
The Kiwi.com Tequila API provides powerful flight search capabilities.
Key Features
Low-cost airline coverage
Multi-city search
Cheap flight discovery
Booking integration
Best For
Budget flight comparison websites.
6. Skyscanner Flight API
The Skyscanner API allows developers to access global flight search data.
Key Features
Price comparison
Multi-airline search
Global route coverage
Fare alerts
Best For
Flight comparison engines.
7. TravelFusion API
TravelFusion aggregates airline and low-cost carrier data.
Key Features
Low-cost airline inventory
Direct airline connections
Ticketing support
Best For
Online travel agencies.
8. Mystifly Flight API
Mystifly Consulting offers airline aggregation through its MyFareBox platform.
Key Features
Global airline coverage
Multi-GDS integration
Fare management
Best For
Travel consolidators and agencies.
9. TBO Flights API
The B2B travel platform TBO Tek provides APIs for travel agencies.
Key Features
Flight booking
Hotel booking
B2B travel inventory
Best For
Travel agencies building B2B portals.
10. Tripjack Flight API
Another popular B2B travel platform is TripJack.
Key Features
Airline inventory
Dynamic pricing
Agent booking portal
Best For
Small travel agencies.
11. Verteil API
Verteil Technologies focuses on airline NDC technology.
Key Features
Direct airline distribution
NDC connectivity
Airline retailing tools
Best For
Airlines and modern travel platforms.
12. AirLabs API
The aviation data platform AirLabs offers flight data APIs.
Key Features
Flight status
Airline routes
Airport data
Best For
Flight tracking apps.
13. Aviationstack API
Aviationstack provides aviation data and flight information APIs.
Key Features
Real-time flight data
Airline schedules
Global aviation database
Best For
Flight tracking websites.
14. OAG Flight API
The aviation intelligence company OAG provides flight schedules and aviation analytics.
Key Features
Global airline schedules
Route data
Aviation analytics
Best For
Travel analytics platforms.
15. Cirium Flight API
The aviation data company Cirium offers airline operational data.
Key Features
Flight status
Aircraft information
Airline schedules
Best For
Flight tracking and aviation analytics.
How to Choose the Best Flight API
Before selecting a Flight API, consider the following factors:
1. Airline Coverage
Ensure the API includes both full-service airlines and low-cost carriers.
Example airlines:
Emirates
Qatar Airways
Air India
2. Pricing Model
Some APIs charge:
Setup fees
Per booking commission
Monthly subscription
3. Integration Complexity
Modern APIs like Duffel are easier for developers compared to traditional GDS systems.
4. Ticketing Access
If your agency is accredited by the International Air Transport Association, you can issue tickets directly.
Otherwise, you may need a ticketing consolidator.
Final Thoughts
Choosing the right Flight API is critical for building a successful travel platform. Traditional systems like Amadeus Global Distribution System, Sabre Global Distribution System, and Galileo Global Distribution System provide the largest airline inventory, while modern APIs like Duffel and Kiwi.com offer easier integration for startups.
By selecting the right API provider, travel startups can build powerful booking websites, B2B portals, and flight search engines.
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