
1Introduction
Web check-in has become an essential service for modern travelers, and as an Online Travel Agency (OTA), offering this capability can significantly enhance your customer's experience while opening new revenue streams. CheckinAPI provides a comprehensive solution that covers all major airlines globally.
2Why Web Check-in Matters for OTAs
Implementing web check-in services offers several key benefits:
Enhanced Customer Experience
Travelers can complete their check-in process directly through your platform, creating a seamless journey from booking to boarding.
Increased Revenue
Opportunities for upselling seats, baggage, and other ancillary services during the check-in process.
Customer Retention
Keep customers engaged with your platform throughout their entire travel journey.
Competitive Advantage
Differentiate your OTA with comprehensive travel services that competitors may not offer.
3Getting Started
Before diving into the technical implementation, ensure you have your API credentials ready and understand the basic flow of the check-in process.
4API Authentication
First, you'll need to authenticate with our API using your provided API key:
curl -H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
https://api.checkinapi.com/v1/airlines
5Implementation Steps
1Retrieve Available Airlines
Get a list of all supported airlines and their check-in capabilities:
GET /v1/airlines
{
"airlines": [
{
"code": "AA",
"name": "American Airlines",
"checkin_available": true,
"advance_checkin_hours": 24
}
]
}
2Initiate Check-in Process
Start the check-in process for a passenger:
POST /v1/checkin/initiate
{
"pnr": "ABC123",
"last_name": "Smith",
"airline_code": "AA"
}
3Handle Response & Complete Check-in
Process the response and guide users through seat selection and final confirmation.
6Best Practices
✅ Do's
- Always validate PNR and passenger details
- Implement proper error handling
- Cache airline data to reduce API calls
- Provide clear user feedback
❌ Don'ts
- Don't store sensitive passenger data
- Don't ignore rate limiting
- Don't skip testing with different airlines
- Don't hardcode airline-specific logic
7Next Steps
Ready to start implementing CheckinAPI in your platform? Our comprehensive documentation and support team are here to help you every step of the way.

Hava Havai Team
API Integration Specialist
Expert in travel technology integration with over 5 years of experience helping OTAs implement seamless check-in solutions.