Research online:
Look for popular tour operators in Kerala by searching on travel websites, review platforms, and forums. Read reviews and feedback from previous customers to gauge the quality of their services.
Seek recommendations:

Ask friends, family, or colleagues who have visited Kerala for recommendations on tour operators they had a positive experience. Personal recommendations can be valuable in finding reliable operators.
Check for certifications:

Look for tour operators accredited by recognized tourism organizations like the Government of India Ministry of Tourism, Kerala Tourism Department. This can indicate their commitment to quality service and adherence to industry standards.
Compare packages and prices:

Evaluate the itineraries, inclusions, and prices different tour operators offer. Ensure that the package suits your preferences and provides value for your money. Tour Operators having their own fleet of transport vehicles and own hotels can offer quality services and value for money.
Communication and responsiveness:

Contact the tour operators directly to inquire about their services. Assess their responsiveness, clarity in communication, and willingness to promptly address your queries or concerns.
Customization options:

If you have specific requirements or preferences, check if the tour operator offers customization options. A good tour operator will work with you to tailor the itinerary to your needs.