Bestflights.ai is a flight-related query tool that uses machine learning and natural language processing techniques to provide personalized results. Key features and advantages include:

• Answering specific flight-related queries by taking into account varying parameters, including travel dates, destination, cheapest fare, fastest route, and mileage
• Searching for the best flight deals across multiple airlines and online travel websites
• Providing early access to users, indicating that it is still in its test phase

Use cases for Bestflights.ai involve various travel-related activities:

• Finding answers to queries instantly by typing in relevant information on the platform
• Generating personalized itineraries based on various parameters
• Simplifying travel planning and saving users time and money

It is not clear whether the tool is free or paid as such, nor is there any mention of the accuracy of the results. However, the website assures users that their privacy is safeguarded and directs them to their privacy policy page.