The AI Travel Planner is a state-of-the-art web service making use of Large Language Models (LLMs), that is revolutionizing travel planning. It provides a smooth and customized itinerary based on the user’s location, preferred destinations, dates of trip, spending limit, traveling companions, and special instructions. The program is an intelligent and thorough travel companion since it uses sophisticated LLMs to evaluate inputs and produce ideal trip schedules. Among the application’s standout features is intelligent Flight Recommendations, which lets the system recommend the best flights based on user preferences for pricing, duration of travel, and layovers. Budget restrictions, user preferences, and accessibility to well-known sites are all taken into account while providing accommodation suggestions. Users with customizable itineraries can adjust their trip schedules to suit their own interests and needs. Analysis of accuracy, response time and user satisfaction of AI based travel planning shows better results in comparison with traditional manual methods.