To build a travel dashboard, start by gathering data such as ticket prices, flight durations, and airline details. Use a tool like Excel, Google Sheets, Tableau, or Power BI to organize and visualize the data. Calculate the average ticket prices and display them as a simple metric. For average time per phase, calculate and present the average duration for each phase like boarding or in-flight in a chart or table. For the bar graph, group data by airline and plot the average ticket prices. Visualization tools like Tableau or Power BI are great for creating an interactive and visually appealing dashboard.