Airports' Overall Punctuality Rates and Delay Time
To satisfy people's interest, especially for people who extremely care about time, that which world's major airports are the most punctual;
When customers plan to buy an international flight ticket, they are unable to know which aviation hubs cost time mostly. If there will be an emergent situation for them, this project will make travelers take delay time into consideration;
To help travelers optimize their flight route, i.e. which aviation hubs to transfer, so they can better estimate the time to arrive and no longer complain airlines themselves.