It is suggested that the most economical way is to fly from Sanya to Jinan, and at least you can buy a 30% discount ticket (you should book it about one month in advance). There are the following flights to choose from: Capital Airlines JD5 145 (stopping), Airbus 3 19 07: 15 Phoenix Airport, 1 1:50 to Yao Qiang Airport; Shandong Airlines SC 1 178 (stopping) Boeing 737 (middle) 20: 20-00: 50; Sichuan Airlines 3U8799 (direct flight) Airbus 320 (middle) 08: 05-11:30; The direct train to Jinan is the most economical, so I don't need to say it. Booking air tickets can be made online. The earlier you book, the cheaper it is, because August is the summer vacation, and the later the air tickets will be more expensive. Generally, a 30% discount ticket is the cheapest, and you can sell it when you see it. The fare is about 640 (excluding airport construction fee, fuel and insurance).