There is no limited time frame to order in advance. You can order as soon as you fix your trip schedule to Japan, even a year in advance is not unusual.However, an order should be made at least five days prior to your departure date (for shipping to any designated address in Japan) since there may be not enough time for tickets to be delivered to you if you order less than four days before departure.Our calendar only enables you to choose any dates 5 days or later.For international shipping, we recommend you order more than two weeks prior to your departure to Japan.