Tomorrow afternoon. 明天下午。

When can I come to pick up the ticket ? 我什么时候能拿到票呢？

Would you like to pick up the ticket at the airport? 你是不是要在机场取票呢？ 

Please pay at the airport counter when you receive your ticket. 请在机场服务台取票时付款。 

One week before you depart. 起飞前一星期。

Three days before you leave at the latest, or any time before that as you like. 最迟在出发前3天，或在那以前任何时间都可以。