1. What's the departure time? 飞机何时起飞？

2. What time does the plane take off? 飞机何时起飞呢？

3. When does the next flight leave? 下一班飞机何时起飞呀？

4. Is the plane on time? 飞机准点不？

5. I need to reschedule my flight. 我要更改航班。

6. Could u show me your boarding pass, please? 能让我看下你的登机牌吗？

7. I'm in economy/business/first class. 我在经济舱/公务舱/头等舱。

8. Ladies and gentlemen, we will be departing soon. Please fasten your seat belt. 女生们先生们，我们的飞机即将起飞，请系好安全带。