You can check the departure boards for updated boarding times and flight information.

您可以查看登机牌，了解最新的登机时间和航班信息。

You board a train, you get a boarding pass with a boarding time, and generally a boarding platform.

你登上火车，你会得到一张登机牌，上面写着登机时间，通常还有一个登机平台​​。

And by that I mean I always base my arrival to the airport on the boarding time of my flight not the departure time.

所以，我一般都是根据航班登机时间到达机场，而非起飞时间。

On the boarding pass, you will see your " boarding time" , this is when you get on the plane and your " boarding gate" , the place in the airport where you're going to get on your plane before takeoff.

在登机牌上， 您会看到您的“登机时间”，这是您登机的时间和您的“登机口” ，即起飞前您将在机场登机的地方。