Thank you for your very informative comment! I check all of your examples, and I'll read out them to memorize!

"The plane is due to arrive at 10:30." It's another way of saying: "The plane is scheduled to arrive at 10:30." "Due to" used in this way means "scheduled to". When talking about something arriving or leaving at a certain time, you can use "due to (arrive/leave)". You can also say: "The plane is due at 10:30." It means the same thing. The meaning of "due to" in this way is used when you are talking about a time or time-frame that something is expected/scheduled to happen. Examples: "The package is due to be shipped on Monday." "The train is due to leave the station within the next few minutes." "The bus is due to arrive at 9:30." Note: when you are saying something is "due to arrive" you can often simply drop "to arrive" and just say "due". Examples: "The bus is due at 9:30." "The train is due at the station at 11:00."