Hello!
First of all I want to inform you that I have read on the wiki about flight planning and flight execution.
So I started playing this game some days ago. I leased a Bombardier Dash8-Q400 NextGen EHGW. I created 8 flight numbers:

I'm talking about flight 1121, 1122, 1123, 1124, 1211, 1212, 1213 and 1214. Flights between Stavanger (SVG) and Oslo Gardermoen (OSL). I added the said airplane to all these flight numbers.
I then went over to Fleet Management, and to the FLight Plan. I then activated the flight plan, and everything looks correct to me:

The Flight Planning button is now green. I pressed the Flights button, and it looks like this:

All of them are booked. As you can see at the bottom of the picture, it's now 11:51 UTC, and the next flight is at 12:00 UTC, from Oslo Gardermoen to Stavanger. For some reason the airplane is still at Stavanger, when it should have been in Oslo. I'm taking a look at the departures at Oslo, but I can't find my flight at all:

So, what am I missing? What have I done wrong? I can't find any information about this in the wiki. I have tried searching for the problem, but I can't find anything.
I appreciate all the help I can get! Thank you!