Hi, I played your game. Please, let me give you the following advices:
1) A tutorial is needed. The first time I lost because I didn't understand what to do or how to pick the luggage. Maybe you could give some special color to the objects you have to interact with.
2) About finding your passport, I think it is very hard. I moved as fast as I could and could not get it before getting to the airport. One could get more time by taking it.
3) The yellow arrow leading to the gates is confusing. I thought it would lead me to my passport, since the message of the tutorial appears just when you are reaching that point.
4) I think the time is not enough.
I hope it helps you, and thanks for developing this. It is cool!