Should I wait for it to upgrade hy itself or should I buy it and then upgrade it?
Do cities give you more passengers if they are your hub compared to when they are not?
Not exactly sure. All I know is that passenger rates depend on Business and Tourism in terms of cities.
Wait for like 1 month. It will ipgrade to lvl6
Never mind. The airport just upgraded by itself.
What aircraft do you use if you got 839.296 ppl in 1500 slots
I mainly use the 737, 747, 757 and DC-10.
What do you think?