The more you rely the more you progress... they have a frequent fliers class.
Lora is right. A minute, sometimes up to 2. A lot of time is instruction. It's best to initially buy a couple flights, at first. Then when you are there at the upstairs counter they offer a package that's a good value (a bit cheaper).
They are a minute to a minute and a half at first. I believe the more progress you make the longer the flight.
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