Then you should have no problem getting about 5 for a flight.
I was put on them about 15 yrs ago and became very addicted to them. I double doctored. I finally had addict on my chart at one of the walkins I visited. I was taken a back. Even though originally they were prescribed by my family doc for anxiety/panic attacks. I don't recommend them other then for neccessary anxiety. If you become addicted you can suffer seizures from not having them (withdrawls).
I no longer take them or abuse them, I'm on a neccessary regiman of clonazapam,(same family). They work great too. Not as addicting.
Hope you get some for your flights, I'm anxious on the plane too.