Can you describe what benzos feel like? Considering them for flying anxiety

Hi all
I have very bad claustrophobia and Emetophobia which makes it very very very difficult for me to fly… I have very intense panic attacks every time I need to take a flight.
I was wondering if anyone took benzos during a panic attack and can describe what it feels like?
I previously took kenadryl (which is a medication against motion sickness that also has a sedative effect) and I hated how uncomfortably sleepy it made me… do benzos make you very sleepy? I would like something that would calm me down not knock me off.
What’s your experience?