Flying to KY what time do we need to arrive prior to flight?

GSO is a smaller but very well run airport. Give yourself at least an hour but expect to be sitting around past security for a bit (minimal post-security amenities but free WiFi!). I've never spent more than ten or fifteen minutes in security here even when the line is long. The security officers are prompt and professional. But often there's only one line operating so bottlenecks are possible. Be prepared to move through security the moment you step in line and you'll move through quickly and not hold anyone else up.

general guideline is 90 minutes