Many who are flying to Pennsylvania will arrive via the Pittsburgh International Airport. However, if there is a Spirit Airlines hub in your area you may be able to fly directly into Latrobe's Arnold Palmer Airport.
Pittsburgh International Airport
SuperShuttle provides a van service to Latrobe for $84. If you are flying in with a number of other attendees, this service and cost could be shared.
Elite Coach provides both a car & van shuttle to Latrobe. Prices vary.
Arnold Palmer Airport in Latrobe
For those flying in to Latrobe, most hotels have shuttle services from the airport.