Guests to the Pittsburgh-Butler Regional Airport's 90th birthday celebration check out a 1940s-era single-engine airplane. The airport celebrated Saturday with food trucks, free single-engine plane rides and other festivities.

Charlotte Cotter, 2, of Butler steps out of a single-engine airplane with her father, David, during the airport's celebration on Saturday. Charlotte and her brother, Max, both took their first flights in planes of that size.

The Pittsburgh-Butler Airport celebrated 90 years of serving Butler County and the surrounding communities this weekend. Festivities included food trucks, free plane rides and other activities.

Visitors check out planes on display at the Pittsburgh-Butler Regional Airport on Saturday. The free event included raffles every 15 minutes for free airplane rides, a Top Fun Kids' Zone, antique aircraft displays, food trucks, a “fly market” aviation swap meet, music, games and prizes.