Air 21 Airlines was a short-lived United States airline based in Fresno, California, led by Mark Morro, and founded by David Miller and co-founded by David J. VanderLugt. The airline operated five Fokker F28 Fellowship 64-passenger twin engine jet aircraft. The Fokker F28 was a European aircraft manufactured in The Netherlands and was one of the first regional jets. Fokker was the oldest airplane manufacturer in the world at the time of its demise. Other F28 operators in the U.S. and Canada included Air Ontario, Altair, Canadian Regional Airlines, Empire Airlines, Horizon Air, Norcanair, Piedmont Airlines, Pilgrim Airlines, Time Air, Transair and USAir.