This Paper examines the demand for air travel in Australia and forecasts domestic passenger and freight aviation demand to the end of the century at five-year intervals. The analysis begins by reviewing recent trends in patronage and air fares. It then identifies other major factors affecting demand as background for the empirical analysis. The study period for the empirical analysis covers the past eight years, 1977 to 1984, using quarterly data. The models provide, among other things, estimates of price and income elasticities of demand (or demand responses) for air travel in Australia. Finally, the Paper presents forecast growth rates for air travel subject to different future growth scenarios to the year 2000.