US Air Traffic in 1991
513.7M passengers · -3.1% vs 1990
434.2MDomestic
79.5MInternational
6.7MFlights
56%Load factor
Busiest airports (among today's top 25)
Traffic among today's largest carriers
Figures cover flights touching the United States and its territories (US DOT BTS T-100) — not global totals.
Source: U.S. DOT Bureau of Transportation Statistics, T-100 · United States Government public domain.