What happened: Austin-Bergstrom handled a record outbound push Monday as Formula 1 fans left town after the United States Grand Prix at Circuit of the Americas. Airport officials warned of an exceptionally busy terminal and urged travelers to allow extra time. The surge closed a race weekend anchored by Sunday's Grand Prix in Austin.

Why it matters: The Grand Prix is one of Austin's largest annual visitor events, concentrating hotel stays and flights into a single weekend. A record travel day measures that off-track impact in passenger volume. It also marks a stress test for airport staffing and operations during event turnover.

What to watch: Final passenger totals will confirm the size of the record. Formula 1 moves on after closing its Austin weekend.