Air travel in United States

United States is one slice of a global network covering 6,071 airports across 235 countries. The OpenFlights dataset puts 1,251 airports inside this country with valid IATA codes, served by 120 active airlines registered locally. Together those airports show 13,021 distinct scheduled departures in the routes table. That figure is a rough proxy for how well-connected the country's airports are, even though it's not a literal count of flights.

Airports below are sorted by scheduled-route volume, so the country's main hubs sit at the top. Smaller regional airports follow, including the seasonal-only and domestic-only fields. Each row links through to a dedicated airport page with destinations served and the airlines operating there.

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The departures column counts the number of distinct routes filed in the OpenFlights schedule from each airport. A hub with hundreds of departures is a major connecting point; a regional field with a single-digit count typically supports a small number of feeder flights to the nearest hub. The list does not weight routes by frequency or seat capacity, so two airports with similar departure counts can carry very different passenger volumes in practice.

For the most current operational picture, cross-reference an airport page with the airline's own website. The underlying dataset is community-maintained and reflects scheduled-route relationships rather than a live timetable.

Country pages on AeroRoute Guide are short on purpose. They answer one travel-planning question: which airports and carriers are worth knowing in United States. If you're routing a trip, start at the top of the airports table and work down. If you're researching a specific airline, jump from the airlines table to the carrier profile for its full destination map. Cross-links between countries, hubs, and routes mean a single click usually moves you from a high-level overview into operational detail. When the data shows zero registered carriers, the country isn't unreachable. It almost always means scheduled service comes from foreign airlines based elsewhere, and those flights show up on the relevant airport pages.