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Busiest air routes in North America
The scheduled passenger and cargo routes that move the most people and freight across, out of, and into the United States, Canada, and Mexico. Annual volume and the carriers operating each route, drawn from the US DOT BTS T-100 segment data and its Canadian and Mexican analogues.
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What "annual volume" measures
For passenger routes, the number is the total passengers flown in both directions in the most recent full calendar year, summed across every carrier that operated the route. For cargo routes, the number is the total freight tonnes carried in both directions over the same period. Mail tonnage is excluded; passenger-belly cargo (freight on passenger aircraft) is included on the cargo line for a given segment when carriers report it under BTS T-100's freight field.
The list orders routes by annual volume by default. Click a column header to re-sort. Click any IATA code on a route to open the per-airport profile under /aviation/airports/ when an airport-side profile exists; otherwise the code renders as plain text.
About this list
Inclusion criterion. Scheduled commercial passenger or cargo routes with at least one endpoint at a major airport in the United States, Canada, or Mexico. Includes domestic routes within each country, trans-border routes (US ↔ Canada, US ↔ Mexico, Canada ↔ Mexico), and long-haul international routes where one endpoint is in North America. Excludes private aviation, military, charter, and unscheduled service.
Data freshness. Reference volume figures are sourced from the US DOT BTS T-100 Domestic Segment, BTS T-100 International Segment, and BTS T-100 Market datasets for the US side; Statistics Canada's Air Carrier Operations Survey for Canadian-domestic and Canadian-international segments; and AFAC's Estadísticas de Operación Aérea for Mexican segments. BTS publishes T-100 with a ~3-month lag, so the most recent month covered here trails today by a quarter. Re-verified on a recurring monthly cadence aligned to the BTS release schedule.
What is intentionally excluded. Forward-looking schedules and per-flight pricing (paid feeds only — OAG, Cirium, Amadeus, Sabre, Travelport). Airline-by-airline route breakdowns are on the per-carrier profile under /aviation/airlines/ rather than here. Per-route detail pages (carrier-share charts, monthly time-series) are a planned v2 enhancement; v1 surfaces the route-level roster only.