routeloads.
U.S. DOT T-100 major U.S. carriers

Airlines, by the numbers

Major U.S. reporting carriers, ranked by who flies the most people, fills the most seats, and reaches the most cities. Higher seat occupancy means fuller airplanes. T-100 totals follow each reporting/operating certificate; affiliates filed under other certificates are not automatically rolled into the passenger-facing brand. Click a carrier for its dossier.

Head-to-head

Compare airline seat occupancy over time

Select reporting carriers to see monthly passengers ÷ seats on one shared axis. Lines use carrier identity colors; the dashed line is the weighted average across the certificates in this BTS slice.

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Rank by

# Carrier Seat occupancy Passengers Seats Departures Routes
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