FLIGHTLINE INTEL COMMERCIAL AVIATION INTELLIGENCE
Route T-100 Intelligence

DEN ↔ SEA

Two-way market traffic, capacity, airline participation and annual performance.

822,552
2026 passengers
6,238
2026 departures
86.1%
2026 market load factor

2026 airlines

CodeAirlinePassengersDeparturesLoad factor
UAUnited Air Lines Inc.261,7551,77786.0%
ASAlaska Airlines Inc.216,4921,41587.5%
WNSouthwest Airlines Co.180,1011,19888.3%
F9Frontier Airlines Inc.69,47237384.1%
DLDelta Air Lines Inc.65,03564378.0%
OOSkyWest Airlines Inc.29,37844287.9%
AAAmerican Airlines Inc.170198.8%
SYSun Country Airlines d/b/a MN Airlines99226.6%
QXHorizon Air50165.8%
ABXABX Air Inc01
8CAir Transport International0385

Annual history

YearPassengersPassengers/daySeatsDeparturesLoad factor
20151,616,8204,429.61,837,69812,88888.0%
20161,757,3094,801.42,032,56314,20586.5%
20171,772,5194,856.21,993,00213,78188.9%
20181,874,2035,134.82,106,38513,64489.0%
20191,866,3545,113.32,104,85213,57688.7%
2020829,4792,266.31,502,8559,51955.2%
20211,463,6014,009.91,851,66212,44379.0%
20221,606,7994,402.21,842,09411,95587.2%
20231,840,4935,042.42,158,90113,24285.3%
20241,912,8905,226.52,210,56314,02986.5%
20251,826,4445,004.02,100,12313,41387.0%
2026822,5524,544.5955,8866,23886.1%
Source: U.S. Department of Transportation, Bureau of Transportation Statistics T-100 Segment data.