FLIGHTLINE INTEL COMMERCIAL AVIATION INTELLIGENCE
Route T-100 Intelligence

SEA ↔ SLC

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

528,639
2026 passengers
3,955
2026 departures
81.4%
2026 market load factor

2026 airlines

CodeAirlinePassengersDeparturesLoad factor
DLDelta Air Lines Inc.316,3792,18783.5%
ASAlaska Airlines Inc.184,0491,35879.3%
OOSkyWest Airlines Inc.17,83231674.5%
F9Frontier Airlines Inc.7,1154665.1%
QXHorizon Air2,7854189.4%
WNSouthwest Airlines Co.338296.6%
AAAmerican Airlines Inc.141182.0%
FXFederal Express Corporation04

Annual history

YearPassengersPassengers/daySeatsDeparturesLoad factor
2015952,5472,609.71,126,7377,79784.5%
2016988,2992,700.31,257,2508,57978.6%
2017973,6182,667.41,226,1908,30579.4%
20181,033,8522,832.51,292,9708,40780.0%
20191,096,6623,004.61,311,8128,78083.6%
2020460,9181,259.3949,9526,54648.5%
2021875,4162,398.41,304,5428,49267.1%
2022923,2882,529.61,141,1487,11580.9%
2023990,9002,714.81,206,4187,39882.1%
20241,053,4552,878.31,289,6537,99881.7%
20251,088,6872,982.71,333,1388,30381.7%
2026528,6392,920.7649,4063,95581.4%
Source: U.S. Department of Transportation, Bureau of Transportation Statistics T-100 Segment data.