FLIGHTLINE INTEL COMMERCIAL AVIATION INTELLIGENCE
Route T-100 Intelligence

PHX ↔ STL

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

312,131
2026 passengers
2,394
2026 departures
80.7%
2026 market load factor

2026 airlines

CodeAirlinePassengersDeparturesLoad factor
WNSouthwest Airlines Co.231,6991,66881.4%
AAAmerican Airlines Inc.68,49857981.5%
F9Frontier Airlines Inc.6,4035858.3%
MQEnvoy Air3,7486082.2%
OOSkyWest Airlines Inc.1,6972879.7%
UAUnited Air Lines Inc.86143.0%

Annual history

YearPassengersPassengers/daySeatsDeparturesLoad factor
2015568,1511,556.6653,3944,62587.0%
2016523,0931,429.2669,1924,57678.2%
2017509,7201,396.5610,5004,08383.5%
2018497,8651,364.0601,6543,89882.7%
2019506,3141,387.2599,7313,73684.4%
2020272,263743.9504,3323,16154.0%
2021445,0701,219.4556,7173,65879.9%
2022505,0381,383.7589,3203,70285.7%
2023498,3501,365.3600,1293,77083.0%
2024598,8901,636.3759,3824,79878.9%
2025540,6911,481.3701,8574,44177.0%
2026312,1311,724.5386,5412,39480.7%
Source: U.S. Department of Transportation, Bureau of Transportation Statistics T-100 Segment data.