FLIGHTLINE INTEL COMMERCIAL AVIATION INTELLIGENCE
Route T-100 Intelligence

BOS ↔ STL

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

135,042
2026 passengers
1,444
2026 departures
73.4%
2026 market load factor

2026 airlines

CodeAirlinePassengersDeparturesLoad factor
WNSouthwest Airlines Co.97,81478773.0%
YXRepublic Airline18,67634072.4%
MQEnvoy Air18,33831576.6%
AAAmerican Airlines Inc.125197.7%
DLDelta Air Lines Inc.89168.5%

Annual history

YearPassengersPassengers/daySeatsDeparturesLoad factor
2015156,979430.1209,0581,45175.1%
2016187,590512.5222,6331,52084.3%
2017257,158704.5302,2961,99085.1%
2018276,536757.6333,7122,10882.9%
2019273,371749.0362,3462,30875.4%
202071,172194.5183,1791,12338.9%
2021140,117383.9178,6551,17378.4%
2022300,469823.2400,2872,81875.1%
2023308,797846.0368,5882,89383.8%
2024336,730920.0409,1153,12982.3%
2025325,579892.0412,4113,18678.9%
2026135,042746.1183,9841,44473.4%
Source: U.S. Department of Transportation, Bureau of Transportation Statistics T-100 Segment data.