ORIGIN AIRPORT REPORT
STL
St. Louis, MO (STL) departure reliability
Of 63,448 scheduled reportable flights departing STL, 76.8% arrived on time, 13.9% arrived at least 30 minutes late, and 1.3% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALGenerally reliable
76.8%arrived on time
13.9%30+ min late
1.3%cancelled
63,448scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from STL had the largest sample?
STL to ATL was STL's largest published route sample, with 3,705 scheduled flights and a 83.6% on-time rate during July 2025–June 2026.
STL→ATLSt. Louis, MO (STL) to Atlanta, GA (ATL)3,705 flights analyzedGenerally reliable83.6%on timeSTL→DENSt. Louis, MO (STL) to Denver, CO (DEN)3,655 flights analyzedGenerally reliable74.4%on timeSTL→ORDSt. Louis, MO (STL) to Chicago, IL (ORD)3,070 flights analyzedVariable68.7%on timeSTL→LGASt. Louis, MO (STL) to New York, NY (LGA)2,645 flights analyzedVariable71.6%on timeSTL→MCOSt. Louis, MO (STL) to Orlando, FL (MCO)2,497 flights analyzedGenerally reliable76.9%on timeSTL→DCASt. Louis, MO (STL) to Washington, DC (DCA)2,414 flights analyzedVariable70.4%on timeSTL→DFWSt. Louis, MO (STL) to Dallas/Fort Worth, TX (DFW)2,380 flights analyzedVariable71.7%on timeSTL→PHXSt. Louis, MO (STL) to Phoenix, AZ (PHX)2,284 flights analyzedGenerally reliable74.9%on timeSTL→LASSt. Louis, MO (STL) to Las Vegas, NV (LAS)2,066 flights analyzedGenerally reliable76.1%on timeSTL→DALSt. Louis, MO (STL) to Dallas, TX (DAL)1,925 flights analyzedGenerally reliable74.6%on timeSTL→DTWSt. Louis, MO (STL) to Detroit, MI (DTW)1,905 flights analyzedLower disruption80.8%on timeSTL→MSPSt. Louis, MO (STL) to Minneapolis, MN (MSP)1,896 flights analyzedGenerally reliable79.0%on timeSTL→CLTSt. Louis, MO (STL) to Charlotte, NC (CLT)1,827 flights analyzedLower disruption82.3%on timeSTL→MDWSt. Louis, MO (STL) to Chicago, IL (MDW)1,704 flights analyzedGenerally reliable78.7%on timeSTL→BOSSt. Louis, MO (STL) to Boston, MA (BOS)1,610 flights analyzedVariable69.3%on time
Which airline was most reliable departing STL?
Among qualifying STL airline departure results, Delta Air Lines had the highest on-time rate: 86.4% of 5,323 flights. SkyWest Airlines was lowest at 67.4% across 2,359 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Southwest Airlines | 39,703 | 76.4% | 13.8% | 0.7% |
| American Airlines | 5,833 | 78.6% | 14.1% | 2.0% |
| Delta Air Lines | 5,323 | 86.4% | 8.3% | 1.6% |
| Republic Airways | 3,188 | 75.8% | 14.3% | 4.4% |
| SkyWest Airlines | 2,359 | 67.4% | 21.7% | 2.5% |
| United Airlines | 2,290 | 73.1% | 16.8% | 0.9% |
| Envoy Air | 1,592 | 75.7% | 15.5% | 2.2% |
| Frontier Airlines | 1,337 | 71.0% | 18.0% | 2.3% |
| PSA Airlines | 874 | 71.1% | 16.1% | 5.6% |
| Alaska Airlines | 830 | 80.1% | 10.1% | 1.0% |
| Spirit Airlines | 119 | 75.6% | 17.6% | 0.8% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.