ORIGIN AIRPORT REPORT
GSP
Greer, SC (GSP) departure reliability
Of 14,214 scheduled reportable flights departing GSP, 78.8% arrived on time, 12.3% arrived at least 30 minutes late, and 2.7% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALVariable
78.8%arrived on time
12.3%30+ min late
2.7%cancelled
14,214scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from GSP had the largest sample?
GSP to ATL was GSP's largest published route sample, with 2,818 scheduled flights and a 88.9% on-time rate during July 2025–June 2026.
GSP→ATLGreer, SC (GSP) to Atlanta, GA (ATL)2,818 flights analyzedGenerally reliable88.9%on timeGSP→ORDGreer, SC (GSP) to Chicago, IL (ORD)1,797 flights analyzedVariable71.6%on timeGSP→CLTGreer, SC (GSP) to Charlotte, NC (CLT)1,532 flights analyzedGenerally reliable81.9%on timeGSP→DFWGreer, SC (GSP) to Dallas/Fort Worth, TX (DFW)1,178 flights analyzedVariable72.6%on timeGSP→DCAGreer, SC (GSP) to Washington, DC (DCA)1,017 flights analyzedHigher disruption63.6%on timeGSP→LGAGreer, SC (GSP) to New York, NY (LGA)934 flights analyzedHigher disruption71.2%on timeGSP→EWRGreer, SC (GSP) to Newark, NJ (EWR)769 flights analyzedHigher disruption81.5%on timeGSP→MIAGreer, SC (GSP) to Miami, FL (MIA)725 flights analyzedGenerally reliable79.4%on timeGSP→BWIGreer, SC (GSP) to Baltimore, MD (BWI)719 flights analyzedGenerally reliable88.2%on timeGSP→BNAGreer, SC (GSP) to Nashville, TN (BNA)607 flights analyzedLower disruption84.8%on timeGSP→DTWGreer, SC (GSP) to Detroit, MI (DTW)599 flights analyzedVariable83.8%on timeGSP→PHLGreer, SC (GSP) to Philadelphia, PA (PHL)441 flights analyzedGenerally reliable87.1%on timeGSP→DENGreer, SC (GSP) to Denver, CO (DEN)375 flights analyzedGenerally reliable77.1%on time
Which airline was most reliable departing GSP?
Among qualifying GSP airline departure results, Delta Air Lines had the highest on-time rate: 88.8% of 3,213 flights. Allegiant Air was lowest at 57.3% across 473 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| Delta Air Lines | 3,213 | 88.8% | 6.7% | 1.6% |
| PSA Airlines | 2,850 | 76.2% | 14.3% | 3.1% |
| Republic Airways | 2,089 | 76.7% | 12.5% | 5.0% |
| Envoy Air | 1,832 | 74.7% | 13.5% | 2.1% |
| Southwest Airlines | 1,541 | 85.7% | 6.9% | 1.1% |
| American Airlines | 1,096 | 73.2% | 16.1% | 3.7% |
| SkyWest Airlines | 896 | 71.7% | 17.0% | 3.9% |
| Allegiant Air | 473 | 57.3% | 32.6% | 0.8% |
| United Airlines | 224 | 76.8% | 14.3% | 0.0% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.