Airports › Greer (GSP) › August 2025
Airport month · August 2025
Greenville-Spartanburg International in August 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In August 2025, reporting carriers scheduled 1,214 domestic departures from Greenville-Spartanburg International (GSP). 81.5% left less than 15 minutes late and 80.5% reached their destination on time; 1.6% were cancelled.
Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so GSP departures were 4.7 points above the national departure figure.
A year earlier, in August 2024, the airport had 1,482 departures with 81.1% leaving on time: a change of +0.4 points, with flights down 18%.
Flights arriving at GSP that month were on time 75.7% of the time (1,215 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 24% and national aviation system 23%.
- On time 80.5%
- Arrived 15+ minutes late 17.5%
- Cancelled 1.6%
- Diverted 0.5%
August 2025 against a year earlier, the airport's year and the nation
| Measure | Aug 2025 | Aug 2024 | GSP, 12 months to Jul 2026 | All reported flights, Aug 2025 |
|---|---|---|---|---|
| Departed on time | 81.5% | 81.1% | 79.0% | 76.8% |
| Arrived on time | 80.5% | 79.4% | 78.9% | 76.3% |
| Cancelled | 1.6% | 2.2% | 2.7% | 1.1% |
| Average departure delay (late minutes only) | 14.6 min | 14.6 min | 16.1 min | 17.6 min |
| Scheduled departures a day | 41 | 49 | 39 | 20,079 |
| Scheduled departures | 1,214 | 1,482 | 14,201 | 602,378 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DL Delta Air Lines | 284 | 23% | 88.4% | -4.5 min | 0.4% |
| OH PSA Airlines | 277 | 23% | 80.5% | 1.6 min | 2.5% |
| YX Republic Airline | 207 | 17% | 83.1% | 5.0 min | 1.9% |
| WN Southwest Airlines | 122 | 10% | 86.1% | -2.8 min | 0.0% |
| MQ Envoy Air | 121 | 10% | 72.7% | 4.8 min | 2.5% |
| AA American Airlines | 80 | 7% | 62.5% | 41.2 min | 3.8% |
| OO SkyWest Airlines | 60 | 5% | 81.7% | 10.7 min | 1.7% |
| G4 Allegiant Air | 32 | 3% | 59.4% | 47.5 min | 0.0% |
| UA United Airlines | 31 | 3% | 64.5% | 21.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| GSP–ATL | Greer to Atlanta | 252 | 88.1% | -2.7 min | 0.4% |
| GSP–ORD | Greer to Chicago | 147 | 78.9% | -2.6 min | 4.1% |
| GSP–CLT | Greer to Charlotte | 119 | 84.0% | 1.0 min | 0.8% |
| GSP–DFW | Greer to Dallas/Fort Worth | 107 | 62.6% | 33.6 min | 3.7% |
| GSP–DCA | Greer to Washington | 83 | 73.5% | 8.3 min | 4.8% |
| GSP–EWR | Greer to Newark | 82 | 79.3% | 12.8 min | 1.2% |
| GSP–LGA | Greer to New York | 78 | 79.5% | 12.8 min | 2.6% |
| GSP–DTW | Greer to Detroit | 65 | 90.8% | -8.1 min | 0.0% |
| GSP–MIA | Greer to Miami | 63 | 84.1% | -0.2 min | 0.0% |
| GSP–BWI | Greer to Baltimore | 62 | 87.1% | -1.8 min | 0.0% |
| GSP–DEN | Greer to Denver | 33 | 60.6% | 20.9 min | 0.0% |
| GSP–BNA | Greer to Nashville | 31 | 93.5% | -9.9 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left GSP on time in August 2025?
81.5% of 1,214 scheduled domestic departures left less than 15 minutes late, and 80.5% reached their destination on time. The national figures that month were 76.8% and 76.3%.
How does that compare with a year earlier?
In August 2024, 81.1% of 1,482 departures left on time and 2.2% were cancelled, against 81.5% and 1.6% in August 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for GSP · methodology · corrections.