Airports › Greer (GSP) › June 2025
Airport month · June 2025
Greenville-Spartanburg International in June 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 June 2025, reporting carriers scheduled 1,227 domestic departures from Greenville-Spartanburg International (GSP). 68.9% left less than 15 minutes late and 69.5% reached their destination on time; 3.2% were cancelled.
Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so GSP departures were 2.5 points below the national departure figure.
A year earlier, in June 2024, the airport had 1,413 departures with 82.9% leaving on time: a change of −14.0 points, with flights down 13%.
Flights arriving at GSP that month were on time 58.2% of the time (1,227 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 26% and national aviation system 24%.
- On time 69.5%
- Arrived 15+ minutes late 26.7%
- Cancelled 3.2%
- Diverted 0.6%
June 2025 against a year earlier, the airport's year and the nation
| Measure | Jun 2025 | Jun 2024 | GSP, 12 months to Jul 2026 | All reported flights, Jun 2025 |
|---|---|---|---|---|
| Departed on time | 68.9% | 82.9% | 79.0% | 71.4% |
| Arrived on time | 69.5% | 81.1% | 78.9% | 70.3% |
| Cancelled | 3.2% | 1.6% | 2.7% | 1.6% |
| Average departure delay (late minutes only) | 24.2 min | 16.2 min | 16.1 min | 22.1 min |
| Scheduled departures a day | 41 | 47 | 39 | 20,386 |
| Scheduled departures | 1,227 | 1,413 | 14,201 | 611,575 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| OH PSA Airlines | 289 | 24% | 65.4% | 19.8 min | 6.6% |
| DL Delta Air Lines | 265 | 22% | 76.2% | 10.8 min | 1.9% |
| YX Republic Airline | 183 | 15% | 77.0% | 5.3 min | 6.6% |
| MQ Envoy Air | 161 | 13% | 64.6% | 14.9 min | 1.2% |
| WN Southwest Airlines | 128 | 10% | 73.4% | 9.7 min | 0.0% |
| AA American Airlines | 82 | 7% | 61.0% | 20.7 min | 1.2% |
| OO SkyWest Airlines | 49 | 4% | 69.4% | 41.9 min | 0.0% |
| G4 Allegiant Air | 40 | 3% | 47.5% | 62.2 min | 0.0% |
| UA United Airlines | 30 | 2% | 66.7% | 16.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| GSP–ATL | Greer to Atlanta | 236 | 74.2% | 14.3 min | 2.1% |
| GSP–CLT | Greer to Charlotte | 149 | 69.1% | 20.0 min | 2.0% |
| GSP–ORD | Greer to Chicago | 125 | 72.8% | 10.2 min | 1.6% |
| GSP–DFW | Greer to Dallas/Fort Worth | 116 | 56.0% | 24.9 min | 2.6% |
| GSP–DCA | Greer to Washington | 90 | 57.8% | 17.9 min | 14.4% |
| GSP–LGA | Greer to New York | 77 | 64.9% | 14.2 min | 11.7% |
| GSP–DTW | Greer to Detroit | 74 | 79.7% | 20.1 min | 0.0% |
| GSP–EWR | Greer to Newark | 64 | 85.9% | -1.0 min | 4.7% |
| GSP–MIA | Greer to Miami | 64 | 65.6% | 16.2 min | 1.6% |
| GSP–BWI | Greer to Baltimore | 60 | 76.7% | 9.4 min | 0.0% |
| GSP–DEN | Greer to Denver | 38 | 60.5% | 19.9 min | 0.0% |
| GSP–PHL | Greer to Philadelphia | 34 | 82.4% | 2.7 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left GSP on time in June 2025?
68.9% of 1,227 scheduled domestic departures left less than 15 minutes late, and 69.5% reached their destination on time. The national figures that month were 71.4% and 70.3%.
How does that compare with a year earlier?
In June 2024, 82.9% of 1,413 departures left on time and 1.6% were cancelled, against 68.9% and 3.2% in June 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 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.