Airports › Greer (GSP) › April 2026
Airport month · April 2026
Greenville-Spartanburg International in April 2026
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 April 2026, reporting carriers scheduled 1,120 domestic departures from Greenville-Spartanburg International (GSP). 87.1% left less than 15 minutes late and 86.2% reached their destination on time; 1.3% were cancelled.
Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so GSP departures were 8.0 points above the national departure figure.
A year earlier, in April 2025, the airport had 1,144 departures with 83.2% leaving on time: a change of +3.9 points, with flights down 2%.
Flights arriving at GSP that month were on time 83.9% of the time (1,121 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 35% and national aviation system 18%.
- On time 86.2%
- Arrived 15+ minutes late 12.2%
- Cancelled 1.3%
- Diverted 0.3%
April 2026 against a year earlier, the airport's year and the nation
| Measure | Apr 2026 | Apr 2025 | GSP, 12 months to Jul 2026 | All reported flights, Apr 2026 |
|---|---|---|---|---|
| Departed on time | 87.1% | 83.2% | 79.0% | 79.1% |
| Arrived on time | 86.2% | 83.4% | 78.9% | 78.9% |
| Cancelled | 1.3% | 0.8% | 2.7% | 0.9% |
| Average departure delay (late minutes only) | 10.3 min | 12.9 min | 16.1 min | 14.5 min |
| Scheduled departures a day | 37 | 38 | 39 | 19,931 |
| Scheduled departures | 1,120 | 1,144 | 14,201 | 597,919 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DL Delta Air Lines | 267 | 24% | 93.3% | -12.3 min | 1.5% |
| OH PSA Airlines | 183 | 16% | 86.3% | -6.3 min | 1.1% |
| MQ Envoy Air | 176 | 16% | 85.2% | 6.8 min | 1.1% |
| YX Republic Airline | 171 | 15% | 81.3% | 1.8 min | 1.2% |
| WN Southwest Airlines | 150 | 13% | 92.7% | -7.5 min | 0.0% |
| AA American Airlines | 89 | 8% | 79.8% | -1.1 min | 4.5% |
| OO SkyWest Airlines | 46 | 4% | 76.1% | -3.4 min | 2.2% |
| G4 Allegiant Air | 37 | 3% | 62.2% | 59.9 min | 0.0% |
| UA United Airlines | 1 | 0% | 100.0% | -14.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| GSP–ATL | Greer to Atlanta | 241 | 93.8% | -12.6 min | 1.7% |
| GSP–ORD | Greer to Chicago | 142 | 77.5% | 1.4 min | 3.5% |
| GSP–CLT | Greer to Charlotte | 125 | 93.6% | -11.5 min | 0.0% |
| GSP–BNA | Greer to Nashville | 90 | 91.1% | -6.4 min | 0.0% |
| GSP–DFW | Greer to Dallas/Fort Worth | 89 | 77.5% | 0.4 min | 3.4% |
| GSP–LGA | Greer to New York | 83 | 77.1% | 5.8 min | 2.4% |
| GSP–DCA | Greer to Washington | 80 | 78.8% | 4.8 min | 1.3% |
| GSP–BWI | Greer to Baltimore | 60 | 95.0% | -9.2 min | 0.0% |
| GSP–MIA | Greer to Miami | 60 | 83.3% | 25.1 min | 0.0% |
| GSP–DEN | Greer to Denver | 30 | 90.0% | -14.3 min | 0.0% |
| GSP–PHL | Greer to Philadelphia | 30 | 93.3% | -10.9 min | 0.0% |
| GSP–EWR | Greer to Newark | 27 | 96.3% | -11.0 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left GSP on time in April 2026?
87.1% of 1,120 scheduled domestic departures left less than 15 minutes late, and 86.2% reached their destination on time. The national figures that month were 79.1% and 78.9%.
How does that compare with a year earlier?
In April 2025, 83.2% of 1,144 departures left on time and 0.8% were cancelled, against 87.1% and 1.3% in April 2026.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2026; 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.