Greenville/Greer/Spartanburg, SC · Airport profile
GSP
Greenville-Spartanburg International Airport
GSP right now
Live conditions where a permitted source publishes them, and the historical record where none does.
FlyerIntel does not currently have live operational data for this airport.
85.5% leave on time
13:00–13:59 local · 1,005 departures on record
When flights run late in this hour, most of the delay is attributed to late-arriving aircraft.
Historical pattern for GSP from US DOT BTS — not a live reading.
No current observation is available for this airport.
FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.
Airport reliability
Best time to fly from GSP
On-time arrival rate by scheduled local departure time.
Flights departing 5–9 AM arrived on time 88.9% of the time, against 50.8% for 9 PM–5 AM departures — a gap of 38.1 percentage points.
By departure window
By departure hour
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Buckets with fewer than 120 flights are not scored.
What to expect at GSP
How busy the airport is through the day, from scheduled departure volume.
Scheduled departures by hour
The busiest hour is 6 AM, with about 6 departures a day, against roughly 0 at 9 PM. Counterintuitively, that peak is also more punctual than a typical hour here — early banks fly aircraft that have been on the ground overnight rather than ones inheriting the day’s delays.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Taxi-out is the time between leaving the gate and lifting off, averaged across departures and weighted by hour.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 3.3 percentage points.
By month
July is historically the weakest month and November the strongest, a spread of 12.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Airlines at GSP
Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.
| Carrier | Departures | On time | Cancelled | Median delay |
|---|---|---|---|---|
| PSA Airlines OH | 10,187 | 79.5% | 2.08% | -7 min |
| Delta Air Lines DL | 8,462 | 90.6% | 1.19% | -13 min |
| Republic Airways YX | 5,998 | 84.0% | 3.67% | -10 min |
| Envoy Air MQ | 4,931 | 79.0% | 1.36% | -5 min |
| Southwest Airlines WN | 4,408 | 86.0% | 0.68% | -9 min |
| American Airlines AA | 3,564 | 74.4% | 2.41% | -5 min |
| SkyWest Airlines OO | 2,656 | 80.6% | 2.03% | -7 min |
| Endeavor Air 9E | 1,938 | 87.0% | 2.58% | -13 min |
| United Airlines UA | 1,290 | 84.7% | 0.70% | -9 min |
| Allegiant Air G4 | 1,139 | 60.7% | 1.49% | 2 min |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Carriers with fewer than 500 departures are not listed.
Routes from GSP
Ranked by FlyerIntel Route Reliability Score.
Busiest routes
| Destination | Flights | On time | Score |
|---|---|---|---|
| GSP → ATL Atlanta | 8,881 | 90.1% | 84 |
| GSP → CLT Charlotte | 7,481 | 79.0% | 63 |
| GSP → ORD Chicago | 4,403 | 78.9% | 62 |
| GSP → LGA New York | 3,877 | 83.9% | 57 |
| GSP → DFW Dallas–Fort Worth | 3,438 | 76.0% | 51 |
| GSP → DCA Washington | 3,018 | 74.5% | 42 |
| GSP → EWR Newark | 2,394 | 87.3% | 65 |
| GSP → BWI Baltimore | 1,831 | 85.1% | 81 |
| GSP → DTW Detroit | 1,700 | 87.3% | 74 |
| GSP → MIA Miami | 1,664 | 83.4% | 77 |
| GSP → PHL Philadelphia | 1,471 | 87.3% | 72 |
| GSP → DEN Denver | 1,131 | 81.3% | 72 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026 · Only routes with at least 750 flights are ranked.
Reliability over time
On-time arrival rate for departures, by month.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – June 2026
Data and sources
Historical statistics
Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – June 2026, comprising 44,573 departures from GSP. A flight counts as delayed when it arrives 15 or more minutes after schedule.
Live conditions
Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.