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Airport · GSP · Greer, South Carolina

Greer, SC

According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Greer, SC (GSP) ranks #86 of 382 tracked US airports by total flights (most flights = #1). Greer, SC posts above-median on-time performance among the 382 tracked U.S. airports, as a high-volume U.S. airport.

Data updated 2026-06-13

83.5%
On-time
Top 48%
on-time, US airports
77 min
Delay when late
1.12%
Cancelled
#86 of 382
Corpus placement
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GSP on-time rate vs. the national average

Ahead of the U.S. average across all 382 tracked airports.

0%100%U.S. average79%83.5%

Delay Cause Breakdown

Top delay cause: Late Aircraft. Total delay minutes: 885,123.

Late Aircraft 40.8% (361,376 min)
Carrier 34.1% (302,158 min)
NAS (National Aviation System) 19.6% (173,515 min)
Weather 5.3% (47,084 min)
Security 0.1% (990 min)

GSP - seasonal on-time pattern

Best: September (94.8%) · worst: July (89.4%)

88%90%92%94%96% JanFebMarAprMayJunJulAugSepOctNovDec 92.1%

GSP - on-time rate by year

2020–2025, year-over-year trend.

88%90%92%94%96%98% 202020212022202320242025 95.7% 90.4% ▼ -5.5%

GSP - taxi-out and taxi-in (monthly)

Average taxi-out 16.3 min · taxi-in 5.2 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).

14 min15 min16 min17 min18 min19 min Jan 24Dec 25 17.2 min 16.6 min ▼ -3.5%

GSP's average taxi-out (16.3 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 15.0 min (June 2024) to 17.8 min (November 2024).

Cancellation & Diversion Analysis

Flight disruption statistics for Greer, SC.

Cancellation Rate

1.12%

1,749 of 155,526 flights

Diversion Rate

0.11%

164 of 155,526 flights

Delay Rate

16.5%

25,645 of 155,526 flights

Top Routes from GSP

Busiest routes to and from Greer, SC.

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Route Flights On-Time Distance
GSP (Greer) → ATL (Atlanta) 18,285 91.8% 153 mi
ATL (Atlanta) → GSP (Greer) 18,284 86.7% 153 mi
GSP (Greer) → CLT (Charlotte) 14,768 82.2% 75 mi
CLT (Charlotte) → GSP (Greer) 14,762 80.6% 75 mi
GSP (Greer) → ORD (Chicago) 6,603 81.7% 577 mi
ORD (Chicago) → GSP (Greer) 6,594 79.6% 577 mi
DFW (Dallas/Fort Worth) → GSP (Greer) 5,828 74.8% 862 mi
GSP (Greer) → DFW (Dallas/Fort Worth) 5,828 79.3% 862 mi
LGA (New York) → GSP (Greer) 5,399 82.3% 610 mi
GSP (Greer) → LGA (New York) 5,397 85.6% 610 mi
DCA (Washington) → GSP (Greer) 4,568 76% 396 mi
GSP (Greer) → DCA (Washington) 4,567 78.8% 396 mi
EWR (Newark) → GSP (Greer) 3,314 82.9% 594 mi
GSP (Greer) → EWR (Newark) 3,273 84.8% 594 mi
DTW (Detroit) → GSP (Greer) 2,873 84.3% 508 mi
GSP (Greer) → DTW (Detroit) 2,871 89.8% 508 mi
PHL (Philadelphia) → GSP (Greer) 2,337 77.7% 515 mi
BWI (Baltimore) → GSP (Greer) 2,270 78.4% 426 mi
GSP (Greer) → BWI (Baltimore) 2,270 85% 426 mi
GSP (Greer) → PHL (Philadelphia) 2,248 85.5% 515 mi

Nationwide peers by on-time rate & flight volume

Two PlainFlights-derived comparison paths for Greer, SC, both outside South Carolina so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.

Similar on-time rate

Nearest out-of-state BTS on-time rate (this airport: 83.5%).

Casper, WY

Casper, WY

83.5% on-time 20,592 flights

Latrobe, PA

Latrobe, PA

83.5% on-time 8,539 flights

Lexington, KY

Lexington, KY

83.6% on-time 91,507 flights

Burlington, VT

Burlington, VT

83.4% on-time 79,685 flights

Similar flight volume

Nearest out-of-state total flights (this airport: 155,526).

Knoxville, TN

Knoxville, TN

157,494 flights 81.9% on-time

Palm Springs, CA

Palm Springs, CA

159,999 flights 83.7% on-time

Providence, RI

Providence, RI

160,073 flights 81.2% on-time

Lihue, HI

Lihue, HI

162,570 flights 86.7% on-time

Other Airports in South Carolina

Compare performance with other South Carolina airports.

CHS 81.4%

Charleston, SC

Charleston · 276,798 flights
MYR 82.1%

Myrtle Beach, SC

Myrtle Beach · 171,781 flights
CAE 84.3%

Columbia, SC

Columbia · 67,973 flights
HHH 83.5%

Hilton Head, SC

Hilton Head · 27,234 flights
FLO 92.5%

Florence, SC

Florence · 226 flights

GSP delay-share reading

The standout signal at Greer, SC is the delay mix: Late Aircraft owns 40.8% of 885,123 delay minutes across 155,526 BTS flights. The on-time headline is 83.5% (4.5 pts above the 79% national average), with 25,645 delayed and 1,749 cancelled (1.12%).

Delay minutes concentrate in Late Aircraft (40.8% late-aircraft, 34.1% carrier, 19.6% NAS, 5.3% weather, 0.1% security). As a busy airport, that mix matters more for connection planning than for a thin schedule.

On the multi-year calendar, GSP is strongest in September (94.8% on-time) and weakest in July (89.4%), a 5.4-point swing. Volume peaks in October (~2,282 flights/month). The busiest connecting route is to ATL (Atlanta) at 91.8% on-time. Field definitions: on-time performance explained.

Statewide aggregates for South Carolina: South Carolina flight data.

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025). Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.

Read our methodology - how this data is sourced, computed, and verified.

Using GSP's data

GSP's on-time book is mid-pack; month and delay-cause mix move more than the headline rate.

  • Check the busiest route from GSP before you book a connection. See top routes
  • Travel in September rather than July if your dates are flexible. Seasonal patterns
  • Gate-to-wheels taxi-out averages 16.3 min here; check the monthly series before a tight connection. Taxi times

On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.