FlightRecord

Greenville-Spartanburg International Airport (GSP): Delays & On-Time Performance

Data through July 2026

Greenville-Spartanburg International Airport (GSP) is a tale of two seasons: departures ran 91% on-time in November 2024 but sank to 71% in July 2026. Across the year it averages 81% against a national 78%, over roughly 39 departures a day to 23 destinations.

Departures on-time
81%
left <15 min late
Avg dep delay
16 min
Arrivals on-time
76%
Cancelled
2.3%
Destinations
23
nonstop
Airlines
10

Plan your departure from GSP

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 5 a.m.
94% on-time
Best day to fly
Tuesday
83% on-time
Most reliable airline here
Delta Air Lines
88% on-time from GSP
Cancellation risk
2.3%
above the US average
Check routes from GSP ↓Compare nearby airports ↓

Monthly on-time trend

Monthly departure on-time percentage at GSP50%75%100%August 2024: 83% on-time (1,482 flights)83Aug 2024September 2024: 86% on-time (1,358 flights)86October 2024: 90% on-time (1,465 flights)90November 2024: 91% on-time (1,345 flights)91Nov 2024December 2024: 81% on-time (1,342 flights)81January 2025: 85% on-time (1,098 flights)85February 2025: 83% on-time (1,058 flights)83Feb 2025March 2025: 83% on-time (1,213 flights)83April 2025: 84% on-time (1,144 flights)84May 2025: 78% on-time (1,265 flights)78May 2025June 2025: 71% on-time (1,227 flights)71July 2025: 72% on-time (1,316 flights)72August 2025: 83% on-time (1,214 flights)83Aug 2025September 2025: 90% on-time (1,148 flights)90October 2025: 83% on-time (1,199 flights)83November 2025: 83% on-time (1,144 flights)83Nov 2025December 2025: 75% on-time (1,153 flights)75January 2026: 83% on-time (1,109 flights)83February 2026: 83% on-time (1,056 flights)83Feb 2026March 2026: 78% on-time (1,203 flights)78April 2026: 88% on-time (1,120 flights)88May 2026: 83% on-time (1,302 flights)83May 2026June 2026: 76% on-time (1,250 flights)76July 2026: 71% on-time (1,303 flights)71

Best time of day to depart from GSP

On-time percentage by scheduled departure hour at GSP5 a.m.: 94% on-time (1,787 flights)56 a.m.: 91% on-time (4,261 flights)67 a.m.: 89% on-time (3,837 flights)78 a.m.: 90% on-time (1,648 flights)89 a.m.: 89% on-time (754 flights)910 a.m.: 85% on-time (2,054 flights)1011 a.m.: 82% on-time (2,323 flights)1112 p.m.: 81% on-time (2,289 flights)121 p.m.: 82% on-time (859 flights)132 p.m.: 81% on-time (968 flights)143 p.m.: 73% on-time (900 flights)154 p.m.: 77% on-time (2,046 flights)165 p.m.: 70% on-time (2,203 flights)176 p.m.: 69% on-time (2,299 flights)187 p.m.: 64% on-time (1,633 flights)198 p.m.: 64% on-time (953 flights)209 p.m.: 44% on-time (116 flights)21scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday79%18 min
Tuesdaybest83%15 min
Wednesday83%15 min
Thursday80%16 min
Friday79%17 min
Saturday82%15 min
Sunday78%18 min

Next: compare the busiest routes from GSP ↓

Busiest routes from GSP

RouteFlights/12moOn-timeAvg delay
GSP → ATL (Atlanta)2,81989%9 min
GSP → ORD (Chicago)1,81377%17 min
GSP → CLT (Charlotte)1,50478%20 min
GSP → DFW (Dallas/Fort Worth)1,17776%22 min
GSP → DCA (Washington)1,01769%26 min
GSP → LGA (New York)92781%17 min
GSP → EWR (Newark)77685%15 min
GSP → MIA (Miami)72682%12 min
GSP → BWI (Baltimore)71985%10 min
GSP → BNA (Nashville)66885%9 min
GSP → DTW (Detroit)55086%14 min
GSP → PHL (Philadelphia)44186%15 min
GSP → DEN (Denver)36678%15 min
GSP → HOU (Houston)17382%13 min
GSP → SFB (Sanford)13357%42 min
GSP → FLL (Fort Lauderdale)13150%53 min
GSP → PIE (St. Petersburg)13155%33 min
GSP → SRQ (Sarasota/Bradenton)10481%17 min

Compare airlines departing GSP ↓

Where flights into GSP come from

RouteFlights/12moOn-timeAvg delay
ATL (Atlanta) → GSP2,81883%11 min
ORD (Chicago) → GSP1,81575%18 min
CLT (Charlotte) → GSP1,50473%23 min
DFW (Dallas/Fort Worth) → GSP1,17570%22 min
DCA (Washington) → GSP1,01867%29 min
LGA (New York) → GSP92678%16 min
EWR (Newark) → GSP77682%14 min
MIA (Miami) → GSP72780%10 min

Most reliable routes

  1. GSP → ATL89%
  2. GSP → DTW86%
  3. GSP → PHL86%
  4. GSP → BNA85%
  5. GSP → EWR85%

Most delay-prone routes

  1. GSP → FLL50%
  2. GSP → PIE55%
  3. GSP → SFB57%
  4. GSP → DCA69%
  5. GSP → DFW76%

What causes delays at GSP

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing GSP.

  • Late-arriving aircraft44%
  • Airline operations30%
  • National airspace system20%
  • Weather6%

Alternative airports near Greer

Other airports within 120 miles, compared on departure reliability.

AirportDistanceOn-time departuresAvg delay
AVL — Asheville Regional Airport42 mi77%21 min
CLT — Charlotte Douglas International Airport75 mi75%19 min
CAE — Columbia Metropolitan Airport91 mi81%19 min
USA — Concord-Padgett Regional Airport92 mi58%41 min
AGS — Augusta Regional At Bush Field106 mi78%23 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at GSP

AirlineOn-time departuresAvg delayFlights
Delta Air Lines88%10 min6,196
Endeavor Air87%11 min814
Republic Airways84%14 min4,208
United Airlines84%19 min707
SkyWest Airlines81%18 min1,723
Southwest Airlines81%12 min3,187
Envoy Air80%14 min3,930
PSA Airlines79%21 min6,946
American Airlines75%23 min2,396
Allegiant Air59%37 min908

Frequently asked questions

How often are flights delayed at GSP?
19% of departures from Greenville-Spartanburg International Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 16 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from GSP?
Flights scheduled around 5 a.m. depart on time 94% of the time at GSP, versus 44% around 9 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at GSP?
In this dataset, July 2026 was the weakest month at GSP, with 71% of departures on time.
How often are flights cancelled at GSP?
2.3% of scheduled departures from GSP were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 31,015 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.