Route reliability record
GSP→CLT
Greer to Charlotte
- Flights
- 1,538
- Period
- September 2025 to August 2026
- Distance
- 75 mi
- Carriers
- 3
This route lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 1,538 GSP to CLT flights, with a median arrival 11 minutes early.
Best time to fly GSP to CLT: a 5am–8am departure, ideally on a Tuesday. Flights in that window arrived on time 89.3% of the time and Tuesday flights 86.9%, against 82.3% for the route overall.
Set against the rest of the country, this route's record is 5 points better than the US average of 77.3%. That gap is worth roughly 50 fewer late arrivals for every thousand flights.
Key figures
On time
82.3%
Arrivals under 15 minutes late, of 1,496 completed flights
Avg delay
114 min
Across delayed arrivals only, not all flights
Cancelled
2.67%
National rate is 1.89%
Best carrier
PSA
82.0% on time across 1,106 flights
These figures cover 1,538 flights between September 2025 and August 2026. Beyond the headline rate, 9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Which airline is most reliable on GSP to CLT
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| American Airlinesthin sample | 279 | 85.6% | 89 min | 3.23% | A− |
| PSA Airlines | 1,106 | 82.0% | 129 min | 2.71% | B |
| Envoy Airthin sample | 153 | 78.8% | 54 min | 1.31% | B |
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Best ways to make this trip
The most reliable ways to fly Greer to Charlotte
Every airline on this route and on the routes between nearby airports, ranked by how often a scheduled flight actually operated and arrived on time. 1 of the top 2 use a different airport at one end.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. AVL → CLTAsheville to Charlotte | PSA Airlines | 81.3% | 84.5% | 3.79% | 5am–8am, Wed | — |
| 2. GSP → CLTGreer to Charlotte | PSA Airlines | 79.8% | 82.0% | 2.71% | 5am–8am, Thu | — |
Success is the share of scheduled flights that operated and arrived less than 15 minutes late, so a cancelled flight counts against it. “(route)” means the best time comes from every carrier on the route rather than this airline alone.
Departure window
The best time of day to leave
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 30 points, against half a point between the best and worst carrier.
- 5am–8am664 flights89.3%
- 8am–11am354 flights87.2%
- 11am–2pm223 flights82.6%
- 2pm–5pm68 flights63.2%
- 5pm–8pm225 flights59.7%
- 8pm–5am4 flights—
Scale runs 50% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 59.7% on time, against 89.3% for the 5am–8am slot. By evening the aircraft flying these rotations have absorbed a full day of small delays and there is no slack left to recover in. The 5am–8am window is the busiest, with 664 flights scheduled in it.
Explore
Filter GSP to CLT by airline, time, month and day
Pick a breakdown and a carrier. The dashed mark on each row is the same slice for every US flight.
On GSP to CLT, the best departure window is 5am–8am at 89.3% on time and the worst is 5pm–8pm at 59.7%, a wide gap of 29.6 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am89.3%
- 8–11am87.2%
- 11am–2pm82.6%
- 2–5pm63.2%
- 5–8pm59.7%
- 8pm–5am—
best all US flightsScale 50% to 95%. Cells under 30 flights show a dash.
Across the year
When delays peak on this route
This route's year swings by 32 points from best month to worst, which is wide. An annual average tells you very little about the week you are actually flying, so read the strip rather than the headline if your dates are fixed.
July is the worst month at 64.2% on time, 32 points below September, the best at 96.0%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. November was the busiest month here, with 154 flights.
Across the week, Tuesday is the strongest day at 86.9% on time and Sunday the weakest at 76.4%, a spread of 11 points.
Delay causes
Why this route gets delayed
Late-arriving aircraft accounts for 50% of the 30,000 delay minutes carriers reported here, and the remaining four split what is left.
- 50%Late-arriving aircraft
- 37%Carrier
- 8%Extreme weather
- 4%National Airspace System
50% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 30,000 reported delay minutes here, that single category outweighs weather by 6 to one. The split is drawn from 30,220 reported delay minutes.
The largest share of delay minutes, 37%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 11,000 of the 30,000 delay minutes reported here.
Cancellations run at 2.67%, against 1.89% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here actually costs
9.2% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 75 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 69.7% on time across 1,539 flights, 13 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 13 points of difference.
The sample behind these figures is 1,538 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Work out the risk of missing a connection in CLT after this flight
What to do with this
Booking this route
Put together: the calendar is the biggest lever here, not the carrier or the hour. September runs 96.0% on time and July 64.2%, a swing of 32 points. If the dates move at all, move them out of July before you think about anything else. 1,496 completed flights over 12 months sit behind that.
Common questions
GSP to CLT questions
How often is GSP to CLT delayed?
About one flight in six arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 17.7% of the 1,538 flights in this analysis, against 22.7% nationally. Delayed flights are late by close to two hours on average.
How reliable is GSP to CLT compared with the rest of the country?
82.3% of flights arrive on time here against a national 77.3%, a difference of 5 points in its favour. That is worth a B on this site's grading scale.
What time of day has the fewest delays on GSP to CLT?
The 5am–8am departure window is the strongest at 89.3% on time. The 5pm–8pm window is the weakest at 59.7%, 30 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are July delays on GSP to CLT?
July is the weakest month at 64.2% on time, compared with 96.0% in September. Across the year that is 32 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
- CLT to GSP — the return legseparate record
- Charlotte Douglas International (CLT) delay statistics
- American Airlines on GSP to CLT85.6%
- PSA Airlines on GSP to CLT82.0%
- Envoy Air on GSP to CLT78.8%
- GSP to ATL, a related route90.1%
- MCO to CLT, a related route78.6%
- GSP to ORD, a related route75.9%
- American Airlines on-time record85.6%
- PSA Airlines on-time record82.0%
- Envoy Air on-time record78.8%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. GSP to CLT and CLT to GSP are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
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Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.