Carrier route record
OHCLT→GSP
PSA Airlines · Charlotte to Greer
- Flights
- 1,090
- Period
- July 2025 to June 2026
- Share of route
- 71%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with PSA Airlines.
PSA on CLT to GSP draws a C. About one flight in three arrives at least 15 minutes late, and the typical late arrival is a little over an hour behind schedule. Build slack into anything you connect to. That rests on 1,090 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.6%, so PSA on CLT to GSP runs 11 points behind the country as a whole. Across a thousand flights that is about 107 extra late arrivals.
Key figures
On time
66.9%
Arrivals under 15 minutes late, of 1,072 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
1.56%
National rate is 1.81%
Whole route
71.2%
Every carrier on CLT to GSP, 1,532 flights
These figures cover 1,090 flights between July 2025 and June 2026. Beyond the headline rate, 14.1% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
PSA against every carrier on CLT to GSP
PSA flew 1,090 of the 1,532 flights on CLT to GSP, most of the route. Its 66.9% on time is 4 points worse than the route as a whole, which runs 71.2%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Envoy at 87.5% to PSA at 66.9%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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 |
|---|---|---|---|---|---|
| Envoy Airthin sample | 128 | 87.5% | 56 min | 0.00% | A+ |
| American Airlinesthin sample | 314 | 79.7% | 81 min | 2.87% | B |
| PSA Airlines (this page) | 1,090 | 66.9% | 77 min | 1.56% | C |
Departure window
When PSA runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am—
- 8am–11am11 flights—
- 11am–2pm72 flights72.2%
- 2pm–5pm140 flights68.6%
- 5pm–8pm453 flights71.6%
- 8pm–5am414 flights60.1%
Scale runs 50% to 80%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is where this operation falls apart: 60.1% on time, against 72.2% for the 11am–2pm 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 5pm–8pm window is the busiest, with 453 flights scheduled in it.
Across the year
PSA on CLT to GSP through the year
September is the best month on the calendar at 84.1% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. July was the busiest month here, with 118 flights.
Across the week, Wednesday is the strongest day at 73.9% on time and Sunday the weakest at 59.0%. 15 points is a smaller lever than departure hour, but it is free.
Delay causes
Why PSA runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 27,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 49%Late-arriving aircraft
- 25%Carrier
- 16%National Airspace System
- 10%Extreme weather
- 0%Security
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 27,000 reported delay minutes here, that single category outweighs weather by 5 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 27,160 reported delay minutes.
Cancellations sit at 1.56% against a national 1.81%, which is ordinary. Diversions add another 0.09%.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 14.1% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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 11am–2pm window matters as much as it does.
The return leg is a different operation and performs like one: it runs 84.3% on time across 1,090 flights, 17 points above 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 17 points of difference.
One caution: this is a thin sample. 1,090 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking PSA on CLT to GSP
Put together: treat all of this as provisional. 1,090 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 66.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,072 completed flights over 12 months sit behind that.
Related
Where to go next
- CLT to GSP, every carrier
- PSA on GSP to CLT, the return leg
- Envoy Air on CLT to GSP87.5%
- American Airlines on CLT to GSP79.7%
- PSA Airlines network-wide record
- Charlotte Douglas International (CLT) delay statistics
- Why the first flight of the morning is statistically safest
- How often a connection fails at the major US hubs
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.