Carrier route record
MQORD→GSP
Envoy Air · Chicago to Greer
- Flights
- 778
- Period
- July 2025 to June 2026
- Share of route
- 43%
- Carriers
- 6
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with Envoy Air.
Envoy on ORD to GSP carries a cancellation problem, not just a delay problem: 3.3% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, close to three flights in four arrive on time, worth a B− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 778 flights, with a median arrival 8 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate Envoy on ORD to GSP from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
76.7%
Arrivals under 15 minutes late, of 751 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
3.34%
National rate is 1.81%
Whole route
72.9%
Every carrier on ORD to GSP, 1,799 flights
These figures cover 778 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% 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
Envoy against every carrier on ORD to GSP
Envoy flew 778 of the 1,799 flights on ORD to GSP, about 43% of it. Its 76.7% on time is 4 points better than the route as a whole, which runs 72.9%. Ranked by on-time rate it is number three of six carriers on the route, where the range runs from United at 100.0% to PSA at 48.7%. Four 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 |
|---|---|---|---|---|---|
| United Airlinesthin sample | 1 | 100.0% | — | 0.00% | A+ |
| Republic Airwaysthin sample | 312 | 80.2% | 86 min | 4.49% | B− |
| Envoy Air (this page) | 778 | 76.7% | 61 min | 3.34% | B− |
| SkyWest Airlines | 528 | 69.7% | 69 min | 3.60% | C− |
| American Airlinesthin sample | 54 | 59.2% | 53 min | 9.26% | D− |
| PSA Airlinesthin sample | 126 | 48.7% | 122 min | 6.35% | F− |
Departure window
When Envoy runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 20 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–11am297 flights87.3%
- 11am–2pm35 flights67.6%
- 2pm–5pm183 flights66.9%
- 5pm–8pm148 flights75.4%
- 8pm–5am115 flights68.9%
Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 87.3% of the time, against 66.9% for the afternoon window. That is 20 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 297 flights scheduled in it.
Across the year
Envoy on ORD to GSP through the year
January is the weak month at 59.6% on time, against 92.5% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. May was the busiest month here, with 93 flights.
Across the week, Friday is the strongest day at 81.6% on time and Monday the weakest at 73.5%. 8 points is a smaller lever than departure hour, but it is free.
Delay causes
Why Envoy runs late on this route
One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 11,000 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
- 27%National Airspace System
- 15%Carrier
- 9%Extreme weather
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 11,000 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 10,677 reported delay minutes.
The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 87.3% on time here.
Cancellations run at 3.34%, against 1.81% nationally. That is about one flight in 30 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 costs
8.3% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.
The 577 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 72.5% on time across 775 flights, 4 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 4 points of difference.
One caution: this is a thin sample. 778 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 Envoy on ORD to GSP
Put together: the delay figures matter less here than the 3.34% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 8am–11am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 751 completed flights over 12 months sit behind that.
Related
Where to go next
- ORD to GSP, every carrier
- Envoy on GSP to ORD, the return leg
- Republic Airways on ORD to GSP80.2%
- SkyWest Airlines on ORD to GSP69.7%
- PSA Airlines on ORD to GSP48.7%
- Envoy Air network-wide record
- Chicago O'Hare International (ORD) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
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.