Carrier route record
OOORD→GSO
SkyWest Airlines · Chicago to Greensboro
- Flights
- 600
- Period
- July 2025 to June 2026
- Share of route
- 39%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on ORD to GSO sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 5 points worse than the national rate of 77.6%. The late ones land about an hour behind schedule. That rests on 600 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so SkyWest on ORD to GSO runs 5 points behind the country as a whole. Across a thousand flights that is about 46 extra late arrivals.
Key figures
On time
73.0%
Arrivals under 15 minutes late, of 581 completed flights
Avg delay
61 min
Across delayed arrivals only, not all flights
Cancelled
3.17%
National rate is 1.81%
Whole route
77.8%
Every carrier on ORD to GSO, 1,558 flights
These figures cover 600 flights between July 2025 and June 2026. Beyond the headline rate, 9.1% 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
SkyWest against every carrier on ORD to GSO
SkyWest flew 600 of the 1,558 flights on ORD to GSO, about 39% of it. Its 73.0% on time is 5 points worse than the route as a whole, which runs 77.8%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Republic at 87.0% to SkyWest at 73.0%. One 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 |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 81 | 87.0% | 97 min | 4.94% | A− |
| Envoy Air | 877 | 80.3% | 67 min | 2.51% | B |
| SkyWest Airlines (this page) | 600 | 73.0% | 61 min | 3.17% | C− |
Flight by flight
SkyWest flight numbers on ORD to GSO
Departure window
When SkyWest runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 24 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–8am5 flights—
- 8am–11am31 flights80.6%
- 11am–2pm276 flights82.7%
- 2pm–5pm47 flights72.1%
- 5pm–8pm220 flights59.0%
- 8pm–5am21 flights—
Scale runs 50% to 90%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 59.0% on time, against 82.7% 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 11am–2pm window is the busiest, with 276 flights scheduled in it.
Across the year
SkyWest on ORD to GSO through the year
December is the weak month at 58.1% on time, against 90.5% in August. 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. April was the busiest month here, with 87 flights.
Across the week, Friday is the strongest day at 77.5% on time and Wednesday the weakest at 65.5%. 12 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 9,628 reported delay minutes.
- 38%Carrier
- 30%Late-arriving aircraft
- 27%National Airspace System
- 5%Extreme weather
The largest share of delay minutes, 38%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 3,661 of the 9,628 delay minutes reported here. The split is drawn from 9,628 reported delay minutes.
Cancellations run at 3.17%, 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.1% 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.
The 589 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 runs 72.5% on time across 600 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 600 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 SkyWest on ORD to GSO
Put together: the delay figures matter less here than the 3.17% cancellation rate. A late arrival costs you about an hour; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 581 completed flights over 12 months sit behind that.
Related
Where to go next
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.