Route reliability record
ORD→GSO
Chicago to Greensboro
- Flights
- 1,558
- Period
- July 2025 to June 2026
- Distance
- 589 mi
- Carriers
- 3
This route lands a B, level with the national rate of 77.6%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 1,558 ORD to GSO flights, of which Envoy Air flew 877 at 80.3% on time.
Best time to fly ORD to GSO: a 8am–11am departure, ideally on a Tuesday. Flights in that window arrived on time 86.2% of the time and Tuesday flights 81.0%, against 77.8% for the route overall.
The US average over the same twelve months is 77.6%, so there is little to separate this route from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
77.8%
Arrivals under 15 minutes late, of 1,512 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
2.89%
National rate is 1.81%
Best carrier
Envoy
80.3% on time across 877 flights
These figures cover 1,558 flights between July 2025 and June 2026. Beyond the headline rate, 8.2% 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
Which airline is most reliable on ORD to GSO
The choice of carrier is not cosmetic here. Envoy Air arrives on time 80.3% of the time; SkyWest Airlines manages 73.0%. Sample sizes sit next to every figure, because a two-point gap across 600 flights means less than a ten-point one.
| 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 | 600 | 73.0% | 61 min | 3.17% | C− |
SkyWest Airlines cancels 3.2% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.
Flight by flight
Flights on ORD to GSO
The flight numbers below flew this route at least 250 times in the period, busiest first. Each has its own record, with its schedule and delay causes.
Best ways to make this trip
The most reliable ways to fly Chicago to Greensboro
Every airline on this route, ranked by how often a scheduled flight actually operated and arrived on time, with its best departure time and most punctual flight number. No nearby airport pair beat these.
| Option | Airline | Success | On time | Cancelled | Best departure | Most punctual flight |
|---|---|---|---|---|---|---|
| 1. ORD → GSOChicago to Greensboro | Envoy Air | 78.3% | 80.3% | 2.51% | 8am–11am, Tue | MQ 3648 18:59 |
| 2. ORD → GSOChicago to Greensboro | SkyWest Airlines | 70.7% | 73.0% | 3.17% | 11am–2pm, Fri | OO 5395 13:43 |
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 15 points, against 7 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am5 flights—
- 8am–11am363 flights86.2%
- 11am–2pm278 flights82.8%
- 2pm–5pm294 flights76.5%
- 5pm–8pm552 flights71.0%
- 8pm–5am66 flights71.2%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 86.2% of the time, against 71.0% for the evening window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 552 flights scheduled in it.
Across the year
When delays peak on this route
This route's year swings by 31 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.
December is the weak month at 60.9% on time, against 92.1% 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. April was the busiest month here, with 178 flights.
Across the week, Tuesday is the strongest day at 81.0% on time and Wednesday the weakest at 73.9%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why this route gets delayed
One category carries most of the weight here. Late-arriving aircraft accounts for 44% of the 22,000 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.
- 44%Late-arriving aircraft
- 23%Carrier
- 22%National Airspace System
- 10%Extreme weather
44% 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 22,000 reported delay minutes here, that single category outweighs weather by 4 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 21,771 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 86.2% on time here.
Cancellations run at 2.89%, against 1.81% nationally. That is roughly 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 actually costs
8.2% 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 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 77.9% on time across 1,556 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.
The sample behind these figures is 1,558 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 GSO after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 2.89% 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. 1,512 completed flights over 12 months sit behind that.
Common questions
ORD to GSO questions
How often is ORD to GSO delayed?
Roughly one flight in five arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.2% of the 1,558 flights in this analysis, against 22.4% nationally. Delayed flights are late by about an hour on average.
Which airline is most reliable on ORD to GSO?
Envoy Air leads at 80.3% on time across 877 flights. SkyWest Airlines is at the other end on 73.0%, a gap of 7 points. Sample size matters as much as the percentage: a rate built from a few hundred flights moves around far more than one built from ten thousand.
What time of day has the fewest delays on ORD to GSO?
The 8am–11am departure window is the strongest at 86.2% on time. The 5pm–8pm window is the weakest at 71.0%, 15 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 December delays on ORD to GSO?
December is the weakest month at 60.9% on time, compared with 92.1% in September. Across the year that is 31 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
- GSO to ORD — the return legseparate record
- Chicago O'Hare International (ORD) delay statistics
- Envoy Air on ORD to GSO80.3%
- SkyWest Airlines on ORD to GSO73.0%
- ORD to LGA, a related route67.3%
- ATL to GSO, a related route83.8%
- ORD to BOS, a related route67.6%
- Republic Airways on-time record87.0%
- Envoy Air on-time record80.3%
- SkyWest Airlines on-time record73.0%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. ORD to GSO and GSO to ORD are scored separately because they are separate operations, with different departure banks and different aircraft. Compare the return leg.
Embed ORD to GSO’s on-time badge on your site
Paste this into a web page. The badge shows the current on-time rate, cancellation rate and grade, and updates every month. Preview it, or build a badge for another route or airport.
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.