Route reliability record
GSO→ORD
Greensboro to Chicago
- Flights
- 1,560
- Period
- September 2025 to August 2026
- Distance
- 589 mi
- Carriers
- 3
This route carries a cancellation problem, not just a delay problem: 3.5% of scheduled flights never operate, against 1.9% 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 1,560 GSO to ORD flights, of which Envoy Air flew 946 at 79.0% on time.
Best time to fly GSO to ORD: a 5am–8am departure, ideally on a Thursday. Flights in that window arrived on time 89.0% of the time and Thursday flights 80.9%, against 77.3% for the route overall.
The US average over the same twelve months is 77.3%, 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
77.3%
Arrivals under 15 minutes late, of 1,501 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
3.46%
National rate is 1.89%
Best carrier
Envoy
79.0% on time across 946 flights
These figures cover 1,560 flights between September 2025 and August 2026. Beyond the headline rate, 9.1% 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 GSO to ORD
The choice of carrier is not cosmetic here. Envoy Air arrives on time 79.0% of the time; SkyWest Airlines manages 72.9%. Sample sizes sit next to every figure, because a two-point gap across 529 flights means less than a ten-point one.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Republic Airwaysthin sample | 85 | 87.3% | 81 min | 7.06% | A− |
| Envoy Air | 946 | 79.0% | 89 min | 2.75% | B |
| SkyWest Airlines | 529 | 72.9% | 70 min | 4.16% | C− |
SkyWest Airlines cancels 4.2% 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 GSO to ORD
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.
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Best ways to make this trip
The most reliable ways to fly Greensboro to Chicago
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. GSO → ORDGreensboro to Chicago | Envoy Air | 76.8% | 79.0% | 2.75% | 5am–8am, Thu | MQ 3413 07:30 |
| 2. GSO → ORDGreensboro to Chicago | SkyWest Airlines | 69.9% | 72.9% | 4.16% | 5am–8am, Thu | OO 4776 17:28 |
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 26 points, against 6 points between the best and worst carrier.
- 5am–8am511 flights89.0%
- 8am–11am108 flights76.7%
- 11am–2pm340 flights80.1%
- 2pm–5pm35 flights62.9%
- 5pm–8pm381 flights63.5%
- 8pm–5am185 flights69.8%
Scale runs 55% to 95%.
Book the early departure. Flights leaving between 5am–8am arrive on time 89.0% of the time, against 62.9% for the afternoon window. That is 26 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 511 flights scheduled in it.
Explore
Filter GSO to ORD 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 GSO to ORD, the best departure window is 5am–8am at 89.0% on time and the worst is 2pm–5pm at 62.9%, a wide gap of 26.1 points. All US flights leaving 5am–8am ran 89.3%.
- 5–8am89.0%
- 8–11am76.7%
- 11am–2pm80.1%
- 2–5pm62.9%
- 5–8pm63.5%
- 8pm–5am69.8%
best all US flightsScale 55% to 95%.
Across the year
When delays peak on this route
This route's year swings by 22 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.
January is the weak month at 66.7% on time, against 88.4% in May. 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, Thursday is the strongest day at 80.9% on time and Sunday the weakest at 74.8%, a spread of 6 points.
Delay causes
Why this route gets delayed
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 28,000 reported delay minutes.
- 39%Late-arriving aircraft
- 27%National Airspace System
- 24%Carrier
- 10%Extreme weather
39% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 28,000 reported delay minutes here, that single category outweighs weather by 4 to one. The split is drawn from 27,505 reported delay minutes.
The practical consequence: the 5am–8am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 89.0% on time here.
Cancellations run at 3.46%, against 1.89% 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 actually costs
9.1% 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.
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.
The return leg runs 76.1% on time across 1,560 flights, within about 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 1,560 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 ORD after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 3.46% cancellation rate. A late arrival costs you a little over an hour; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 1,501 completed flights over 12 months sit behind that.
Common questions
GSO to ORD questions
How often is GSO to ORD delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 22.7% of the 1,560 flights in this analysis, against 22.7% nationally. Delayed flights are late by a little over an hour on average.
Which airline is most reliable on GSO to ORD?
Envoy Air leads at 79.0% on time across 946 flights. SkyWest Airlines is at the other end on 72.9%, a gap of 6 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 GSO to ORD?
The 5am–8am departure window is the strongest at 89.0% on time. The 2pm–5pm window is the weakest at 62.9%, 26 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 January delays on GSO to ORD?
January is the weakest month at 66.7% on time, compared with 88.4% in May. Across the year that is 22 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
- ORD to GSO — the return legseparate record
- Chicago O'Hare International (ORD) delay statistics
- Envoy Air on GSO to ORD79.0%
- SkyWest Airlines on GSO to ORD72.9%
- GSO to ATL, a related route89.2%
- LGA to ORD, a related route66.7%
- GSO to LGA, a related route76.0%
- Republic Airways on-time record87.3%
- Envoy Air on-time record79.0%
- SkyWest Airlines on-time record72.9%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. GSO to ORD and ORD to GSO 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.