Route reliability record
GSO→LGA
Greensboro to New York
- Flights
- 1,809
- Period
- July 2025 to June 2026
- Distance
- 461 mi
- Carriers
- 2
This route carries a cancellation problem, not just a delay problem: 6.5% 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 1,809 GSO to LGA flights, with a median arrival 9 minutes early.
Best time to fly GSO to LGA: a 5am–8am departure, ideally on a Saturday. Flights in that window arrived on time 87.1% of the time and Saturday flights 81.1%, against 77.2% 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
77.2%
Arrivals under 15 minutes late, of 1,691 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
6.47%
National rate is 1.81%
Best carrier
Republic
77.2% on time across 1,807 flights
These figures cover 1,809 flights between July 2025 and June 2026. Beyond the headline rate, 10.2% 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 GSO to LGA
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 |
|---|---|---|---|---|---|
| Delta Air Linesthin sample | 2 | 100.0% | — | 0.00% | A+ |
| Republic Airways | 1,807 | 77.2% | 80 min | 6.47% | B− |
Flight by flight
Flights on GSO to LGA
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.
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 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–8am526 flights87.1%
- 8am–11am263 flights86.2%
- 11am–2pm232 flights81.8%
- 2pm–5pm312 flights69.9%
- 5pm–8pm475 flights63.3%
- 8pm–5am1 flights—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is where this operation falls apart: 63.3% on time, against 87.1% for the 5am–8am 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 5am–8am window is the busiest, with 526 flights scheduled in it.
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.
September is the best month on the calendar at 87.6% on time. Shoulder season thins the schedule and takes the summer weather with it, and the operation gets its margin back. November was the busiest month here, with 210 flights.
Across the week, Saturday is the strongest day at 81.1% on time and Thursday the weakest at 71.2%. 10 points is a smaller lever than departure hour, but it is free.
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 31,000 reported delay minutes.
- 38%Late-arriving aircraft
- 29%National Airspace System
- 24%Carrier
- 9%Extreme weather
- 0%Security
38% 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 31,000 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 30,957 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 87.1% on time here.
Cancellations run at 6.47%, against 1.81% nationally. That is about one flight in fifteen 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.2% 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 461 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 5am–8am window matters as much as it does.
The return leg runs 75.8% on time across 1,807 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 1,809 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 LGA after this flight
What to do with this
Booking this route
Put together: the delay figures matter less here than the 6.47% 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. 1,691 completed flights over 12 months sit behind that.
Common questions
GSO to LGA questions
How often is GSO to LGA 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 22.8% of the 1,809 flights in this analysis, against 22.4% nationally. Delayed flights are late by a little over an hour on average.
How reliable is GSO to LGA compared with the rest of the country?
77.2% of flights arrive on time here against a national 77.6%, a difference of half a point against it. That is worth a B− on this site's grading scale.
What time of day has the fewest delays on GSO to LGA?
The 5am–8am departure window is the strongest at 87.1% on time. The 5pm–8pm window is the weakest at 63.3%, 24 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 March delays on GSO to LGA?
March is the weakest month at 66.0% on time, compared with 87.6% in September. 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
- LGA to GSO — the return legseparate record
- LaGuardia (LGA) delay statistics
- GSO to ATL, a related route89.6%
- ORD to LGA, a related route67.3%
- GSO to ORD, a related route77.9%
- Delta Air Lines on-time record100.0%
- Republic Airways on-time record77.2%
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Direction matters. GSO to LGA and LGA 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.