Flight number record
OO 4823
SkyWest Airlines · Dallas-Fort Worth to Grand Island
- Route
- DFW → GRI
- Departs
- 21:30
- Flights
- 359
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4823, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 4823 lands a B−, level with the national rate of 77.3%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about 2.1 hours on average. That rests on 359 flights, with a median arrival 6 minutes early.
Key figures
On time
77.0%
Arrivals under 15 minutes late, of 344 completed flights
Avg delay
129 min
Across delayed arrivals only, not all flights
Cancelled
3.34%
National rate is 1.89%
1 hour+ late
11.3%
National rate is 8.3%
These figures cover 359 flights between September 2025 and August 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4823 flies
OO 4823 flies DFW to GRI without a single fixed slot. Its most common scheduled departure was 21:30, used on 189 of 359 flights, with 21:29 (69 flights) and 21:27 (37 flights) next.
- Departs 21:30189 flights52.6%
- Departs 21:2969 flights19.2%
- Departs 21:2737 flights10.3%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 21:30 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4823 runs 7 points better at 77.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4823 next to DFW to GRI
Every carrier on DFW to GRI combined arrived on time 75.6% of the time across 703 flights, so OO 4823 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4823thin sample | 359 | 77.0% | 129 min | 3.34% | B− |
| All SkyWest Airlines on DFW–GRI | 703 | 75.6% | 105 min | 2.42% | B |
| All carriers on DFW–GRI | 703 | 75.6% | 105 min | 2.42% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4823 quarter by quarter
OO 4823 did not run the same all year. Its best quarter was Jul–Sep 2026 at 85.2% on time and its weakest Jan–Mar 2026 at 71.6%, a swing of 14 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights—
- Oct–Dec 202587 flights76.2%
- Jan–Mar 202690 flights71.6%
- Apr–Jun 202691 flights78.0%
- Jul–Sep 202661 flights85.2%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4823 did best on Tuesday at 86.0% on time and worst on Saturday at 66.7%. Each day rests on about 51 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4823 runs when it is late
OO 4823 often beats the schedule: 99 of 344 completed flights, 29%, arrived 15 minutes or more early. The 79 late arrivals split 19 under half an hour, 21 between 30 and 60 minutes, and 39 an hour or more.
- 15+ min early99 flights28.8%
- Within 15 min166 flights48.3%
- 15–29 min late19 flights5.5%
- 30–59 min late21 flights6.1%
- 1–2 hours late18 flights5.2%
- 2+ hours late21 flights6.1%
Scale runs 0% to 100%.
Share of 344 completed flights by arrival against schedule.
10 of 80 late departures made up the time and arrived on time, 13% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for OO 4823
The latest arrival of the period was on 12 December 2025, 11 hours 37 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 December 2025 | 11 hours 37 minutes | Carrier |
| 22 May 2026 | 11 hours 30 minutes | Carrier |
| 4 June 2026 | 11 hours 23 minutes | Late-arriving aircraft |
| 27 January 2026 | 10 hours 37 minutes | Carrier |
| 16 May 2026 | 10 hours 29 minutes | Late-arriving aircraft |
Delay causes
Why OO 4823 runs late
Carrier accounts for 57% of the 10,000 delay minutes carriers reported here, and the remaining four split what is left.
- 57%Carrier
- 20%Extreme weather
- 20%Late-arriving aircraft
- 3%National Airspace System
Extreme weather accounts for 20% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.4 times the usual weather exposure. The split is drawn from 10,150 delay minutes reported on OO 4823.
Cancellations run at 3.34%, 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 routes
What a delay on this flight costs
11.3% 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 562 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.
Every one of the 359 flights under OO 4823 in the data flew DFW to GRI. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 359 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 OO 4823
For a booking, the cancellation rate is the figure to plan around on OO 4823: 3.34% of its 359 scheduled flights did not operate. A late arrival costs about 2.1 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Dallas/Fort Worth International (DFW) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How often a connection fails at the major US hubs
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.