Flight number record
OO 4244
SkyWest Airlines · Escanaba to Detroit
- Route
- ESC → DTW
- Departs
- 06:15
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4244, 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 4244 earns an A−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 3.0 hours. That rests on 365 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 4244's record is 8 points better than the US average of 77.3%. That gap is worth roughly 81 fewer late arrivals for every thousand flights.
Key figures
On time
85.4%
Arrivals under 15 minutes late, of 336 completed flights
Avg delay
181 min
Across delayed arrivals only, not all flights
Cancelled
7.95%
National rate is 1.89%
1 hour+ late
7.7%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 15 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When OO 4244 flies
OO 4244 flies ESC to DTW without a single fixed slot. Its most common scheduled departure was 06:15, used on 252 of 365 flights, with 06:13 (112 flights) next.
- Departs 06:15252 flights69.0%
- Departs 06:13112 flights30.7%
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 06:15 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4244 runs 4 points worse at 85.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 4244 next to ESC to DTW
Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4244 | 365 | 85.4% | 181 min | 7.95% | A− |
| All SkyWest Airlines on ESC–DTW | 365 | 85.4% | 181 min | 7.95% | A− |
| All carriers on ESC–DTW | 365 | 85.4% | 181 min | 7.95% | A− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4244 quarter by quarter
OO 4244 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jan–Mar 2026 at 72.4%, a swing of 21 points on roughly 73 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 flights93.3%
- Oct–Dec 202592 flights81.6%
- Jan–Mar 202690 flights72.4%
- Apr–Jun 202691 flights92.8%
- Jul–Sep 202662 flights93.3%
Scale runs 65% to 100%.
By weekday, OO 4244 did best on Thursday at 91.8% on time and worst on Monday at 75.0%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4244 runs when it is late
OO 4244 often beats the schedule: 180 of 336 completed flights, 54%, arrived 15 minutes or more early. When OO 4244 is late it tends to be very late: 26 of its 49 late arrivals were an hour or more behind, and 19 were two hours or more.
- 15+ min early180 flights53.6%
- Within 15 min107 flights31.8%
- 15–29 min late12 flights3.6%
- 30–59 min late11 flights3.3%
- 1–2 hours late7 flights2.1%
- 2+ hours late19 flights5.7%
Scale runs 0% to 100%.
Share of 336 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 32 departures that left 15 minutes late or more, only 0 made it up before arrival. In the other direction, 17 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DTW.
The worst days
Worst days for OO 4244
The latest arrival of the period was on 10 February 2026, 12 hours behind schedule; most of its delay minutes were filed as extreme weather. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 February 2026 | 12 hours | Extreme weather |
| 19 January 2026 | 10 hours 44 minutes | Extreme weather |
| 13 August 2026 | 10 hours 33 minutes | Extreme weather |
| 8 March 2026 | 8 hours 39 minutes | Carrier |
| 6 April 2026 | 8 hours 7 minutes | Carrier |
Delay causes
Why OO 4244 runs late
Carrier accounts for 52% of the 8,858 delay minutes carriers reported here, and the remaining four split what is left.
- 52%Carrier
- 45%Extreme weather
- 3%National Airspace System
Extreme weather accounts for 45% 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 7.4 times the usual weather exposure. The split is drawn from 8,858 delay minutes reported on OO 4244.
Cancellations run at 7.95%, against 1.89% nationally. That is about one flight in twelve 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
7.7% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about 3.0 hours, which a normal layover absorbs.
Every one of the 365 flights under OO 4244 in the data flew ESC to DTW. 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. 365 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 4244
For a booking, the cancellation rate is the figure to plan around on OO 4244: 7.95% of its 365 scheduled flights did not operate. A late arrival costs about 3.0 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- Detroit Metropolitan Wayne County (DTW) 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
- What a cancellation rate actually tells you (and what it hides)
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.