Flight number record

OO 4244

SkyWest Airlines · Escanaba to Detroit

Route: ESC → DTW
Departs: 06:15
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs about 3.2 hours. That rests on 365 flights, with a median arrival 16 minutes early.

Set against the rest of the country, OO 4244's record is 8 points better than the US average of 77.6%. That gap is worth roughly 76 fewer late arrivals for every thousand flights.

On time

85.2%

Arrivals under 15 minutes late, of 338 completed flights

Avg delay

191 min

Across delayed arrivals only, not all flights

Cancelled

7.40%

National rate is 1.81%

1 hour+ late

8.3%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% 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.

Schedule

When OO 4244 flies

OO 4244 is scheduled to leave Escanaba (ESC) at 06:15 local time and reach Detroit (DTW) at 07:34. That slot held for 302 of the 365 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.

Departs 06:15302 flights82.7%
Departs 06:1362 flights17.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 85.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 4244 next to ESC to DTW

Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 6 points.

OO 4244 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4244	365	85.2%	191 min	7.40%	A−
All SkyWest Airlines on ESC–DTW	365	85.2%	191 min	7.40%	A−
All carriers on ESC–DTW	365	85.2%	191 min	7.40%	A−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4244 quarter by quarter

OO 4244 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.8% on time and its weakest Jan–Mar 2026 at 72.4%, a swing of 20 points on roughly 91 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 202592 flights92.4%
Oct–Dec 202592 flights81.6%
Jan–Mar 202690 flights72.4%
Apr–Jun 202691 flights92.8%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4244 did best on Thursday at 95.9% on time and worst on Monday at 78.7%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4244 runs late

One category carries most of the weight here. Carrier accounts for 54% of the 9,564 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.

Carrier
54%
Extreme weather
43%
National Airspace System
3%
Security
0%

Extreme weather accounts for 43% 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 6.9 times the usual weather exposure. The split is drawn from 9,564 delay minutes reported on OO 4244.

Cancellations run at 7.40%, against 1.81% nationally. That is roughly 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 routes

What a delay on this flight costs

8.3% 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 3.2 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: 7.40% of its 365 scheduled flights did not operate. A late arrival costs about 3.2 hours, but a cancellation costs the day, so leave a later option open.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures