Flight number record

OO 4646

SkyWest Airlines · Akron to Chicago

Route: CAK → ORD
Departs: 07:00
Flights: 328
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4646, 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 4646 earns a B−. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.7 hours. That rests on 328 flights, with a median arrival 8 minutes early.

Set against the rest of the country, OO 4646's record is 7 points better than the US average of 77.6%. That gap is worth roughly 68 fewer late arrivals for every thousand flights.

On time

84.4%

Arrivals under 15 minutes late, of 315 completed flights

Avg delay

162 min

Across delayed arrivals only, not all flights

Cancelled

3.96%

National rate is 1.81%

1 hour+ late

9.5%

National rate is 8.1%

These figures cover 328 flights between July 2025 and June 2026. Beyond the headline rate, 9.5% 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 4646 flies

OO 4646 flies CAK to ORD without a single fixed slot. Its most common scheduled departure was 07:00, used on 150 of 328 flights, with 07:15 (51 flights) and 07:10 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:00150 flights45.7%
Departs 07:1551 flights15.5%
Departs 07:1037 flights11.3%

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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4646 runs 5 points worse at 84.4%. 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 4646 next to CAK to ORD

Every carrier on CAK to ORD combined arrived on time 71.6% of the time across 1,963 flights, so OO 4646 is 13 points ahead of it. SkyWest flew 1,474 flights on the same city pair under all its flight numbers, including this one, and those ran 72.0% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 5 points.

OO 4646 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4646thin sample	328	84.4%	162 min	3.96%	B−
All SkyWest Airlines on CAK–ORD	1,474	72.0%	117 min	4.41%	C−
All carriers on CAK–ORD	1,963	71.6%	114 min	4.99%	C−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4646 quarter by quarter

OO 4646 did not run the same all year. Its best quarter was Apr–Jun 2026 at 90.4% on time and its weakest Jan–Mar 2026 at 75.6%, a swing of 15 points on roughly 82 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 flights90.0%
Oct–Dec 202592 flights83.5%
Jan–Mar 202688 flights75.6%
Apr–Jun 202656 flights90.4%

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4646 did best on Thursday at 93.5% on time and worst on Friday at 78.7%. Each day rests on about 47 flights, so a gap of 15 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4646 runs late

One category carries most of the weight here. Carrier accounts for 64% of the 7,958 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
64%
Late-arriving aircraft
24%
National Airspace System
7%
Extreme weather
5%

The largest share of delay minutes, 64%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 5,095 of the 7,958 delay minutes reported here. The split is drawn from 7,958 delay minutes reported on OO 4646.

Cancellations run at 3.96%, against 1.81% nationally. That is about one flight in 25 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.5% 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.

The same number turns up on three other city pairs in the data, including ORD to ASE (34), CID to ORD (1) and ATW to DEN (1), but none flew often enough under OO 4646 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CAK to ORD only.

One caution: this is a thin sample. 328 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 4646

For a booking, the cancellation rate is the figure to plan around on OO 4646: 3.96% of its 328 scheduled flights did not operate. A late arrival costs about 2.7 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