Flight number record

OO 5601

SkyWest Airlines · Chicago to Flint

Route: ORD → FNT
Departs: 13:48
Flights: 268
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5601, 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 5601 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 268 flights, with a median arrival 1 minute early.

The national on-time rate over the same period is 77.6%, so OO 5601 runs 9 points behind the country as a whole. Across a thousand flights that is about 90 extra late arrivals.

On time

68.6%

Arrivals under 15 minutes late, of 261 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

2.61%

National rate is 1.81%

1 hour+ late

14.9%

National rate is 8.1%

These figures cover 268 flights between July 2025 and June 2026. Beyond the headline rate, 14.9% 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 5601 flies

OO 5601 flies ORD to FNT without a single fixed slot. Its most common scheduled departure was 13:48, used on 102 of 268 flights, with 14:45 (79 flights) and 13:55 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:48102 flights38.1%
Departs 14:4579 flights29.5%
Departs 13:5549 flights18.3%

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 13:48 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 5601 runs 10 points worse at 68.6%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5601 next to ORD to FNT

Every carrier on ORD to FNT combined arrived on time 65.0% of the time across 1,975 flights, so OO 5601 is 4 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 10 points.

OO 5601 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5601thin sample	268	68.6%	82 min	2.61%	C
All SkyWest Airlines on ORD–FNT	1,975	65.0%	98 min	4.10%	C−
All carriers on ORD–FNT	1,975	65.0%	98 min	4.10%	C−
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5601 quarter by quarter

Quarter by quarter OO 5601 held fairly steady: 68.9% in Jul–Sep 2025, 71.9% in Oct–Dec 2025 and 64.6% in Jan–Mar 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights68.9%
Oct–Dec 202592 flights71.9%
Jan–Mar 202684 flights64.6%

Scale runs 55% to 75%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5601 did best on Tuesday at 78.9% on time and worst on Sunday at 47.1%. Each day rests on about 38 flights, so a gap of 32 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5601 runs late

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 6,733 reported delay minutes.

Carrier
40%
Late-arriving aircraft
39%
National Airspace System
18%
Extreme weather
3%

39% 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 6,733 reported delay minutes here, that single category outweighs weather by 15 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 6,733 delay minutes reported on OO 5601.

Cancellations run at 2.61%, against 1.81% nationally. That is about one flight in 40 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. 14.9% 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 six other city pairs in the data, including ORD to AVL (36), ORD to RAP (28) and ORD to BDL (18), but none flew often enough under OO 5601 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to ORD to FNT only.

One caution: this is a thin sample. 268 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 5601

For a booking, the cancellation rate is the figure to plan around on OO 5601: 2.61% of its 268 scheduled flights did not operate. A late arrival costs an hour and a half, 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