Flight number record
OO 5016
SkyWest Airlines · Hancock to Chicago
- Route
- CMX → ORD
- Departs
- 08:40
- Flights
- 309
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5016, 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 5016 sits in the middle of the pack with a C−. Close to three flights in four arrive on time by the DOT's definition, 4 points worse than the national rate of 77.3%. The late ones land about 2.8 hours behind schedule. That rests on 309 flights, with a median arrival 3 minutes early.
Key figures
On time
73.5%
Arrivals under 15 minutes late, of 291 completed flights
Avg delay
171 min
Across delayed arrivals only, not all flights
Cancelled
5.83%
National rate is 1.89%
1 hour+ late
14.8%
National rate is 8.3%
These figures cover 309 flights between September 2025 and August 2026. Beyond the headline rate, 14.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5016 flies
OO 5016 flies CMX to ORD without a single fixed slot. Its most common scheduled departure was 08:40, used on 93 of 309 flights, with 08:35 (61 flights) and 08:30 (58 flights) next.
- Departs 08:4093 flights30.1%
- Departs 08:3561 flights19.7%
- Departs 08:3058 flights18.8%
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 08:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5016 runs 10 points worse at 73.5%. 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 5016 next to CMX to ORD
Every carrier on CMX to ORD combined arrived on time 67.1% of the time across 788 flights, so OO 5016 is 6 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5016thin sample | 309 | 73.5% | 171 min | 5.83% | C− |
| All SkyWest Airlines on CMX–ORD | 788 | 67.1% | 134 min | 7.23% | C− |
| All carriers on CMX–ORD | 788 | 67.1% | 134 min | 7.23% | C− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5016 quarter by quarter
OO 5016 did not run the same all year. Its best quarter was Jul–Sep 2026 at 94.9% on time and its weakest Jan–Mar 2026 at 58.4%, a swing of 37 points on roughly 62 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 flights66.7%
- Oct–Dec 202592 flights69.3%
- Jan–Mar 202687 flights58.4%
- Apr–Jun 202638 flights86.5%
- Jul–Sep 202662 flights94.9%
Scale runs 50% to 100%.
By weekday, OO 5016 did best on Tuesday at 85.0% on time and worst on Saturday at 66.7%. Each day rests on about 44 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5016 runs when it is late
When OO 5016 is late it tends to be very late: 43 of its 77 late arrivals were an hour or more behind, and 33 were two hours or more.
- 15+ min early70 flights24.1%
- Within 15 min144 flights49.5%
- 15–29 min late16 flights5.5%
- 30–59 min late18 flights6.2%
- 1–2 hours late10 flights3.4%
- 2+ hours late33 flights11.3%
Scale runs 0% to 100%.
Share of 291 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 51 departures that left 15 minutes late or more, only 1 made it up before arrival. In the other direction, 27 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 ORD.
The worst days
Worst days for OO 5016
The latest arrival of the period was on 26 December 2025, 17 hours 34 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 |
|---|---|---|
| 26 December 2025 | 17 hours 34 minutes | Carrier |
| 22 February 2026 | 10 hours 39 minutes | Carrier |
| 5 March 2026 | 10 hours 34 minutes | Extreme weather |
| 27 November 2025 | 9 hours 40 minutes | Carrier |
| 17 May 2026 | 8 hours 9 minutes | Late-arriving aircraft |
Delay causes
Why OO 5016 runs late
Carrier accounts for 49% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 22%Extreme weather
- 18%Late-arriving aircraft
- 11%National Airspace System
- 0%Security
Extreme weather accounts for 22% 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 3.6 times the usual weather exposure. The split is drawn from 13,125 delay minutes reported on OO 5016.
Cancellations run at 5.83%, against 1.89% 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
14.8% 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 same number turns up on seven other city pairs in the data, including ORD to CIU (45), ORD to CMX (32) and ORD to LAF (32), but none flew often enough under OO 5016 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CMX to ORD only.
One caution: this is a thin sample. 309 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 5016
For a booking, the cancellation rate is the figure to plan around on OO 5016: 5.83% of its 309 scheduled flights did not operate. A late arrival costs about 2.8 hours, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- CMX to ORD, every carrier and departure
- ORD to CMX, the return direction
- Chicago O'Hare International (ORD) 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.