Flight number record
OO 5672
SkyWest Airlines · Memphis to Chicago
- Route
- MEM → ORD
- Departs
- 09:55
- Flights
- 355
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5672, 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 5672 lands a B, 4 points better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 355 flights, with a median arrival 10 minutes early.
Set against the rest of the country, OO 5672's record is 4 points better than the US average of 77.3%. That gap is worth roughly 43 fewer late arrivals for every thousand flights.
Key figures
On time
81.6%
Arrivals under 15 minutes late, of 348 completed flights
Avg delay
96 min
Across delayed arrivals only, not all flights
Cancelled
1.69%
National rate is 1.89%
1 hour+ late
8.0%
National rate is 8.3%
These figures cover 355 flights between September 2025 and August 2026. Beyond the headline rate, 8.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5672 flies
OO 5672 flies MEM to ORD without a single fixed slot. Its most common scheduled departure was 09:55, used on 56 of 355 flights, with 09:46 (43 flights) and 10:30 (37 flights) next.
- Departs 09:5556 flights15.8%
- Departs 09:4643 flights12.1%
- Departs 10:3037 flights10.4%
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 09:55 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5672 runs 2 points worse at 81.6%. 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 5672 next to MEM to ORD
Every carrier on MEM to ORD combined arrived on time 74.8% of the time across 2,529 flights, so OO 5672 is 7 points ahead of it. SkyWest flew 866 flights on the same city pair under all its flight numbers, including this one, and those ran 70.6% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5672thin sample | 355 | 81.6% | 96 min | 1.69% | B |
| All SkyWest Airlines on MEM–ORD | 866 | 70.6% | 90 min | 3.00% | C |
| All carriers on MEM–ORD | 2,529 | 74.8% | 82 min | 3.80% | C− |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5672 quarter by quarter
Quarter by quarter OO 5672 held fairly steady: 80.0% in Jul–Sep 2025, 81.1% in Oct–Dec 2025, 76.7% in Jan–Mar 2026, 85.2% in Apr–Jun 2026 and 85.2% in Jul–Sep 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights80.0%
- Oct–Dec 202591 flights81.1%
- Jan–Mar 202688 flights76.7%
- Apr–Jun 202690 flights85.2%
- Jul–Sep 202656 flights85.2%
Scale runs 70% to 90%.
By weekday, OO 5672 did best on Thursday at 89.8% on time and worst on Tuesday at 72.0%. Each day rests on about 51 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5672 runs when it is late
OO 5672 often beats the schedule: 137 of 348 completed flights, 39%, arrived 15 minutes or more early. The 64 late arrivals split 21 under half an hour, 15 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early137 flights39.4%
- Within 15 min147 flights42.2%
- 15–29 min late21 flights6.0%
- 30–59 min late15 flights4.3%
- 1–2 hours late15 flights4.3%
- 2+ hours late13 flights3.7%
Scale runs 0% to 100%.
Share of 348 completed flights by arrival against schedule.
7 of 56 late departures made up the time and arrived on time, 13% of them. 15 flights left on time and still arrived late.
The worst days
Worst days for OO 5672
The latest arrival of the period was on 18 May 2026, 19 hours 39 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across May, November, December, March and August, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 May 2026 | 19 hours 39 minutes | Carrier |
| 24 November 2025 | 6 hours 36 minutes | Carrier |
| 18 December 2025 | 4 hours 57 minutes | Late-arriving aircraft |
| 15 March 2026 | 4 hours 12 minutes | National Airspace System |
| 12 August 2026 | 3 hours 58 minutes | Extreme weather |
Delay causes
Why OO 5672 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 6,123 reported delay minutes.
- 36%Carrier
- 32%Late-arriving aircraft
- 24%National Airspace System
- 8%Extreme weather
The largest share of delay minutes, 36%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,223 of the 6,123 delay minutes reported here. The split is drawn from 6,123 delay minutes reported on OO 5672.
Cancellations sit at 1.69% against a national 1.89%, which is ordinary. Diversions add another 0.28%.
Connections and routes
What a delay on this flight costs
8.0% 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 an hour and a half, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including ORD to DLH (51) and IAH to BHM (1), but none flew often enough under OO 5672 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MEM to ORD only.
One caution: this is a thin sample. 355 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 5672
For a booking, read OO 5672 as 81.6% on time with 1.69% cancelled over 355 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MEM to ORD, every carrier and departure
- ORD to MEM, the return direction
- SkyWest Airlines 5780 on the same route68.1%
- Memphis International (MEM) delay statistics
- 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
- Worst months to fly in the US, ranked by the data
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.