Flight number record
OO 5743
SkyWest Airlines · Denver to Casper
- Route
- DEN → CPR
- Departs
- 09:35
- Flights
- 348
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5743, 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 5743 lands a B, 5 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 348 flights, with a median arrival 8 minutes early.
Set against the rest of the country, OO 5743's record is 5 points better than the US average of 77.3%. That gap is worth roughly 51 fewer late arrivals for every thousand flights.
Key figures
On time
82.4%
Arrivals under 15 minutes late, of 341 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
1.44%
National rate is 1.89%
1 hour+ late
7.6%
National rate is 8.3%
These figures cover 348 flights between September 2025 and August 2026. The median arrival is 8 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When OO 5743 flies
OO 5743 is scheduled to leave Denver (DEN) at 09:35 local time and reach Casper (CPR) at 10:46. That slot held for 309 of the 348 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 09:35309 flights88.8%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5743 runs level with that at 82.4%. 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 5743 next to DEN to CPR
Every carrier on DEN to CPR combined arrived on time 77.7% of the time across 2,629 flights, so OO 5743 is 5 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 4 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5743thin sample | 348 | 82.4% | 75 min | 1.44% | B |
| All SkyWest Airlines on DEN–CPR | 2,629 | 77.7% | 82 min | 0.95% | B+ |
| All carriers on DEN–CPR | 2,629 | 77.7% | 82 min | 0.95% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5743 quarter by quarter
OO 5743 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Jul–Sep 2026 at 75.5%, a swing of 18 points on roughly 70 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 flights93.3%
- Oct–Dec 202591 flights82.0%
- Jan–Mar 202689 flights88.2%
- Apr–Jun 202685 flights77.4%
- Jul–Sep 202653 flights75.5%
Scale runs 65% to 100%.
By weekday, OO 5743 did best on Saturday at 91.7% on time and worst on Friday at 75.0%. Each day rests on about 50 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5743 runs when it is late
OO 5743 often beats the schedule: 109 of 341 completed flights, 32%, arrived 15 minutes or more early. The 60 late arrivals split 16 under half an hour, 18 between 30 and 60 minutes, and 26 an hour or more.
- 15+ min early109 flights32.0%
- Within 15 min172 flights50.4%
- 15–29 min late16 flights4.7%
- 30–59 min late18 flights5.3%
- 1–2 hours late16 flights4.7%
- 2+ hours late10 flights2.9%
Scale runs 0% to 100%.
Share of 341 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 52 departures that left 15 minutes late or more, only 4 made it up before arrival. 12 flights left on time and still arrived late.
The worst days
Worst days for OO 5743
The latest arrival of the period was on 10 July 2026, 5 hours 17 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 10 July 2026 | 5 hours 17 minutes | Late-arriving aircraft |
| 19 December 2025 | 4 hours 51 minutes | Late-arriving aircraft |
| 16 October 2025 | 4 hours 13 minutes | Carrier |
| 19 February 2026 | 3 hours 55 minutes | Late-arriving aircraft |
| 6 February 2026 | 3 hours 34 minutes | Late-arriving aircraft |
Delay causes
Why OO 5743 runs late
Late-arriving aircraft accounts for 46% of the 4,476 delay minutes carriers reported here, and the remaining four split what is left.
- 46%Late-arriving aircraft
- 44%Carrier
- 10%National Airspace System
46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,476 reported delay minutes here, that single category outweighs weather by 46 to one. The split is drawn from 4,476 delay minutes reported on OO 5743.
Cancellations sit at 1.44% against a national 1.89%, which is ordinary. Diversions add another 0.57%.
Connections and routes
What a delay on this flight costs
7.6% 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 a little over an hour, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including ORD to ROC (3) and RIW to CPR (1), but none flew often enough under OO 5743 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to CPR only.
One caution: this is a thin sample. 348 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 5743
For a booking, read OO 5743 as 82.4% on time with 1.44% cancelled over 348 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to CPR, every carrier and departure
- CPR to DEN, the return direction
- SkyWest Airlines 4687 on the same route78.8%
- SkyWest Airlines 5294 on the same route73.7%
- SkyWest Airlines 5802 on the same route71.5%
- SkyWest Airlines 4797 on the same route85.2%
- SkyWest Airlines 5226 on the same route79.6%
- Denver International (DEN) 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
- Why the first flight of the morning is statistically safest
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.