Flight number record
OO 5701
SkyWest Airlines · Sioux Falls to Denver
- Route
- FSD → DEN
- Departs
- 06:00
- Flights
- 336
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5701, 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 5701 earns an A. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.1 hours. That rests on 336 flights, with a median arrival 16 minutes early.
Set against the rest of the country, OO 5701's record is 14 points better than the US average of 77.3%. That gap is worth roughly 142 fewer late arrivals for every thousand flights.
Key figures
On time
91.5%
Arrivals under 15 minutes late, of 329 completed flights
Avg delay
129 min
Across delayed arrivals only, not all flights
Cancelled
2.08%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 336 flights between September 2025 and August 2026. The median arrival is 16 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 5701 flies
OO 5701 is scheduled to leave Sioux Falls (FSD) at 06:00 local time and reach Denver (DEN) at 07:05. That slot held for 291 of the 336 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 06:00291 flights86.6%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5701 runs 2 points better at 91.5%. 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 5701 next to FSD to DEN
Every carrier on FSD to DEN combined arrived on time 80.2% of the time across 1,818 flights, so OO 5701 is 11 points ahead of it. SkyWest flew 1,313 flights on the same city pair under all its flight numbers, including this one, and those ran 82.7% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5701thin sample | 336 | 91.5% | 129 min | 2.08% | A |
| All SkyWest Airlines on FSD–DEN | 1,313 | 82.7% | 96 min | 1.37% | B |
| All carriers on FSD–DEN | 1,818 | 80.2% | 88 min | 1.38% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5701 quarter by quarter
Quarter by quarter OO 5701 held fairly steady: 96.7% in Jul–Sep 2025, 88.5% in Oct–Dec 2025, 93.0% in Jan–Mar 2026, 89.2% in Apr–Jun 2026 and 93.4% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights96.7%
- Oct–Dec 202591 flights88.5%
- Jan–Mar 202689 flights93.0%
- Apr–Jun 202665 flights89.2%
- Jul–Sep 202661 flights93.4%
Scale runs 80% to 100%.
By weekday, OO 5701 ranged from 89.1% on Sunday to 95.8% on Tuesday. With about 48 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5701 runs when it is late
OO 5701 often beats the schedule: 170 of 329 completed flights, 52%, arrived 15 minutes or more early. The 28 late arrivals split 9 under half an hour, 8 between 30 and 60 minutes, and 11 an hour or more.
- 15+ min early170 flights51.7%
- Within 15 min131 flights39.8%
- 15–29 min late9 flights2.7%
- 30–59 min late8 flights2.4%
- 1–2 hours late3 flights0.9%
- 2+ hours late8 flights2.4%
Scale runs 0% to 100%.
Share of 329 completed flights by arrival against schedule.
5 of 24 late departures made up the time and arrived on time, 21% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for OO 5701
The latest arrival of the period was on 18 December 2025, 9 hours 38 minutes behind schedule; most of its delay minutes were filed as extreme weather. The five worst days are spread across December, January, April and July, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 December 2025 | 9 hours 38 minutes | Extreme weather |
| 1 December 2025 | 7 hours 22 minutes | Carrier |
| 26 January 2026 | 6 hours 54 minutes | Carrier |
| 3 April 2026 | 6 hours 43 minutes | Extreme weather |
| 1 July 2026 | 5 hours 50 minutes | Late-arriving aircraft |
Delay causes
Why OO 5701 runs late
Carrier accounts for 59% of the 3,606 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 27%Extreme weather
- 10%Late-arriving aircraft
- 5%National Airspace System
Extreme weather accounts for 27% 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 4.5 times the usual weather exposure. The split is drawn from 3,606 delay minutes reported on OO 5701.
Cancellations sit at 2.08% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.3% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The same number turns up on one other city pair in the data, including SFO to LAX (1), but none flew often enough under OO 5701 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to FSD to DEN only.
One caution: this is a thin sample. 336 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 5701
For a booking, read OO 5701 as 91.5% on time with 2.08% cancelled over 336 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- FSD to DEN, every carrier and departure
- DEN to FSD, the return direction
- SkyWest Airlines 5848 on the same route69.2%
- SkyWest Airlines 5492 on the same route91.6%
- 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
- How to read this site: grades, sample sizes, and honest caveats
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.