Flight number record
OO 5700
SkyWest Airlines · Denver to Sioux Falls
- Route
- DEN → FSD
- Departs
- 21:00
- Flights
- 360
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5700, 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 5700 lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 360 flights, with a median arrival 11 minutes early.
Key figures
On time
80.5%
Arrivals under 15 minutes late, of 354 completed flights
Avg delay
107 min
Across delayed arrivals only, not all flights
Cancelled
1.67%
National rate is 1.89%
1 hour+ late
8.5%
National rate is 8.3%
These figures cover 360 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5700 flies
OO 5700 flies DEN to FSD without a single fixed slot. Its most common scheduled departure was 21:00, used on 99 of 360 flights, with 21:10 (81 flights) and 20:50 (36 flights) next.
- Departs 21:0099 flights27.5%
- Departs 21:1081 flights22.5%
- Departs 20:5036 flights10.0%
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 21:00 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5700 runs 10 points better at 80.5%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 5700 next to DEN to FSD
Every carrier on DEN to FSD combined arrived on time 82.8% of the time across 1,817 flights, so OO 5700 is 2 points behind it. SkyWest flew 1,313 flights on the same city pair under all its flight numbers, including this one, and those ran 85.5% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5700thin sample | 360 | 80.5% | 107 min | 1.67% | B |
| All SkyWest Airlines on DEN–FSD | 1,313 | 85.5% | 78 min | 0.99% | A+ |
| All carriers on DEN–FSD | 1,817 | 82.8% | 80 min | 0.94% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5700 quarter by quarter
OO 5700 did not run the same all year. Its best quarter was Oct–Dec 2025 at 90.8% on time and its weakest Jul–Sep 2026 at 65.0%, a swing of 26 points on roughly 72 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 flights83.3%
- Oct–Dec 202591 flights90.8%
- Jan–Mar 202688 flights86.2%
- Apr–Jun 202690 flights74.4%
- Jul–Sep 202661 flights65.0%
Scale runs 55% to 95%.
By weekday, OO 5700 did best on Monday at 88.5% on time and worst on Wednesday at 74.5%. Each day rests on about 51 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5700 runs when it is late
OO 5700 often beats the schedule: 144 of 354 completed flights, 41%, arrived 15 minutes or more early. The 69 late arrivals split 19 under half an hour, 20 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early144 flights40.7%
- Within 15 min141 flights39.8%
- 15–29 min late19 flights5.4%
- 30–59 min late20 flights5.6%
- 1–2 hours late15 flights4.2%
- 2+ hours late15 flights4.2%
Scale runs 0% to 100%.
Share of 354 completed flights by arrival against schedule.
11 of 64 late departures made up the time and arrived on time, 17% of them. 16 flights left on time and still arrived late.
The worst days
Worst days for OO 5700
The latest arrival of the period was on 2 April 2026, 11 hours 44 minutes behind schedule; most of its delay minutes were filed as extreme weather. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 2 April 2026 | 11 hours 44 minutes | Extreme weather |
| 30 June 2026 | 11 hours 33 minutes | Late-arriving aircraft |
| 17 December 2025 | 11 hours 25 minutes | Extreme weather |
| 19 March 2026 | 10 hours 44 minutes | Carrier |
| 9 June 2026 | 10 hours 19 minutes | Extreme weather |
Delay causes
Why OO 5700 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 7,363 reported delay minutes.
- 33%Extreme weather
- 29%Late-arriving aircraft
- 24%Carrier
- 15%National Airspace System
Extreme weather accounts for 33% 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 5.4 times the usual weather exposure. The split is drawn from 7,363 delay minutes reported on OO 5700.
Cancellations sit at 1.67% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
8.5% 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 close to two hours, which a normal layover absorbs.
The same number turns up on one other city pair in the data, including SAF to DEN (35), but none flew often enough under OO 5700 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to FSD only.
One caution: this is a thin sample. 360 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 5700
For a booking, read OO 5700 as 80.5% on time with 1.67% cancelled over 360 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to FSD, every carrier and departure
- FSD to DEN, the return direction
- SkyWest Airlines 4759 on the same route88.9%
- SkyWest Airlines 5378 on the same route86.4%
- United Airlines 645 on the same route75.8%
- 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
- 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.