Flight number record
OO 5683
SkyWest Airlines · Salt Lake City to Denver
- Route
- SLC → DEN
- Departs
- 05:00
- Flights
- 264
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5683, 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 5683 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 264 flights, with a median arrival 19 minutes early.
Set against the rest of the country, OO 5683's record is 17 points better than the US average of 77.3%. That gap is worth roughly 166 fewer late arrivals for every thousand flights.
Key figures
On time
93.9%
Arrivals under 15 minutes late, of 264 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
2.3%
National rate is 8.3%
These figures cover 264 flights between September 2025 and August 2026. The median arrival is 19 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 5683 flies
OO 5683 flies SLC to DEN without a single fixed slot. Its most common scheduled departure was 05:00, used on 67 of 264 flights, with 05:15 (67 flights) and 05:10 (35 flights) next.
- Departs 05:0067 flights25.4%
- Departs 05:1567 flights25.4%
- Departs 05:1035 flights13.3%
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 05:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5683 runs 5 points better at 93.9%. 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 5683 next to SLC to DEN
Every carrier on SLC to DEN combined arrived on time 79.0% of the time across 7,709 flights, so OO 5683 is 15 points ahead of it. SkyWest flew 1,378 flights on the same city pair under all its flight numbers, including this one, and those ran 85.7% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5683thin sample | 264 | 93.9% | 67 min | 0.00% | A+ |
| All SkyWest Airlines on SLC–DEN | 1,378 | 85.7% | 65 min | 0.58% | A+ |
| All carriers on SLC–DEN | 7,709 | 79.0% | 61 min | 0.51% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5683 quarter by quarter
Quarter by quarter OO 5683 held fairly steady: 97.1% in Oct–Dec 2025, 91.8% in Jan–Mar 2026, 92.3% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202528 flights—
- Oct–Dec 202534 flights97.1%
- Jan–Mar 202649 flights91.8%
- Apr–Jun 202691 flights92.3%
- Jul–Sep 202662 flights95.2%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5683 did best on Monday at 100.0% on time and worst on Friday at 87.5%. Each day rests on about 38 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5683 runs when it is late
OO 5683 often beats the schedule: 172 of 264 completed flights, 65%, arrived 15 minutes or more early. The 16 late arrivals split 6 under half an hour, 4 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early172 flights65.2%
- Within 15 min76 flights28.8%
- 15–29 min late6 flights2.3%
- 30–59 min late4 flights1.5%
- 1–2 hours late3 flights1.1%
- 2+ hours late3 flights1.1%
Scale runs 0% to 100%.
Share of 264 completed flights by arrival against schedule.
Only 19 of 264 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 5683
The latest arrival of the period was on 24 March 2026, 3 hours 59 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 March 2026 | 3 hours 59 minutes | Late-arriving aircraft |
| 4 January 2026 | 2 hours 20 minutes | Carrier |
| 20 February 2026 | 2 hours 18 minutes | Carrier |
| 5 April 2026 | 1 hour 50 minutes | Carrier |
| 24 July 2026 | 1 hour 27 minutes | Carrier |
Delay causes
Why OO 5683 runs late
Carrier accounts for 76% of the 1,076 delay minutes carriers reported here, and the remaining four split what is left.
- 76%Carrier
- 22%Late-arriving aircraft
- 2%National Airspace System
The largest share of delay minutes, 76%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 816 of the 1,076 delay minutes reported here. The split is drawn from 1,076 delay minutes reported on OO 5683.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.3% 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 three other city pairs in the data, including MAF to IAH (34), IAH to MEM (28) and IAH to AUS (4), but none flew often enough under OO 5683 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to DEN only.
One caution: this is a thin sample. 264 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 5683
For a booking, OO 5683 has one of the better records a US domestic flight can show: 93.9% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to DEN, every carrier and departure
- DEN to SLC, the return direction
- Frontier Airlines 3862 on the same route79.6%
- Delta Air Lines 1623 on the same route85.3%
- Delta Air Lines 1586 on the same route68.3%
- Delta Air Lines 1553 on the same route78.9%
- SkyWest Airlines 4720 on the same route90.7%
- Delta Air Lines 1667 on the same route79.7%
- Salt Lake City International (SLC) delay statistics
- 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.