Flight number record
OO 5673
SkyWest Airlines · Knoxville to Denver
- Route
- TYS → DEN
- Departs
- 08:40
- Flights
- 300
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5673, 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 5673 earns an A. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 300 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 5673's record is 16 points better than the US average of 77.6%. That gap is worth roughly 160 fewer late arrivals for every thousand flights.
Key figures
On time
93.6%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
95 min
Across delayed arrivals only, not all flights
Cancelled
1.00%
National rate is 1.81%
1 hour+ late
3.0%
National rate is 8.1%
These figures cover 300 flights between July 2025 and June 2026. The median arrival is 15 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.
Schedule
When OO 5673 flies
OO 5673 flies TYS to DEN without a single fixed slot. Its most common scheduled departure was 08:40, used on 74 of 300 flights, with 08:45 (57 flights) and 08:50 (51 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 08:4074 flights24.7%
- Departs 08:4557 flights19.0%
- Departs 08:5051 flights17.0%
Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 08:40 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5673 runs 10 points better at 93.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Against the route
OO 5673 next to TYS to DEN
Every carrier on TYS to DEN combined arrived on time 84.8% of the time across 967 flights, so OO 5673 is 9 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5673thin sample | 300 | 93.6% | 95 min | 1.00% | A |
| All SkyWest Airlines on TYS–DEN | 394 | 93.0% | 102 min | 1.27% | A |
| All carriers on TYS–DEN | 967 | 84.8% | 82 min | 0.52% | B+ |
| SkyWest Airlines, whole network | 852,935 | 79.0% | 88 min | 1.77% | B |
Across the year
OO 5673 quarter by quarter
Quarter by quarter OO 5673 held fairly steady: 94.6% in Jul–Sep 2025, 87.6% in Oct–Dec 2025 and 96.5% in Jan–Mar 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 202592 flights94.6%
- Oct–Dec 202590 flights87.6%
- Jan–Mar 202689 flights96.5%
- Apr–Jun 202629 flights—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5673 did best on Friday at 100.0% on time and worst on Thursday at 86.0%. Each day rests on about 43 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Delay causes
Why OO 5673 runs late
One category carries most of the weight here. Carrier accounts for 78% of the 1,797 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 78%Carrier
- 17%Extreme weather
- 5%National Airspace System
Extreme weather accounts for 17% 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 2.7 times the usual weather exposure. The split is drawn from 1,797 delay minutes reported on OO 5673.
Cancellations sit at 1.00% against a national 1.81%, which is ordinary. Diversions add another 0.33%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 3.0% land an hour or more behind schedule, against 8.1% 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 1,162 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The same number turns up on two other city pairs in the data, including MTJ to DEN (41) and ORD to CHO (21), but none flew often enough under OO 5673 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to TYS to DEN only.
One caution: this is a thin sample. 300 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 5673
For a booking, OO 5673 has one of the better records a US domestic flight can show: 93.6% on time and 1.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- TYS to DEN, every carrier and departure
- DEN to TYS, the return direction
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.