Flight number record
OO 5667
SkyWest Airlines · Tulsa to Denver
- Route
- TUL → DEN
- Departs
- 06:00
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5667, 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 5667 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 close to two hours. That rests on 361 flights, with a median arrival 16 minutes early.
Set against the rest of the country, OO 5667's record is 17 points better than the US average of 77.3%. That gap is worth roughly 169 fewer late arrivals for every thousand flights.
Key figures
On time
94.2%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
116 min
Across delayed arrivals only, not all flights
Cancelled
0.55%
National rate is 1.89%
1 hour+ late
1.9%
National rate is 8.3%
These figures cover 361 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 5667 flies
OO 5667 flies TUL to DEN without a single fixed slot. Its most common scheduled departure was 06:00, used on 208 of 361 flights, with 05:45 (113 flights) next.
- Departs 06:00208 flights57.6%
- Departs 05:45113 flights31.3%
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 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 5667 runs 5 points better at 94.2%. 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 5667 next to TUL to DEN
Every carrier on TUL to DEN combined arrived on time 80.4% of the time across 2,474 flights, so OO 5667 is 14 points ahead of it. SkyWest flew 1,173 flights on the same city pair under all its flight numbers, including this one, and those ran 79.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 16 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5667thin sample | 361 | 94.2% | 116 min | 0.55% | A+ |
| All SkyWest Airlines on TUL–DEN | 1,173 | 79.9% | 82 min | 0.94% | B+ |
| All carriers on TUL–DEN | 2,474 | 80.4% | 68 min | 1.05% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5667 quarter by quarter
Quarter by quarter OO 5667 held fairly steady: 100.0% in Jul–Sep 2025, 93.4% in Oct–Dec 2025, 93.1% in Jan–Mar 2026, 92.2% in Apr–Jun 2026 and 96.7% 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 flights100.0%
- Oct–Dec 202591 flights93.4%
- Jan–Mar 202689 flights93.1%
- Apr–Jun 202690 flights92.2%
- Jul–Sep 202661 flights96.7%
Scale runs 85% to 100%.
By weekday, OO 5667 ranged from 90.0% on Sunday to 98.0% on Friday. With about 52 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5667 runs when it is late
OO 5667 often beats the schedule: 199 of 359 completed flights, 55%, arrived 15 minutes or more early. Most of the lateness is short. 11 of the 21 late arrivals were under half an hour behind, and 7 reached an hour or more.
- 15+ min early199 flights55.4%
- Within 15 min139 flights38.7%
- 15–29 min late11 flights3.1%
- 30–59 min late3 flights0.8%
- 1–2 hours late0 flights0.0%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
Only 18 of 359 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 5667
The latest arrival of the period was on 17 March 2026, 8 hours 20 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 8 hours 20 minutes | Late-arriving aircraft |
| 2 April 2026 | 6 hours 59 minutes | Extreme weather |
| 18 August 2026 | 6 hours 23 minutes | Carrier |
| 28 April 2026 | 3 hours 47 minutes | Carrier |
| 17 May 2026 | 3 hours 28 minutes | Carrier |
Delay causes
Why OO 5667 runs late
Carrier accounts for 58% of the 2,438 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 21%Late-arriving aircraft
- 18%Extreme weather
- 3%National Airspace System
Extreme weather accounts for 18% 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 3.1 times the usual weather exposure. The split is drawn from 2,438 delay minutes reported on OO 5667.
Cancellations are rare at 0.55%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is 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 1.9% 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 541 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.
The same number turns up on one other city pair in the data, including STL to ORD (1), but none flew often enough under OO 5667 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to TUL to DEN only.
One caution: this is a thin sample. 361 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 5667
For a booking, OO 5667 has one of the better records a US domestic flight can show: 94.2% on time and 0.55% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- TUL to DEN, every carrier and departure
- DEN to TUL, the return direction
- SkyWest Airlines 5914 on the same route65.0%
- SkyWest Airlines 5276 on the same route85.2%
- 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.