Flight number record
OO 5797
SkyWest Airlines · Denver to Columbia
- Route
- DEN → COU
- Departs
- 17:30
- Flights
- 257
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5797, 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 5797 lands a B, 2 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 an hour and a half on average. That rests on 257 flights, with a median arrival 7 minutes early.
Key figures
On time
79.0%
Arrivals under 15 minutes late, of 252 completed flights
Avg delay
99 min
Across delayed arrivals only, not all flights
Cancelled
1.95%
National rate is 1.89%
1 hour+ late
9.1%
National rate is 8.3%
These figures cover 257 flights between September 2025 and August 2026. Beyond the headline rate, 9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5797 flies
OO 5797 flies DEN to COU without a single fixed slot. Its most common scheduled departure was 17:30, used on 140 of 257 flights, with 17:59 (32 flights) next.
- Departs 17:30140 flights54.5%
- Departs 17:5932 flights12.5%
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 17:30 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5797 runs 11 points better at 79.0%. 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 5797 next to DEN to COU
Every carrier on DEN to COU combined arrived on time 80.4% of the time across 341 flights, so OO 5797 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5797thin sample | 257 | 79.0% | 99 min | 1.95% | B |
| All SkyWest Airlines on DEN–COUthin sample | 341 | 80.4% | 117 min | 1.47% | B |
| All carriers on DEN–COUthin sample | 341 | 80.4% | 117 min | 1.47% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5797 quarter by quarter
OO 5797 did not run the same all year. Its best quarter was Jan–Mar 2026 at 87.2% on time and its weakest Jul–Sep 2026 at 62.9%, a swing of 24 points on roughly 86 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.
- Oct–Dec 202514 flights—
- Jan–Mar 202690 flights87.2%
- Apr–Jun 202691 flights83.3%
- Jul–Sep 202662 flights62.9%
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5797 ranged from 72.2% on Friday to 82.9% on Saturday. With about 37 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5797 runs when it is late
OO 5797 often beats the schedule: 85 of 252 completed flights, 34%, arrived 15 minutes or more early. The 53 late arrivals split 12 under half an hour, 18 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early85 flights33.7%
- Within 15 min114 flights45.2%
- 15–29 min late12 flights4.8%
- 30–59 min late18 flights7.1%
- 1–2 hours late14 flights5.6%
- 2+ hours late9 flights3.6%
Scale runs 0% to 100%.
Share of 252 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 38 departures that left 15 minutes late or more, only 1 made it up before arrival. In the other direction, 16 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at COU.
The worst days
Worst days for OO 5797
The latest arrival of the period was on 26 April 2026, 16 hours 42 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across April, January, August and June, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 26 April 2026 | 16 hours 42 minutes | Carrier |
| 8 January 2026 | 11 hours 36 minutes | National Airspace System |
| 14 August 2026 | 4 hours 43 minutes | Carrier |
| 8 June 2026 | 4 hours 18 minutes | National Airspace System |
| 15 August 2026 | 3 hours 21 minutes | Security |
Delay causes
Why OO 5797 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 5,240 reported delay minutes.
- 38%Carrier
- 34%National Airspace System
- 13%Late-arriving aircraft
- 11%Extreme weather
- 4%Security
Extreme weather accounts for 11% 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 1.9 times the usual weather exposure. The split is drawn from 5,240 delay minutes reported on OO 5797.
Cancellations sit at 1.95% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
9.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The 671 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 two other city pairs in the data, including SFO to FCA (6) and ATW to ORD (2), but none flew often enough under OO 5797 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to COU only.
One caution: this is a thin sample. 257 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 5797
For a booking, read OO 5797 as 79.0% on time with 1.95% cancelled over 257 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- 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 often a connection fails at the major US hubs
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.