Flight number record
OO 5042
SkyWest Airlines · Denver to Hays
- Route
- DEN → HYS
- Departs
- 16:20
- Flights
- 267
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5042, 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 5042 lands a B, 4 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 a little over an hour on average. That rests on 267 flights, with a median arrival 9 minutes early.
Key figures
On time
81.0%
Arrivals under 15 minutes late, of 258 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
2.62%
National rate is 1.89%
1 hour+ late
6.2%
National rate is 8.3%
These figures cover 267 flights between September 2025 and August 2026. The median arrival is 9 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 5042 flies
OO 5042 is scheduled to leave Denver (DEN) at 16:20 local time and reach Hays (HYS) at 18:32. That slot held for 228 of the 267 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 16:20228 flights85.4%
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 16:20 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 5042 runs 9 points better at 81.0%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 5042 next to DEN to HYS
Every carrier on DEN to HYS combined arrived on time 80.5% of the time across 589 flights, so OO 5042 is about level with it. 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 5042thin sample | 267 | 81.0% | 78 min | 2.62% | B |
| All SkyWest Airlines on DEN–HYS | 589 | 80.5% | 151 min | 2.04% | B |
| All carriers on DEN–HYS | 589 | 80.5% | 151 min | 2.04% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5042 quarter by quarter
OO 5042 did not run the same all year. Its best quarter was Oct–Dec 2025 at 89.4% on time and its weakest Jul–Sep 2026 at 54.8%, a swing of 35 points on roughly 67 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 202521 flights—
- Oct–Dec 202567 flights89.4%
- Jan–Mar 202664 flights83.9%
- Apr–Jun 202683 flights80.8%
- Jul–Sep 202632 flights54.8%
Scale runs 45% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5042 ranged from 76.1% on Sunday to 87.2% on Wednesday. With about 38 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 5042 runs when it is late
The 49 late arrivals split 14 under half an hour, 19 between 30 and 60 minutes, and 16 an hour or more.
- 15+ min early62 flights24.0%
- Within 15 min147 flights57.0%
- 15–29 min late14 flights5.4%
- 30–59 min late19 flights7.4%
- 1–2 hours late6 flights2.3%
- 2+ hours late10 flights3.9%
Scale runs 0% to 100%.
Share of 258 completed flights by arrival against schedule.
6 of 44 late departures made up the time and arrived on time, 14% of them. 11 flights left on time and still arrived late.
The worst days
Worst days for OO 5042
The latest arrival of the period was on 17 July 2026, 5 hours 28 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 July 2026 | 5 hours 28 minutes | Late-arriving aircraft |
| 16 June 2026 | 4 hours 25 minutes | Late-arriving aircraft |
| 8 July 2026 | 4 hours 2 minutes | Late-arriving aircraft |
| 5 May 2026 | 3 hours 49 minutes | Late-arriving aircraft |
| 25 January 2026 | 3 hours 46 minutes | Late-arriving aircraft |
Delay causes
Why OO 5042 runs late
Late-arriving aircraft accounts for 54% of the 3,802 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Late-arriving aircraft
- 29%Carrier
- 14%National Airspace System
- 3%Extreme weather
54% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,802 reported delay minutes here, that single category outweighs weather by 20 to one. The split is drawn from 3,802 delay minutes reported on OO 5042.
Cancellations run at 2.62%, against 1.89% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
6.2% 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 a little over an hour, which a normal layover absorbs.
The same number turns up on five other city pairs in the data, including HYS to DEN (41), SUX to DEN (21) and DEN to DDC (15), but none flew often enough under OO 5042 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to HYS only.
One caution: this is a thin sample. 267 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 5042
For a booking, the cancellation rate is the figure to plan around on OO 5042: 2.62% of its 267 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
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
- Why the first flight of the morning is statistically safest
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.