Flight number record
OO 5052
SkyWest Airlines · Denver to Hays
- Route
- DEN → HYS
- Departs
- 21:05
- Flights
- 313
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5052, 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 5052 lands a B, 3 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 about 3.5 hours on average. That rests on 313 flights, with a median arrival 13 minutes early.
Key figures
On time
79.8%
Arrivals under 15 minutes late, of 307 completed flights
Avg delay
211 min
Across delayed arrivals only, not all flights
Cancelled
1.60%
National rate is 1.89%
1 hour+ late
10.4%
National rate is 8.3%
These figures cover 313 flights between September 2025 and August 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5052 flies
OO 5052 flies DEN to HYS without a single fixed slot. Its most common scheduled departure was 21:05, used on 229 of 313 flights, with 20:28 (52 flights) next.
- Departs 21:05229 flights73.2%
- Departs 20:2852 flights16.6%
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 21:05 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5052 runs 10 points better at 79.8%. 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 5052 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 5052 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 5052thin sample | 313 | 79.8% | 211 min | 1.60% | 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 5052 quarter by quarter
OO 5052 did not run the same all year. Its best quarter was Oct–Dec 2025 at 91.0% on time and its weakest Jul–Sep 2026 at 71.0%, a swing of 20 points on roughly 63 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 202530 flights86.7%
- Oct–Dec 202589 flights91.0%
- Jan–Mar 202690 flights72.4%
- Apr–Jun 202673 flights75.7%
- Jul–Sep 202631 flights71.0%
Scale runs 65% to 95%.
By weekday, OO 5052 did best on Tuesday at 91.7% on time and worst on Thursday at 69.6%. Each day rests on about 45 flights, so a gap of 22 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5052 runs when it is late
OO 5052 often beats the schedule: 143 of 307 completed flights, 47%, arrived 15 minutes or more early. When OO 5052 is late it tends to be very late: 32 of its 62 late arrivals were an hour or more behind, and 21 were two hours or more.
- 15+ min early143 flights46.6%
- Within 15 min102 flights33.2%
- 15–29 min late15 flights4.9%
- 30–59 min late15 flights4.9%
- 1–2 hours late11 flights3.6%
- 2+ hours late21 flights6.8%
Scale runs 0% to 100%.
Share of 307 completed flights by arrival against schedule.
14 of 72 late departures made up the time and arrived on time, 19% of them. Only 4 left on time and still arrived late.
The worst days
Worst days for OO 5052
The latest arrival of the period was on 1 June 2026, 16 hours 46 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 1 June 2026 | 16 hours 46 minutes | Late-arriving aircraft |
| 27 December 2025 | 15 hours 49 minutes | Late-arriving aircraft |
| 9 July 2026 | 14 hours 2 minutes | Late-arriving aircraft |
| 8 January 2026 | 12 hours 51 minutes | Carrier |
| 29 May 2026 | 11 hours 49 minutes | Extreme weather |
Delay causes
Why OO 5052 runs late
Carrier accounts for 42% of the 13,000 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Carrier
- 41%Late-arriving aircraft
- 13%Extreme weather
- 4%National Airspace System
Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 13,089 delay minutes reported on OO 5052.
Cancellations sit at 1.60% against a national 1.89%, which is ordinary. Diversions add another 0.32%.
Connections and routes
What a delay on this flight costs
10.4% 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 same number turns up on five other city pairs in the data, including JLN to DEN (31), PIR to DEN (15) and IAH to PAH (13), but none flew often enough under OO 5052 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. 313 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 5052
For a booking, read OO 5052 as 79.8% on time with 1.60% cancelled over 313 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
- 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.