Flight number record
OO 5116
SkyWest Airlines · Denver to Rock Springs
- Route
- DEN → RKS
- Departs
- 12:15
- Flights
- 364
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5116, 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 5116 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 an hour on average. That rests on 364 flights, with a median arrival 9 minutes early.
Key figures
On time
80.1%
Arrivals under 15 minutes late, of 362 completed flights
Avg delay
62 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
5.8%
National rate is 8.3%
These figures cover 364 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 5116 flies
OO 5116 flies DEN to RKS without a single fixed slot. Its most common scheduled departure was 12:15, used on 180 of 364 flights, with 12:10 (152 flights) next.
- Departs 12:15180 flights49.5%
- Departs 12:10152 flights41.8%
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 12:15 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 5116 runs level with that at 80.1%. 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 5116 next to DEN to RKS
Every carrier on DEN to RKS combined arrived on time 78.5% of the time across 728 flights, so OO 5116 is 2 points ahead of 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 5116thin sample | 364 | 80.1% | 62 min | 0.00% | B+ |
| All SkyWest Airlines on DEN–RKS | 728 | 78.5% | 80 min | 0.41% | B+ |
| All carriers on DEN–RKS | 728 | 78.5% | 80 min | 0.41% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5116 quarter by quarter
OO 5116 did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Jan–Mar 2026 at 74.2%, a swing of 13 points on roughly 73 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 202592 flights85.6%
- Jan–Mar 202689 flights74.2%
- Apr–Jun 202691 flights81.3%
- Jul–Sep 202662 flights75.8%
Scale runs 65% to 90%.
By weekday, OO 5116 did best on Tuesday at 90.4% on time and worst on Saturday at 71.2%. Each day rests on about 52 flights, so a gap of 19 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5116 runs when it is late
OO 5116 often beats the schedule: 120 of 362 completed flights, 33%, arrived 15 minutes or more early. The 72 late arrivals split 23 under half an hour, 28 between 30 and 60 minutes, and 21 an hour or more.
- 15+ min early120 flights33.1%
- Within 15 min170 flights47.0%
- 15–29 min late23 flights6.4%
- 30–59 min late28 flights7.7%
- 1–2 hours late12 flights3.3%
- 2+ hours late9 flights2.5%
Scale runs 0% to 100%.
Share of 362 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 68 departures that left 15 minutes late or more, only 6 made it up before arrival. 10 flights left on time and still arrived late.
The worst days
Worst days for OO 5116
The latest arrival of the period was on 29 July 2026, 7 hours 37 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The five worst days are spread across July, March and February, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 July 2026 | 7 hours 37 minutes | Carrier |
| 6 March 2026 | 3 hours 58 minutes | Extreme weather |
| 12 March 2026 | 3 hours 49 minutes | National Airspace System |
| 17 February 2026 | 3 hours 17 minutes | National Airspace System |
| 13 February 2026 | 2 hours 49 minutes | Late-arriving aircraft |
Delay causes
Why OO 5116 runs late
Carrier accounts for 42% of the 4,474 delay minutes carriers reported here, and the remaining four split what is left.
- 42%Carrier
- 35%Late-arriving aircraft
- 16%National Airspace System
- 7%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,474 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 4,474 delay minutes reported on OO 5116.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
5.8% 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 about an hour, which a normal layover absorbs.
The same number turns up on two other city pairs in the data, including RKS to DEN (65) and DDC to DEN (21), but none flew often enough under OO 5116 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to RKS only.
One caution: this is a thin sample. 364 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 5116
For a booking, read OO 5116 as 80.1% on time with 0.00% cancelled over 364 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to RKS, every carrier and departure
- RKS to DEN, 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
- 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.