Flight number record
OO 5513
SkyWest Airlines · Casper to Denver
- Route
- CPR → DEN
- Departs
- 05:30
- Flights
- 346
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5513, 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 5513 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 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 346 flights, with a median arrival 27 minutes early.
Set against the rest of the country, OO 5513's record is 14 points better than the US average of 77.3%. That gap is worth roughly 143 fewer late arrivals for every thousand flights.
Key figures
On time
91.6%
Arrivals under 15 minutes late, of 346 completed flights
Avg delay
106 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
4.3%
National rate is 8.3%
These figures cover 346 flights between September 2025 and August 2026. The median arrival is 27 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 5513 flies
OO 5513 flies CPR to DEN without a single fixed slot. Its most common scheduled departure was 05:30, used on 161 of 346 flights, with 05:25 (98 flights) and 05:15 (87 flights) next.
- Departs 05:30161 flights46.5%
- Departs 05:2598 flights28.3%
- Departs 05:1587 flights25.1%
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 05:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5513 runs 2 points better at 91.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 5513 next to CPR to DEN
Every carrier on CPR to DEN combined arrived on time 83.1% of the time across 2,629 flights, so OO 5513 is 9 points ahead of it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5513thin sample | 346 | 91.6% | 106 min | 0.00% | A+ |
| All SkyWest Airlines on CPR–DEN | 2,629 | 83.1% | 91 min | 0.95% | B+ |
| All carriers on CPR–DEN | 2,629 | 83.1% | 91 min | 0.95% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5513 quarter by quarter
OO 5513 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jul–Sep 2026 at 82.7%, a swing of 17 points on roughly 69 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 flights100.0%
- Oct–Dec 202590 flights90.0%
- Jan–Mar 202689 flights94.4%
- Apr–Jun 202685 flights92.9%
- Jul–Sep 202652 flights82.7%
Scale runs 75% to 100%.
By weekday, OO 5513 ranged from 86.8% on Monday to 96.1% on Wednesday. With about 49 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5513 runs when it is late
OO 5513 often beats the schedule: 264 of 346 completed flights, 76%, arrived 15 minutes or more early. When OO 5513 is late it tends to be very late: 15 of its 29 late arrivals were an hour or more behind, and 8 were two hours or more.
- 15+ min early264 flights76.3%
- Within 15 min53 flights15.3%
- 15–29 min late9 flights2.6%
- 30–59 min late5 flights1.4%
- 1–2 hours late7 flights2.0%
- 2+ hours late8 flights2.3%
Scale runs 0% to 100%.
Share of 346 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 23 departures that left 15 minutes late or more, only 2 made it up before arrival. 8 flights left on time and still arrived late.
The worst days
Worst days for OO 5513
The latest arrival of the period was on 28 December 2025, 5 hours 51 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 |
|---|---|---|
| 28 December 2025 | 5 hours 51 minutes | Late-arriving aircraft |
| 23 January 2026 | 5 hours 28 minutes | Carrier |
| 16 December 2025 | 4 hours 57 minutes | Late-arriving aircraft |
| 9 January 2026 | 4 hours 24 minutes | Late-arriving aircraft |
| 30 August 2026 | 3 hours 54 minutes | National Airspace System |
Delay causes
Why OO 5513 runs late
Carrier accounts for 56% of the 3,081 delay minutes carriers reported here, and the remaining four split what is left.
- 56%Carrier
- 30%Late-arriving aircraft
- 14%National Airspace System
- 0%Extreme weather
The largest share of delay minutes, 56%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,718 of the 3,081 delay minutes reported here. The split is drawn from 3,081 delay minutes reported on OO 5513.
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
Badly late arrivals are rare here: only 4.3% 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 same number turns up on three other city pairs in the data, including IDA to ORD (3), ORD to ALB (2) and PSC to DEN (1), but none flew often enough under OO 5513 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CPR to DEN only.
One caution: this is a thin sample. 346 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 5513
For a booking, OO 5513 has one of the better records a US domestic flight can show: 91.6% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- CPR to DEN, every carrier and departure
- DEN to CPR, the return direction
- SkyWest Airlines 5245 on the same route84.0%
- SkyWest Airlines 5818 on the same route88.1%
- SkyWest Airlines 4658 on the same route88.5%
- SkyWest Airlines 4631 on the same route83.8%
- SkyWest Airlines 4666 on the same route77.1%
- SkyWest Airlines 5809 on the same route77.1%
- 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.