Flight number record
OO 5455
SkyWest Airlines · Peoria to Denver
- Route
- PIA → DEN
- Departs
- 08:45
- Flights
- 341
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5455, 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 5455 sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 5 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 341 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.3%, so OO 5455 runs 5 points behind the country as a whole. Across a thousand flights that is about 45 extra late arrivals.
Key figures
On time
72.8%
Arrivals under 15 minutes late, of 334 completed flights
Avg delay
66 min
Across delayed arrivals only, not all flights
Cancelled
1.76%
National rate is 1.89%
1 hour+ late
9.9%
National rate is 8.3%
These figures cover 341 flights between September 2025 and August 2026. Beyond the headline rate, 9.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5455 flies
OO 5455 flies PIA to DEN without a single fixed slot. Its most common scheduled departure was 08:45, used on 103 of 341 flights, with 08:35 (55 flights) and 08:50 (53 flights) next.
- Departs 08:45103 flights30.2%
- Departs 08:3555 flights16.1%
- Departs 08:5053 flights15.5%
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 08:45 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5455 runs 11 points worse at 72.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 5455 next to PIA to DEN
Every carrier on PIA to DEN combined arrived on time 74.1% of the time across 432 flights, so OO 5455 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5455thin sample | 341 | 72.8% | 66 min | 1.76% | C |
| All SkyWest Airlines on PIA–DENthin sample | 364 | 73.9% | 66 min | 1.65% | C |
| All carriers on PIA–DEN | 432 | 74.1% | 69 min | 1.62% | C |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5455 quarter by quarter
OO 5455 did not run the same all year. Its best quarter was Apr–Jun 2026 at 90.0% on time and its weakest Jan–Mar 2026 at 43.0%, a swing of 47 points on roughly 85 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 20257 flights—
- Oct–Dec 202592 flights74.4%
- Jan–Mar 202690 flights43.0%
- Apr–Jun 202691 flights90.0%
- Jul–Sep 202661 flights85.2%
Scale runs 35% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5455 did best on Wednesday at 78.7% on time and worst on Monday at 62.0%. Each day rests on about 49 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5455 runs when it is late
The 91 late arrivals split 34 under half an hour, 24 between 30 and 60 minutes, and 33 an hour or more.
- 15+ min early81 flights24.3%
- Within 15 min162 flights48.5%
- 15–29 min late34 flights10.2%
- 30–59 min late24 flights7.2%
- 1–2 hours late21 flights6.3%
- 2+ hours late12 flights3.6%
Scale runs 0% to 100%.
Share of 334 completed flights by arrival against schedule.
10 of 55 late departures made up the time and arrived on time, 18% of them. In the other direction, 46 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 DEN.
The worst days
Worst days for OO 5455
The latest arrival of the period was on 30 December 2025, 7 hours 31 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in December 2025.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 30 December 2025 | 7 hours 31 minutes | Carrier |
| 13 December 2025 | 6 hours 14 minutes | Carrier |
| 19 December 2025 | 4 hours 37 minutes | National Airspace System |
| 9 June 2026 | 4 hours 1 minute | Carrier |
| 30 November 2025 | 3 hours 18 minutes | Extreme weather |
Delay causes
Why OO 5455 runs late
Carrier accounts for 77% of the 6,020 delay minutes carriers reported here, and the remaining four split what is left.
- 77%Carrier
- 18%National Airspace System
- 4%Extreme weather
- 1%Late-arriving aircraft
The largest share of delay minutes, 77%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,657 of the 6,020 delay minutes reported here. The split is drawn from 6,020 delay minutes reported on OO 5455.
Cancellations sit at 1.76% against a national 1.89%, which is ordinary. Diversions add another 0.29%.
Connections and routes
What a delay on this flight costs
9.9% 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 793 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 one other city pair in the data, including ORD to BHM (1), but none flew often enough under OO 5455 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to PIA to DEN only.
One caution: this is a thin sample. 341 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 5455
For a booking, read OO 5455 as 72.8% on time with 1.76% cancelled over 341 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.