Flight number record
OO 5600
SkyWest Airlines · Denver to Peoria
- Route
- DEN → PIA
- Departs
- 17:33
- Flights
- 265
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5600, 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 5600 sits in the middle of the pack with a C+. About seven flights in ten arrive on time by the DOT's definition, 9 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 265 flights, with a median arrival right on schedule.
The national on-time rate over the same period is 77.3%, so OO 5600 runs 9 points behind the country as a whole. Across a thousand flights that is about 90 extra late arrivals.
Key figures
On time
68.3%
Arrivals under 15 minutes late, of 262 completed flights
Avg delay
63 min
Across delayed arrivals only, not all flights
Cancelled
0.38%
National rate is 1.89%
1 hour+ late
9.9%
National rate is 8.3%
These figures cover 265 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.
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 5600 flies
OO 5600 flies DEN to PIA without a single fixed slot. Its most common scheduled departure was 17:33, used on 81 of 265 flights, with 17:30 (77 flights) and 17:45 (52 flights) next.
- Departs 17:3381 flights30.6%
- Departs 17:3077 flights29.1%
- Departs 17:4552 flights19.6%
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 17:33 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5600 runs level with that at 68.3%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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 5600 next to DEN to PIA
Every carrier on DEN to PIA combined arrived on time 69.9% of the time across 432 flights, so OO 5600 is 2 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 10 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5600thin sample | 265 | 68.3% | 63 min | 0.38% | C+ |
| All SkyWest Airlines on DEN–PIAthin sample | 364 | 70.9% | 62 min | 1.37% | C |
| All carriers on DEN–PIA | 432 | 69.9% | 77 min | 1.16% | C |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5600 quarter by quarter
OO 5600 did not run the same all year. Its best quarter was Jan–Mar 2026 at 73.8% on time and its weakest Jul–Sep 2025 at 40.0%, a swing of 34 points on roughly 53 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 flights40.0%
- Oct–Dec 202591 flights71.9%
- Jan–Mar 202642 flights73.8%
- Apr–Jun 202641 flights68.3%
- Jul–Sep 202661 flights73.3%
Scale runs 30% to 80%.
By weekday, OO 5600 ranged from 64.1% on Monday to 71.4% on Saturday. With about 38 flights behind each day, a spread of 7 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 5600 runs when it is late
OO 5600 often beats the schedule: 70 of 262 completed flights, 27%, arrived 15 minutes or more early. The 83 late arrivals split 35 under half an hour, 22 between 30 and 60 minutes, and 26 an hour or more.
- 15+ min early70 flights26.7%
- Within 15 min109 flights41.6%
- 15–29 min late35 flights13.4%
- 30–59 min late22 flights8.4%
- 1–2 hours late17 flights6.5%
- 2+ hours late9 flights3.4%
Scale runs 0% to 100%.
Share of 262 completed flights by arrival against schedule.
7 of 55 late departures made up the time and arrived on time, 13% of them. In the other direction, 35 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 PIA.
The worst days
Worst days for OO 5600
The latest arrival of the period was on 12 July 2026, 12 hours 11 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The five worst days are spread across July, June, January and November, with no single month standing out.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 12 July 2026 | 12 hours 11 minutes | Late-arriving aircraft |
| 8 June 2026 | 4 hours 54 minutes | Extreme weather |
| 18 January 2026 | 3 hours 33 minutes | Carrier |
| 30 November 2025 | 2 hours 50 minutes | Late-arriving aircraft |
| 3 June 2026 | 2 hours 48 minutes | Carrier |
Delay causes
Why OO 5600 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,255 reported delay minutes.
- 41%Carrier
- 28%Late-arriving aircraft
- 19%National Airspace System
- 12%Extreme weather
Extreme weather accounts for 12% 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 1.9 times the usual weather exposure. The split is drawn from 5,255 delay minutes reported on OO 5600.
Cancellations are rare at 0.38%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
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 three other city pairs in the data, including ORD to OKC (24), GEG to SFO (24) and ORD to CHA (15), but none flew often enough under OO 5600 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to PIA only.
One caution: this is a thin sample. 265 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 5600
For a booking, read OO 5600 as 68.3% on time with 0.38% cancelled over 265 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.