Flight number record
OO 5389
SkyWest Airlines · Denver to Des Moines
- Route
- DEN → DSM
- Departs
- 20:45
- Flights
- 303
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5389, 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 5389 lands a B, 2 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 close to two hours on average. That rests on 303 flights, with a median arrival 11 minutes early.
Key figures
On time
79.7%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
108 min
Across delayed arrivals only, not all flights
Cancelled
1.65%
National rate is 1.89%
1 hour+ late
8.1%
National rate is 8.3%
These figures cover 303 flights between September 2025 and August 2026. Beyond the headline rate, 8.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5389 flies
OO 5389 flies DEN to DSM without a single fixed slot. Its most common scheduled departure was 20:45, used on 146 of 303 flights, with 20:51 (57 flights) and 20:48 (42 flights) next.
- Departs 20:45146 flights48.2%
- Departs 20:5157 flights18.8%
- Departs 20:4842 flights13.9%
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 20:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 5389 runs 10 points better at 79.7%. 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 5389 next to DEN to DSM
Every carrier on DEN to DSM combined arrived on time 79.9% of the time across 2,327 flights, so OO 5389 is about level with it. SkyWest flew 906 flights on the same city pair under all its flight numbers, including this one, and those ran 88.0% on time. 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 5389thin sample | 303 | 79.7% | 108 min | 1.65% | B |
| All SkyWest Airlines on DEN–DSM | 906 | 88.0% | 84 min | 0.99% | A+ |
| All carriers on DEN–DSM | 2,327 | 79.9% | 70 min | 0.56% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5389 quarter by quarter
OO 5389 did not run the same all year. Its best quarter was Oct–Dec 2025 at 92.2% on time and its weakest Jul–Sep 2026 at 56.9%, a swing of 35 points on roughly 76 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.
- Oct–Dec 202566 flights92.2%
- Jan–Mar 202686 flights85.5%
- Apr–Jun 202691 flights80.2%
- Jul–Sep 202660 flights56.9%
Scale runs 50% to 100%.
By weekday, OO 5389 did best on Tuesday at 88.4% on time and worst on Sunday at 72.7%. Each day rests on about 43 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5389 runs when it is late
OO 5389 often beats the schedule: 122 of 296 completed flights, 41%, arrived 15 minutes or more early. The 60 late arrivals split 20 under half an hour, 16 between 30 and 60 minutes, and 24 an hour or more.
- 15+ min early122 flights41.2%
- Within 15 min114 flights38.5%
- 15–29 min late20 flights6.8%
- 30–59 min late16 flights5.4%
- 1–2 hours late12 flights4.1%
- 2+ hours late12 flights4.1%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
13 of 57 late departures made up the time and arrived on time, 23% of them. In the other direction, 16 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 DSM.
The worst days
Worst days for OO 5389
The latest arrival of the period was on 18 March 2026, 14 hours 32 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 March 2026 | 14 hours 32 minutes | Carrier |
| 15 August 2026 | 13 hours 56 minutes | Carrier |
| 31 August 2026 | 12 hours 31 minutes | Carrier |
| 17 May 2026 | 11 hours | Extreme weather |
| 27 July 2026 | 3 hours 37 minutes | Carrier |
Delay causes
Why OO 5389 runs late
Carrier accounts for 60% of the 6,447 delay minutes carriers reported here, and the remaining four split what is left.
- 60%Carrier
- 17%National Airspace System
- 15%Extreme weather
- 7%Late-arriving aircraft
Extreme weather accounts for 15% 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 2.6 times the usual weather exposure. The split is drawn from 6,447 delay minutes reported on OO 5389.
Cancellations sit at 1.65% against a national 1.89%, which is ordinary. Diversions add another 0.66%.
Connections and routes
What a delay on this flight costs
8.1% 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 close to two hours, which a normal layover absorbs.
The 589 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.
Every one of the 303 flights under OO 5389 in the data flew DEN to DSM. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 303 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 5389
For a booking, read OO 5389 as 79.7% on time with 1.65% cancelled over 303 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to DSM, every carrier and departure
- DSM 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
- Connecting flights: how much buffer the data says you need
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.