Flight number record
OO 5989
SkyWest Airlines · Lubbock to Denver
- Route
- LBB → DEN
- Departs
- 17:20
- Flights
- 315
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5989, 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 5989 earns a D, which is as low as this site's scale goes for a reason. Only 57.0% of flights arrive inside the 15-minute window, 20 points worse than the national rate of 77.3%. Late arrivals average a little over an hour. Treat any tight connection here as a coin flip. That rests on 315 flights, with a median arrival 10 minutes late.
The national on-time rate over the same period is 77.3%, so OO 5989 runs 20 points behind the country as a whole. Across a thousand flights that is about 203 extra late arrivals.
Key figures
On time
57.0%
Arrivals under 15 minutes late, of 307 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
1.90%
National rate is 1.89%
1 hour+ late
13.7%
National rate is 8.3%
These figures cover 315 flights between September 2025 and August 2026. Beyond the headline rate, 13.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 5989 flies
OO 5989 flies LBB to DEN without a single fixed slot. Its most common scheduled departure was 17:20, used on 105 of 315 flights.
- Departs 17:20105 flights33.3%
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 17:20 departure sits in the 5pm–8pm window. Across every US flight scheduled in that window the on-time rate is 68.0%, and OO 5989 runs 11 points worse at 57.0%. 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 5989 next to LBB to DEN
Every carrier on LBB to DEN combined arrived on time 77.1% of the time across 983 flights, so OO 5989 is 20 points behind it. SkyWest flew 701 flights on the same city pair under all its flight numbers, including this one, and those ran 71.8% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 22 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5989thin sample | 315 | 57.0% | 71 min | 1.90% | D |
| All SkyWest Airlines on LBB–DEN | 701 | 71.8% | 98 min | 1.57% | C |
| All carriers on LBB–DEN | 983 | 77.1% | 95 min | 1.53% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5989 quarter by quarter
OO 5989 did not run the same all year. Its best quarter was Apr–Jun 2026 at 63.6% on time and its weakest Oct–Dec 2025 at 53.1%, a swing of 11 points on roughly 79 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 202526 flights—
- Oct–Dec 202582 flights53.1%
- Jan–Mar 202677 flights60.8%
- Apr–Jun 202677 flights63.6%
- Jul–Sep 202653 flights55.1%
Scale runs 45% to 70%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5989 ranged from 53.8% on Wednesday to 60.4% on Thursday. With about 45 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 5989 runs when it is late
The 132 late arrivals split 45 under half an hour, 45 between 30 and 60 minutes, and 42 an hour or more.
- 15+ min early46 flights15.0%
- Within 15 min129 flights42.0%
- 15–29 min late45 flights14.7%
- 30–59 min late45 flights14.7%
- 1–2 hours late19 flights6.2%
- 2+ hours late23 flights7.5%
Scale runs 0% to 100%.
Share of 307 completed flights by arrival against schedule.
13 of 91 late departures made up the time and arrived on time, 14% of them. In the other direction, 54 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 5989
The latest arrival of the period was on 29 June 2026, 5 hours 36 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 June 2026 | 5 hours 36 minutes | Carrier |
| 16 January 2026 | 5 hours 20 minutes | Late-arriving aircraft |
| 9 December 2025 | 5 hours 18 minutes | Carrier |
| 13 July 2026 | 5 hours | Late-arriving aircraft |
| 1 July 2026 | 4 hours 52 minutes | Late-arriving aircraft |
Delay causes
Why OO 5989 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 9,301 reported delay minutes.
- 39%National Airspace System
- 29%Late-arriving aircraft
- 27%Carrier
- 5%Extreme weather
39% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 3,610 minutes out of 9,301, against a national NAS share of 21%. The split is drawn from 9,301 delay minutes reported on OO 5989.
Cancellations sit at 1.90% against a national 1.89%, which is ordinary. Diversions add another 0.63%.
Connections and routes
What a delay on this flight costs
13.7% 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 same number turns up on one other city pair in the data, including DEN to IDA (102), but none flew often enough under OO 5989 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LBB to DEN only.
One caution: this is a thin sample. 315 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 5989
For a booking, OO 5989 is a flight to put a long connection behind. 13.7% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.
Related
Where to go next
- LBB to DEN, every carrier and departure
- DEN to LBB, the return direction
- SkyWest Airlines 5791 on the same route83.9%
- 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.