Flight number record
OO 4688
SkyWest Airlines · Denver to Fargo
- Route
- DEN → FAR
- Departs
- 09:35
- Flights
- 361
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4688, 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 4688 lands a B+, 3 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 an hour and a half on average. That rests on 361 flights, with a median arrival 5 minutes early.
Key figures
On time
80.6%
Arrivals under 15 minutes late, of 356 completed flights
Avg delay
87 min
Across delayed arrivals only, not all flights
Cancelled
0.83%
National rate is 1.89%
1 hour+ late
9.0%
National rate is 8.3%
These figures cover 361 flights between September 2025 and August 2026. Beyond the headline rate, 9.0% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4688 flies
OO 4688 flies DEN to FAR without a single fixed slot. Its most common scheduled departure was 09:35, used on 102 of 361 flights, with 09:50 (81 flights) and 09:52 (68 flights) next.
- Departs 09:35102 flights28.3%
- Departs 09:5081 flights22.4%
- Departs 09:5268 flights18.8%
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 09:35 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 4688 runs 3 points worse at 80.6%. 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 4688 next to DEN to FAR
Every carrier on DEN to FAR combined arrived on time 79.7% of the time across 1,415 flights, so OO 4688 is about level with it. SkyWest flew 879 flights on the same city pair under all its flight numbers, including this one, and those ran 80.5% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4688thin sample | 361 | 80.6% | 87 min | 0.83% | B+ |
| All SkyWest Airlines on DEN–FAR | 879 | 80.5% | 74 min | 1.14% | B |
| All carriers on DEN–FAR | 1,415 | 79.7% | 73 min | 0.71% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4688 quarter by quarter
OO 4688 did not run the same all year. Its best quarter was Jul–Sep 2026 at 86.9% on time and its weakest Oct–Dec 2025 at 75.0%, a swing of 12 points on roughly 72 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 flights86.7%
- Oct–Dec 202589 flights75.0%
- Jan–Mar 202690 flights75.9%
- Apr–Jun 202691 flights84.4%
- Jul–Sep 202661 flights86.9%
Scale runs 65% to 90%.
By weekday, OO 4688 did best on Tuesday at 86.3% on time and worst on Friday at 73.1%. Each day rests on about 52 flights, so a gap of 13 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4688 runs when it is late
The 69 late arrivals split 24 under half an hour, 13 between 30 and 60 minutes, and 32 an hour or more.
- 15+ min early88 flights24.7%
- Within 15 min199 flights55.9%
- 15–29 min late24 flights6.7%
- 30–59 min late13 flights3.7%
- 1–2 hours late17 flights4.8%
- 2+ hours late15 flights4.2%
Scale runs 0% to 100%.
Share of 356 completed flights by arrival against schedule.
9 of 59 late departures made up the time and arrived on time, 15% of them. In the other direction, 19 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 FAR.
The worst days
Worst days for OO 4688
The latest arrival of the period was on 17 March 2026, 7 hours 3 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 March 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 17 March 2026 | 7 hours 3 minutes | Carrier |
| 19 December 2025 | 7 hours 2 minutes | Carrier |
| 8 December 2025 | 6 hours 47 minutes | Carrier |
| 7 March 2026 | 5 hours 30 minutes | Carrier |
| 6 March 2026 | 4 hours 55 minutes | Extreme weather |
Delay causes
Why OO 4688 runs late
Carrier accounts for 69% of the 5,992 delay minutes carriers reported here, and the remaining four split what is left.
- 69%Carrier
- 17%Late-arriving aircraft
- 8%National Airspace System
- 6%Extreme weather
The largest share of delay minutes, 69%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,160 of the 5,992 delay minutes reported here. The split is drawn from 5,992 delay minutes reported on OO 4688.
Cancellations are rare at 0.83%, 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
9.0% 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 627 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 FAT to LAX (1), AMA to DEN (1) and ORD to ICT (1), but none flew often enough under OO 4688 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to FAR only.
One caution: this is a thin sample. 361 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 4688
For a booking, read OO 4688 as 80.6% on time with 0.83% cancelled over 361 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- DEN to FAR, every carrier and departure
- FAR to DEN, the return direction
- SkyWest Airlines 4629 on the same route86.3%
- 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.