Flight number record
OO 4629
SkyWest Airlines · Denver to Fargo
- Route
- DEN → FAR
- Departs
- 13:25
- Flights
- 342
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4629, 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 4629 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 55 minutes. That rests on 342 flights, with a median arrival 11 minutes early.
Set against the rest of the country, OO 4629's record is 9 points better than the US average of 77.3%. That gap is worth roughly 90 fewer late arrivals for every thousand flights.
Key figures
On time
86.3%
Arrivals under 15 minutes late, of 336 completed flights
Avg delay
55 min
Across delayed arrivals only, not all flights
Cancelled
1.75%
National rate is 1.89%
1 hour+ late
4.5%
National rate is 8.3%
These figures cover 342 flights between September 2025 and August 2026. The median arrival is 11 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
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Schedule
When OO 4629 flies
OO 4629 flies DEN to FAR without a single fixed slot. Its most common scheduled departure was 13:25, used on 136 of 342 flights, with 13:30 (82 flights) and 13:31 (45 flights) next.
- Departs 13:25136 flights39.8%
- Departs 13:3082 flights24.0%
- Departs 13:3145 flights13.2%
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 13:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 4629 runs 8 points better at 86.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 4629 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 4629 is 7 points ahead of 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 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4629thin sample | 342 | 86.3% | 55 min | 1.75% | A |
| 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 4629 quarter by quarter
OO 4629 did not run the same all year. Its best quarter was Jul–Sep 2025 at 100.0% on time and its weakest Jan–Mar 2026 at 75.6%, a swing of 24 points on roughly 68 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 flights100.0%
- Oct–Dec 202590 flights84.3%
- Jan–Mar 202690 flights75.6%
- Apr–Jun 202691 flights90.0%
- Jul–Sep 202641 flights95.1%
Scale runs 65% to 100%.
By weekday, OO 4629 did best on Tuesday at 95.8% on time and worst on Sunday at 80.9%. Each day rests on about 49 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4629 runs when it is late
OO 4629 often beats the schedule: 125 of 336 completed flights, 37%, arrived 15 minutes or more early. The 46 late arrivals split 21 under half an hour, 10 between 30 and 60 minutes, and 15 an hour or more.
- 15+ min early125 flights37.2%
- Within 15 min165 flights49.1%
- 15–29 min late21 flights6.3%
- 30–59 min late10 flights3.0%
- 1–2 hours late11 flights3.3%
- 2+ hours late4 flights1.2%
Scale runs 0% to 100%.
Share of 336 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 34 departures that left 15 minutes late or more, only 4 made it up before arrival. 16 flights left on time and still arrived late.
The worst days
Worst days for OO 4629
The latest arrival of the period was on 29 December 2025, 3 hours 10 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 29 December 2025 | 3 hours 10 minutes | Late-arriving aircraft |
| 19 December 2025 | 3 hours 3 minutes | Late-arriving aircraft |
| 6 March 2026 | 2 hours 41 minutes | Late-arriving aircraft |
| 25 January 2026 | 2 hours 36 minutes | Late-arriving aircraft |
| 16 April 2026 | 1 hour 55 minutes | Carrier |
Delay causes
Why OO 4629 runs late
Late-arriving aircraft accounts for 48% of the 2,513 delay minutes carriers reported here, and the remaining four split what is left.
- 48%Late-arriving aircraft
- 31%Carrier
- 15%National Airspace System
- 6%Extreme weather
48% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,513 reported delay minutes here, that single category outweighs weather by 8 to one. The split is drawn from 2,513 delay minutes reported on OO 4629.
Cancellations sit at 1.75% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 4.5% land an hour or more behind schedule, against 8.3% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
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 two other city pairs in the data, including ATW to ORD (18) and DEN to FAT (1), but none flew often enough under OO 4629 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. 342 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 4629
For a booking, read OO 4629 as 86.3% on time with 1.75% cancelled over 342 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 4688 on the same route80.6%
- 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
- Why the first flight of the morning is statistically safest
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.