Flight number record
OO 4630
SkyWest Airlines · Minot to Denver
- Route
- MOT → DEN
- Departs
- 15:19
- Flights
- 261
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4630, 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 4630 sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, about a point worse than the national rate of 77.3%. The late ones land close to two hours behind schedule. That rests on 261 flights, with a median arrival 12 minutes early.
Key figures
On time
75.9%
Arrivals under 15 minutes late, of 257 completed flights
Avg delay
122 min
Across delayed arrivals only, not all flights
Cancelled
1.15%
National rate is 1.89%
1 hour+ late
9.7%
National rate is 8.3%
These figures cover 261 flights between September 2025 and August 2026. Beyond the headline rate, 9.7% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4630 flies
OO 4630 flies MOT to DEN without a single fixed slot. Its most common scheduled departure was 15:19, used on 53 of 261 flights, with 15:21 (37 flights) and 14:58 (36 flights) next.
- Departs 15:1953 flights20.3%
- Departs 15:2137 flights14.2%
- Departs 14:5836 flights13.8%
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 15:19 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 71.9%, and OO 4630 runs 4 points better at 75.9%. 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 4630 next to MOT to DEN
Every carrier on MOT to DEN combined arrived on time 80.0% of the time across 1,056 flights, so OO 4630 is 4 points behind it. Across its whole network SkyWest Airlines managed 78.7%, which this flight trails by 3 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4630thin sample | 261 | 75.9% | 122 min | 1.15% | B |
| All SkyWest Airlines on MOT–DEN | 1,056 | 80.0% | 114 min | 1.23% | B |
| All carriers on MOT–DEN | 1,056 | 80.0% | 114 min | 1.23% | B |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4630 quarter by quarter
Quarter by quarter OO 4630 held fairly steady: 76.7% in Jul–Sep 2025, 81.1% in Oct–Dec 2025, 73.1% in Jan–Mar 2026 and 74.0% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights76.7%
- Oct–Dec 202591 flights81.1%
- Jan–Mar 202669 flights73.1%
- Apr–Jun 202650 flights74.0%
- Jul–Sep 202621 flights—
Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4630 did best on Tuesday at 91.9% on time and worst on Thursday at 61.1%. Each day rests on about 37 flights, so a gap of 31 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4630 runs when it is late
OO 4630 often beats the schedule: 117 of 257 completed flights, 46%, arrived 15 minutes or more early. The 62 late arrivals split 20 under half an hour, 17 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early117 flights45.5%
- Within 15 min78 flights30.4%
- 15–29 min late20 flights7.8%
- 30–59 min late17 flights6.6%
- 1–2 hours late9 flights3.5%
- 2+ hours late16 flights6.2%
Scale runs 0% to 100%.
Share of 257 completed flights by arrival against schedule.
8 of 57 late departures made up the time and arrived on time, 14% of them. In the other direction, 13 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 4630
The latest arrival of the period was on 17 March 2026, 23 hours 10 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 | 23 hours 10 minutes | Carrier |
| 15 March 2026 | 18 hours 53 minutes | Carrier |
| 18 March 2026 | 9 hours 2 minutes | Carrier |
| 14 August 2026 | 7 hours 24 minutes | Extreme weather |
| 28 December 2025 | 4 hours 35 minutes | Carrier |
Delay causes
Why OO 4630 runs late
Carrier accounts for 54% of the 7,576 delay minutes carriers reported here, and the remaining four split what is left.
- 54%Carrier
- 20%Late-arriving aircraft
- 18%National Airspace System
- 8%Extreme weather
The largest share of delay minutes, 54%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,090 of the 7,576 delay minutes reported here. The split is drawn from 7,576 delay minutes reported on OO 4630.
Cancellations sit at 1.15% against a national 1.89%, which is ordinary. Diversions add another 0.38%.
Connections and routes
What a delay on this flight costs
9.7% 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 604 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 five other city pairs in the data, including ORD to FWA (35), ABQ to DEN (4) and SFO to TUS (4), but none flew often enough under OO 4630 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to MOT to DEN only.
One caution: this is a thin sample. 261 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 4630
For a booking, read OO 4630 as 75.9% on time with 1.15% cancelled over 261 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- MOT to DEN, every carrier and departure
- DEN to MOT, the return direction
- SkyWest Airlines 5678 on the same route85.3%
- 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.