Flight number record

OO 4630

SkyWest Airlines · Minot to Denver

Route: MOT → DEN
Departs: 15:19
Flights: 284
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 lands a B, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 284 flights, with a median arrival 11 minutes early.

On time

76.2%

Arrivals under 15 minutes late, of 281 completed flights

Avg delay

121 min

Across delayed arrivals only, not all flights

Cancelled

1.06%

National rate is 1.81%

1 hour+ late

10.3%

National rate is 8.1%

These figures cover 284 flights between July 2025 and June 2026. Beyond the headline rate, 10.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 284 flights, with 15:00 (37 flights) and 15:21 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:1953 flights18.7%
Departs 15:0037 flights13.0%
Departs 15:2137 flights13.0%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 72.4%, and OO 4630 runs 4 points better at 76.2%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4630 next to MOT to DEN

Every carrier on MOT to DEN combined arrived on time 77.4% of the time across 1,143 flights, so OO 4630 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 3 points.

OO 4630 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4630thin sample	284	76.2%	121 min	1.06%	B
All SkyWest Airlines on MOT–DEN	1,143	77.4%	113 min	1.49%	B
All carriers on MOT–DEN	1,143	77.4%	113 min	1.49%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4630 quarter by quarter

Quarter by quarter OO 4630 held fairly steady: 74.3% 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 202574 flights74.3%
Oct–Dec 202591 flights81.1%
Jan–Mar 202669 flights73.1%
Apr–Jun 202650 flights74.0%

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4630 did best on Tuesday at 90.2% on time and worst on Sunday at 67.5%. Each day rests on about 41 flights, so a gap of 23 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4630 runs late

One category carries most of the weight here. Carrier accounts for 50% of the 8,105 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
50%
National Airspace System
24%
Late-arriving aircraft
23%
Extreme weather
2%

The largest share of delay minutes, 50%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,059 of the 8,105 delay minutes reported here. The split is drawn from 8,105 delay minutes reported on OO 4630.

Cancellations sit at 1.06% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum 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. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The same number turns up on four other city pairs in the data, including COS to DEN (18), 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. 284 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 76.2% on time with 1.06% cancelled over 284 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures