Flight number record

OO 4674

SkyWest Airlines · Denver to Rapid City

Route: DEN → RAP
Departs: 10:05
Flights: 310
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4674, 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 4674 lands a B, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 310 flights, with a median arrival 4 minutes early.

Set against the rest of the country, OO 4674's record is 5 points better than the US average of 77.6%. That gap is worth roughly 50 fewer late arrivals for every thousand flights.

On time

82.6%

Arrivals under 15 minutes late, of 304 completed flights

Avg delay

56 min

Across delayed arrivals only, not all flights

Cancelled

1.61%

National rate is 1.81%

1 hour+ late

4.9%

National rate is 8.1%

These figures cover 310 flights between July 2025 and June 2026. The median arrival is 4 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.

Schedule

When OO 4674 flies

OO 4674 flies DEN to RAP without a single fixed slot. Its most common scheduled departure was 10:05, used on 62 of 310 flights, with 09:50 (57 flights) and 09:45 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:0562 flights20.0%
Departs 09:5057 flights18.4%
Departs 09:4537 flights11.9%

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 10:05 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 4674 runs level with that at 82.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 4674 next to DEN to RAP

Every carrier on DEN to RAP combined arrived on time 77.9% of the time across 2,887 flights, so OO 4674 is 5 points ahead of it. SkyWest flew 2,125 flights on the same city pair under all its flight numbers, including this one, and those ran 78.6% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 4 points.

OO 4674 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4674thin sample	310	82.6%	56 min	1.61%	B
All SkyWest Airlines on DEN–RAP	2,125	78.6%	70 min	1.41%	B
All carriers on DEN–RAP	2,887	77.9%	68 min	1.14%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4674 quarter by quarter

Quarter by quarter OO 4674 held fairly steady: 83.3% in Jul–Sep 2025, 83.0% in Oct–Dec 2025, 84.5% in Jan–Mar 2026 and 80.0% in Apr–Jun 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202542 flights83.3%
Oct–Dec 202588 flights83.0%
Jan–Mar 202689 flights84.5%
Apr–Jun 202691 flights80.0%

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4674 ranged from 78.6% on Friday to 89.1% on Tuesday. With about 44 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 4674 runs late

One category carries most of the weight here. Carrier accounts for 67% of the 2,987 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
67%
Late-arriving aircraft
12%
National Airspace System
12%
Extreme weather
10%

The largest share of delay minutes, 67%, 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 1,989 of the 2,987 delay minutes reported here. The split is drawn from 2,987 delay minutes reported on OO 4674.

Cancellations sit at 1.61% against a national 1.81%, which is ordinary. Diversions add another 0.32%.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 4.9% land an hour or more behind schedule, against 8.1% 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 same number turns up on three other city pairs in the data, including ATW to ORD (46), DEN to GRR (1) and GRB to ORD (1), but none flew often enough under OO 4674 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to RAP only.

One caution: this is a thin sample. 310 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 4674

For a booking, read OO 4674 as 82.6% on time with 1.61% cancelled over 310 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