Flight number record

OO 4675

SkyWest Airlines · Colorado Springs to Denver

Route: COS → DEN
Departs: 11:35
Flights: 343
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4675, 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 4675 lands a B, 2 points better than the national rate of 77.6%. About one flight in five 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 343 flights, with a median arrival 7 minutes early.

On time

79.1%

Arrivals under 15 minutes late, of 335 completed flights

Avg delay

63 min

Across delayed arrivals only, not all flights

Cancelled

2.33%

National rate is 1.81%

1 hour+ late

6.9%

National rate is 8.1%

These figures cover 343 flights between July 2025 and June 2026. The median arrival is 7 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 4675 flies

OO 4675 flies COS to DEN without a single fixed slot. Its most common scheduled departure was 11:35, used on 122 of 343 flights, with 11:33 (56 flights) and 11:40 (53 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 11:35122 flights35.6%
Departs 11:3356 flights16.3%
Departs 11:4053 flights15.5%

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 11:35 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.8%, and OO 4675 runs level with that at 79.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 4675 next to COS to DEN

Every carrier on COS to DEN combined arrived on time 78.8% of the time across 5,038 flights, so OO 4675 is about level with it. SkyWest flew 3,282 flights on the same city pair under all its flight numbers, including this one, and those ran 81.3% on time. Across its whole network SkyWest Airlines managed 79.0%, close to this flight's figure.

OO 4675 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4675thin sample	343	79.1%	63 min	2.33%	B
All SkyWest Airlines on COS–DEN	3,282	81.3%	75 min	1.68%	B
All carriers on COS–DEN	5,038	78.8%	71 min	1.33%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4675 quarter by quarter

Quarter by quarter OO 4675 held fairly steady: 75.0% in Jul–Sep 2025, 77.1% in Oct–Dec 2025, 82.6% in Jan–Mar 2026 and 82.4% 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 202592 flights75.0%
Oct–Dec 202591 flights77.1%
Jan–Mar 202669 flights82.6%
Apr–Jun 202691 flights82.4%

Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4675 did best on Saturday at 91.7% on time and worst on Thursday at 70.2%. Each day rests on about 49 flights, so a gap of 22 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 4675 runs late

One category carries most of the weight here. Carrier accounts for 45% of the 4,396 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
45%
Late-arriving aircraft
38%
National Airspace System
14%
Extreme weather
3%

38% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 4,396 reported delay minutes here, that single category outweighs weather by 11 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 4,396 delay minutes reported on OO 4675.

Cancellations sit at 2.33% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.9% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

The same number turns up on two other city pairs in the data, including SFO to MTJ (6) and IAH to SAT (1), but none flew often enough under OO 4675 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to COS to DEN only.

One caution: this is a thin sample. 343 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 4675

For a booking, read OO 4675 as 79.1% on time with 2.33% cancelled over 343 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