Flight number record

OO 5306

SkyWest Airlines · Denver to Colorado Springs

Route: DEN → COS
Departs: 09:55
Flights: 327
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5306, 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 5306 lands a B, 4 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 327 flights, with a median arrival 8 minutes early.

On time

81.2%

Arrivals under 15 minutes late, of 319 completed flights

Avg delay

65 min

Across delayed arrivals only, not all flights

Cancelled

2.45%

National rate is 1.81%

1 hour+ late

6.0%

National rate is 8.1%

These figures cover 327 flights between July 2025 and June 2026. The median arrival is 8 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 5306 flies

OO 5306 flies DEN to COS without a single fixed slot. Its most common scheduled departure was 09:55, used on 74 of 327 flights, with 10:05 (53 flights) and 09:56 (49 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:5574 flights22.6%
Departs 10:0553 flights16.2%
Departs 09:5649 flights15.0%

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 09:55 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5306 runs 3 points worse at 81.2%. 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 5306 next to DEN to COS

Every carrier on DEN to COS combined arrived on time 75.8% of the time across 5,039 flights, so OO 5306 is 5 points ahead of it. SkyWest flew 3,283 flights on the same city pair under all its flight numbers, including this one, and those ran 76.5% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 2 points.

OO 5306 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5306thin sample	327	81.2%	65 min	2.45%	B
All SkyWest Airlines on DEN–COS	3,283	76.5%	72 min	1.89%	B
All carriers on DEN–COS	5,039	75.8%	67 min	1.45%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5306 quarter by quarter

Quarter by quarter OO 5306 held fairly steady: 81.5% in Jul–Sep 2025, 83.3% in Oct–Dec 2025, 79.2% in Jan–Mar 2026 and 80.0% in Apr–Jun 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights81.5%
Oct–Dec 202592 flights83.3%
Jan–Mar 202653 flights79.2%
Apr–Jun 202690 flights80.0%

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

By weekday, OO 5306 did best on Saturday at 86.7% on time and worst on Friday at 73.3%. Each day rests on about 47 flights, so a gap of 13 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5306 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 47% of the 3,894 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.

Late-arriving aircraft
47%
Carrier
28%
Extreme weather
14%
National Airspace System
11%

Extreme weather accounts for 14% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 2.3 times the usual weather exposure. The split is drawn from 3,894 delay minutes reported on OO 5306.

Cancellations sit at 2.45% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and routes

What a delay on this flight costs

6.0% 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 one other city pair in the data, including CMH to IAH (5), but none flew often enough under OO 5306 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to COS only.

One caution: this is a thin sample. 327 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 5306

For a booking, read OO 5306 as 81.2% on time with 2.45% cancelled over 327 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