Flight number record

OO 5090

SkyWest Airlines · Denver to Sheridan

Route: DEN → SHR
Departs: 21:04
Flights: 251
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5090, 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 5090 lands a B+, 3 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 close to two hours on average. That is a workable record, not a spotless one. That rests on 251 flights, with a median arrival 9 minutes early.

On time

80.6%

Arrivals under 15 minutes late, of 248 completed flights

Avg delay

106 min

Across delayed arrivals only, not all flights

Cancelled

0.80%

National rate is 1.81%

1 hour+ late

8.1%

National rate is 8.1%

These figures cover 251 flights between July 2025 and June 2026. Beyond the headline rate, 8.1% 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 5090 flies

OO 5090 flies DEN to SHR without a single fixed slot. Its most common scheduled departure was 21:04, used on 135 of 251 flights, with 21:05 (98 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:04135 flights53.8%
Departs 21:0598 flights39.0%

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 21:04 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 5090 runs 10 points better at 80.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 5090 next to DEN to SHR

Every carrier on DEN to SHR combined arrived on time 81.5% of the time across 766 flights, so OO 5090 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 2 points.

OO 5090 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5090thin sample	251	80.6%	106 min	0.80%	B+
All SkyWest Airlines on DEN–SHR	766	81.5%	104 min	0.78%	B+
All carriers on DEN–SHR	766	81.5%	104 min	0.78%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5090 quarter by quarter

OO 5090 did not run the same all year. Its best quarter was Oct–Dec 2025 at 95.1% on time and its weakest Jul–Sep 2025 at 73.0%, a swing of 22 points on roughly 63 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights73.0%
Oct–Dec 202561 flights95.1%
Jan–Mar 202648 flights79.2%
Apr–Jun 202650 flights78.0%

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5090 did best on Wednesday at 88.6% on time and worst on Monday at 72.2%. Each day rests on about 36 flights, so a gap of 16 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5090 runs late

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,079 reported delay minutes.

Carrier
37%
Late-arriving aircraft
33%
National Airspace System
19%
Extreme weather
10%

The largest share of delay minutes, 37%, 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 1,887 of the 5,079 delay minutes reported here. The split is drawn from 5,079 delay minutes reported on OO 5090.

Cancellations are rare at 0.80%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

8.1% 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 close to two hours, which a normal layover absorbs.

The same number turns up on six other city pairs in the data, including LBF to DEN (43), DEN to COD (35) and HYS to DEN (23), but none flew often enough under OO 5090 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to DEN to SHR only.

One caution: this is a thin sample. 251 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 5090

For a booking, read OO 5090 as 80.6% on time with 0.80% cancelled over 251 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