Flight number record

OO 5513

SkyWest Airlines · Casper to Denver

Route: CPR → DEN
Departs: 05:30
Flights: 355
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5513, 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 5513 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 14 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 355 flights, with a median arrival 24 minutes early.

Set against the rest of the country, OO 5513's record is 14 points better than the US average of 77.6%. That gap is worth roughly 137 fewer late arrivals for every thousand flights.

On time

91.3%

Arrivals under 15 minutes late, of 355 completed flights

Avg delay

95 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

3.4%

National rate is 8.1%

These figures cover 355 flights between July 2025 and June 2026. The median arrival is 24 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 5513 flies

OO 5513 flies CPR to DEN without a single fixed slot. Its most common scheduled departure was 05:30, used on 222 of 355 flights, with 05:25 (98 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 05:30222 flights62.5%
Departs 05:2598 flights27.6%

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 05:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 5513 runs 2 points better at 91.3%. 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 5513 next to CPR to DEN

Every carrier on CPR to DEN combined arrived on time 81.9% of the time across 2,570 flights, so OO 5513 is 9 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 12 points.

OO 5513 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5513thin sample	355	91.3%	95 min	0.00%	A+
All SkyWest Airlines on CPR–DEN	2,570	81.9%	88 min	0.93%	B+
All carriers on CPR–DEN	2,570	81.9%	88 min	0.93%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5513 quarter by quarter

Quarter by quarter OO 5513 held fairly steady: 87.9% in Jul–Sep 2025, 90.0% in Oct–Dec 2025, 94.4% in Jan–Mar 2026 and 92.9% in Apr–Jun 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights87.9%
Oct–Dec 202590 flights90.0%
Jan–Mar 202689 flights94.4%
Apr–Jun 202685 flights92.9%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5513 ranged from 86.3% on Friday to 95.6% on Saturday. With about 51 flights behind each day, a spread of 9 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 5513 runs late

One category carries most of the weight here. Carrier accounts for 52% of the 2,951 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
52%
Late-arriving aircraft
35%
National Airspace System
8%
Extreme weather
4%

35% 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 2,951 reported delay minutes here, that single category outweighs weather by 8 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 2,951 delay minutes reported on OO 5513.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

Badly late arrivals are rare here: only 3.4% 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 two other city pairs in the data, including ORD to ALB (2) and PSC to DEN (1), but none flew often enough under OO 5513 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to CPR to DEN only.

One caution: this is a thin sample. 355 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 5513

For a booking, OO 5513 has one of the better records a US domestic flight can show: 91.3% on time and 0.00% cancelled. That is a base rate, not a promise about any single 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