Flight number record

OO 5576

SkyWest Airlines · Rapid City to Denver

Route: RAP → DEN
Departs: 05:30
Flights: 323
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5576, 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 5576 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 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 2.5 hours. That rests on 323 flights, with a median arrival 16 minutes early.

Set against the rest of the country, OO 5576's record is 11 points better than the US average of 77.6%. That gap is worth roughly 109 fewer late arrivals for every thousand flights.

On time

88.5%

Arrivals under 15 minutes late, of 322 completed flights

Avg delay

150 min

Across delayed arrivals only, not all flights

Cancelled

0.31%

National rate is 1.81%

1 hour+ late

6.5%

National rate is 8.1%

These figures cover 323 flights between July 2025 and June 2026. The median arrival is 16 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 5576 flies

OO 5576 flies RAP to DEN without a single fixed slot. Its most common scheduled departure was 05:30, used on 115 of 323 flights, with 05:15 (69 flights) and 05:20 (47 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 05:30115 flights35.6%
Departs 05:1569 flights21.4%
Departs 05:2047 flights14.6%

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 5576 runs level with that at 88.5%. 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 5576 next to RAP to DEN

Every carrier on RAP to DEN combined arrived on time 79.0% of the time across 2,887 flights, so OO 5576 is 10 points ahead of it. SkyWest flew 2,126 flights on the same city pair under all its flight numbers, including this one, and those ran 77.8% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 10 points.

OO 5576 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5576thin sample	323	88.5%	150 min	0.31%	A+
All SkyWest Airlines on RAP–DEN	2,126	77.8%	85 min	1.51%	B
All carriers on RAP–DEN	2,887	79.0%	80 min	1.35%	B
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5576 quarter by quarter

Quarter by quarter OO 5576 held fairly steady: 88.9% in Jul–Sep 2025, 85.4% in Oct–Dec 2025, 89.9% in Jan–Mar 2026 and 90.7% 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 202590 flights88.9%
Oct–Dec 202589 flights85.4%
Jan–Mar 202689 flights89.9%
Apr–Jun 202655 flights90.7%

Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5576 did best on Sunday at 97.8% on time and worst on Monday at 80.4%. Each day rests on about 46 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5576 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 5,539 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
55%
Extreme weather
25%
Late-arriving aircraft
14%
National Airspace System
5%

Extreme weather accounts for 25% 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 4.1 times the usual weather exposure. The split is drawn from 5,539 delay minutes reported on OO 5576.

Cancellations are rare at 0.31%, 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

6.5% 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 2.5 hours, which a normal layover absorbs.

The same number turns up on four other city pairs in the data, including FAR to ORD (23), ORD to FSD (10) and TVC to ORD (1), but none flew often enough under OO 5576 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to RAP to DEN only.

One caution: this is a thin sample. 323 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 5576

For a booking, OO 5576 has one of the better records a US domestic flight can show: 88.5% on time and 0.31% 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