Flight number record

OO 5481

SkyWest Airlines · Denver to Springfield

Route: DEN → SGF
Departs: 09:50
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5481, 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 5481 lands a B+, 5 points better than the national rate of 77.6%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That is a workable record, not a spotless one. That rests on 365 flights, with a median arrival 8 minutes early.

Set against the rest of the country, OO 5481's record is 5 points better than the US average of 77.6%. That gap is worth roughly 47 fewer late arrivals for every thousand flights.

On time

82.3%

Arrivals under 15 minutes late, of 361 completed flights

Avg delay

48 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

4.4%

National rate is 8.1%

These figures cover 365 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 5481 flies

OO 5481 flies DEN to SGF without a single fixed slot. Its most common scheduled departure was 09:50, used on 88 of 365 flights, with 09:55 (81 flights) and 09:54 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:5088 flights24.1%
Departs 09:5581 flights22.2%
Departs 09:5441 flights11.2%

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 09:50 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5481 runs level with that at 82.3%. 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 5481 next to DEN to SGF

Every carrier on DEN to SGF combined arrived on time 78.2% of the time across 1,284 flights, so OO 5481 is 4 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 3 points.

OO 5481 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5481	365	82.3%	48 min	0.82%	B+
All SkyWest Airlines on DEN–SGF	1,284	78.2%	65 min	0.70%	B+
All carriers on DEN–SGF	1,284	78.2%	65 min	0.70%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5481 quarter by quarter

Quarter by quarter OO 5481 held fairly steady: 83.7% in Jul–Sep 2025, 86.7% in Oct–Dec 2025, 81.8% in Jan–Mar 2026 and 76.9% in Apr–Jun 2026. A spread of 10 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights83.7%
Oct–Dec 202592 flights86.7%
Jan–Mar 202690 flights81.8%
Apr–Jun 202691 flights76.9%

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

By weekday, OO 5481 ranged from 76.0% on Saturday to 86.5% on Wednesday. With about 52 flights behind each day, a spread of 11 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 5481 runs late

One category carries most of the weight here. Carrier accounts for 55% of the 3,037 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%
Late-arriving aircraft
33%
National Airspace System
10%
Extreme weather
3%

The largest share of delay minutes, 55%, 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 1,669 of the 3,037 delay minutes reported here. The split is drawn from 3,037 delay minutes reported on OO 5481.

Cancellations are rare at 0.82%, 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

Badly late arrivals are rare here: only 4.4% 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 637 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 365 flights under OO 5481 in the data flew DEN to SGF. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 5481

For a booking, read OO 5481 as 82.3% on time with 0.82% cancelled over 365 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