Flight number record

OO 5037

SkyWest Airlines · Butte to Denver

Route: BTM → DEN
Departs: 09:47
Flights: 258
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 5037, 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 5037 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 an hour and a half on average. That is a workable record, not a spotless one. That rests on 258 flights, with a median arrival 7 minutes early.

On time

81.3%

Arrivals under 15 minutes late, of 257 completed flights

Avg delay

82 min

Across delayed arrivals only, not all flights

Cancelled

0.39%

National rate is 1.81%

1 hour+ late

7.0%

National rate is 8.1%

These figures cover 258 flights between July 2025 and June 2026. The median arrival is 7 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 5037 flies

OO 5037 flies BTM to DEN without a single fixed slot. Its most common scheduled departure was 09:47, used on 68 of 258 flights, with 10:15 (40 flights) and 10:00 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:4768 flights26.4%
Departs 10:1540 flights15.5%
Departs 10:0040 flights15.5%

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 09:47 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 5037 runs 3 points worse at 81.3%. 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 5037 next to BTM to DEN

Every carrier on BTM to DEN combined arrived on time 81.9% of the time across 365 flights, so OO 5037 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 2 points.

OO 5037 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5037thin sample	258	81.3%	82 min	0.39%	B+
All SkyWest Airlines on BTM–DEN	365	81.9%	84 min	0.27%	B+
All carriers on BTM–DEN	365	81.9%	84 min	0.27%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 5037 quarter by quarter

Quarter by quarter OO 5037 held fairly steady: 85.9% in Oct–Dec 2025, 79.4% in Jan–Mar 2026 and 76.9% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 20256 flights—
Oct–Dec 202592 flights85.9%
Jan–Mar 202669 flights79.4%
Apr–Jun 202691 flights76.9%

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

By weekday, OO 5037 did best on Wednesday at 91.7% on time and worst on Monday at 67.6%. Each day rests on about 37 flights, so a gap of 24 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5037 runs late

One category carries most of the weight here. Carrier accounts for 79% of the 3,953 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
79%
National Airspace System
13%
Late-arriving aircraft
5%
Extreme weather
2%

The largest share of delay minutes, 79%, 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 3,141 of the 3,953 delay minutes reported here. The split is drawn from 3,953 delay minutes reported on OO 5037.

Cancellations are rare at 0.39%, 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

7.0% 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 an hour and a half, which a normal layover absorbs.

The 578 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.

The same number turns up on four other city pairs in the data, including DEC to ORD (49), ORD to DEC (37) and CYS to DEN (21), but none flew often enough under OO 5037 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BTM to DEN only.

One caution: this is a thin sample. 258 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 5037

For a booking, read OO 5037 as 81.3% on time with 0.39% cancelled over 258 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