Flight number record
OO 5037
SkyWest Airlines · Butte to Denver
- Route
- BTM → DEN
- Departs
- 10:15
- Flights
- 299
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 299 flights, with a median arrival 7 minutes early.
Key figures
On time
80.8%
Arrivals under 15 minutes late, of 297 completed flights
Avg delay
81 min
Across delayed arrivals only, not all flights
Cancelled
0.33%
National rate is 1.89%
1 hour+ late
7.4%
National rate is 8.3%
These figures cover 299 flights between September 2025 and August 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 5037 flies
OO 5037 flies BTM to DEN without a single fixed slot. Its most common scheduled departure was 10:15, used on 75 of 299 flights, with 09:47 (68 flights) and 10:00 (40 flights) next.
- Departs 10:1575 flights25.1%
- Departs 09:4768 flights22.7%
- Departs 10:0040 flights13.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 10:15 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 5037 runs 3 points worse at 80.8%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 5037 next to BTM to DEN
Every carrier on BTM to DEN combined arrived on time 82.0% of the time across 365 flights, so OO 5037 is about level with it. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 2 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5037thin sample | 299 | 80.8% | 81 min | 0.33% | B+ |
| All SkyWest Airlines on BTM–DEN | 365 | 82.0% | 83 min | 0.55% | B+ |
| All carriers on BTM–DEN | 365 | 82.0% | 83 min | 0.55% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | 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, 76.9% in Apr–Jun 2026 and 77.5% in Jul–Sep 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%
- Jul–Sep 202641 flights77.5%
Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 5037 did best on Wednesday at 90.5% on time and worst on Monday at 65.1%. Each day rests on about 43 flights, so a gap of 25 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5037 runs when it is late
OO 5037 often beats the schedule: 96 of 297 completed flights, 32%, arrived 15 minutes or more early. The 57 late arrivals split 16 under half an hour, 19 between 30 and 60 minutes, and 22 an hour or more.
- 15+ min early96 flights32.3%
- Within 15 min144 flights48.5%
- 15–29 min late16 flights5.4%
- 30–59 min late19 flights6.4%
- 1–2 hours late12 flights4.0%
- 2+ hours late10 flights3.4%
Scale runs 0% to 100%.
Share of 297 completed flights by arrival against schedule.
10 of 49 late departures made up the time and arrived on time, 20% of them. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DEN.
The worst days
Worst days for OO 5037
The latest arrival of the period was on 20 June 2026, 7 hours 29 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 20 June 2026 | 7 hours 29 minutes | Carrier |
| 19 March 2026 | 5 hours 40 minutes | Carrier |
| 24 January 2026 | 4 hours 49 minutes | Carrier |
| 19 May 2026 | 4 hours 47 minutes | Carrier |
| 24 July 2026 | 3 hours 37 minutes | Carrier |
Delay causes
Why OO 5037 runs late
Carrier accounts for 80% of the 4,623 delay minutes carriers reported here, and the remaining four split what is left.
- 80%Carrier
- 12%National Airspace System
- 6%Late-arriving aircraft
- 2%Extreme weather
The largest share of delay minutes, 80%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,698 of the 4,623 delay minutes reported here. The split is drawn from 4,623 delay minutes reported on OO 5037.
Cancellations are rare at 0.33%, below the national 1.89% 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
7.4% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, 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.
The same number turns up on three other city pairs in the data, including ORD to DEC (24), CYS to DEN (21) and ORD to JST (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. 299 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 80.8% on time with 0.33% cancelled over 299 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- Denver International (DEN) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- Worst months to fly in the US, ranked by the data
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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.