Flight number record
OO 4710
SkyWest Airlines · Bismarck to Denver
- Route
- BIS → DEN
- Departs
- 09:00
- Flights
- 333
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4710, 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 4710 lands a B+, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 333 flights, with a median arrival 3 minutes early.
Key figures
On time
78.2%
Arrivals under 15 minutes late, of 330 completed flights
Avg delay
107 min
Across delayed arrivals only, not all flights
Cancelled
0.30%
National rate is 1.89%
1 hour+ late
8.8%
National rate is 8.3%
These figures cover 333 flights between September 2025 and August 2026. Beyond the headline rate, 8.8% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When OO 4710 flies
OO 4710 flies BIS to DEN without a single fixed slot. Its most common scheduled departure was 09:00, used on 110 of 333 flights, with 09:16 (82 flights) and 09:08 (38 flights) next.
- Departs 09:00110 flights33.0%
- Departs 09:1682 flights24.6%
- Departs 09:0838 flights11.4%
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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 4710 runs 6 points worse at 78.2%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 4710 next to BIS to DEN
Every carrier on BIS to DEN combined arrived on time 79.9% of the time across 1,433 flights, so OO 4710 is 2 points behind it. Across its whole network SkyWest Airlines managed 78.7%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4710thin sample | 333 | 78.2% | 107 min | 0.30% | B+ |
| All SkyWest Airlines on BIS–DEN | 1,433 | 79.9% | 107 min | 0.70% | B+ |
| All carriers on BIS–DEN | 1,433 | 79.9% | 107 min | 0.70% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4710 quarter by quarter
Quarter by quarter OO 4710 held fairly steady: 77.3% in Oct–Dec 2025, 74.7% in Jan–Mar 2026, 78.0% in Apr–Jun 2026 and 82.3% in Jul–Sep 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202524 flights—
- Oct–Dec 202567 flights77.3%
- Jan–Mar 202689 flights74.7%
- Apr–Jun 202691 flights78.0%
- Jul–Sep 202662 flights82.3%
Scale runs 65% to 90%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4710 did best on Wednesday at 85.1% on time and worst on Thursday at 69.6%. Each day rests on about 48 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4710 runs when it is late
OO 4710 often beats the schedule: 94 of 330 completed flights, 28%, arrived 15 minutes or more early. The 72 late arrivals split 26 under half an hour, 17 between 30 and 60 minutes, and 29 an hour or more.
- 15+ min early94 flights28.5%
- Within 15 min164 flights49.7%
- 15–29 min late26 flights7.9%
- 30–59 min late17 flights5.2%
- 1–2 hours late14 flights4.2%
- 2+ hours late15 flights4.5%
Scale runs 0% to 100%.
Share of 330 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 49 departures that left 15 minutes late or more, only 3 made it up before arrival. In the other direction, 26 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 4710
The latest arrival of the period was on 15 June 2026, 12 hours 53 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 |
|---|---|---|
| 15 June 2026 | 12 hours 53 minutes | Carrier |
| 7 December 2025 | 10 hours 32 minutes | Carrier |
| 8 December 2025 | 9 hours 56 minutes | Carrier |
| 18 January 2026 | 8 hours 35 minutes | Carrier |
| 14 February 2026 | 7 hours 24 minutes | Carrier |
Delay causes
Why OO 4710 runs late
Carrier accounts for 89% of the 7,718 delay minutes carriers reported here, and the remaining four split what is left.
- 89%Carrier
- 6%National Airspace System
- 2%Late-arriving aircraft
- 2%Extreme weather
- 0%Security
The largest share of delay minutes, 89%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 6,836 of the 7,718 delay minutes reported here. The split is drawn from 7,718 delay minutes reported on OO 4710.
Cancellations are rare at 0.30%, 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
8.8% 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 close to two hours, which a normal layover absorbs.
The 516 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 COU to DEN (30), FNT to ORD (1) and CID to ORD (1), but none flew often enough under OO 4710 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to BIS to DEN only.
One caution: this is a thin sample. 333 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 4710
For a booking, read OO 4710 as 78.2% on time with 0.30% cancelled over 333 flights. Those are rates from the past twelve months, not a forecast for any particular day.
Related
Where to go next
- BIS to DEN, every carrier and departure
- DEN to BIS, the return direction
- SkyWest Airlines 4694 on the same route86.6%
- SkyWest Airlines 4738 on the same route88.9%
- 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.