Flight number record

OO 4710

SkyWest Airlines · Bismarck to Denver

Route: BIS → DEN
Departs: 09:00
Flights: 333
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 sits in the middle of the pack with a C+. Close to three flights in four arrive on time by the DOT's definition, 3 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 333 flights, with a median arrival right on schedule.

On time

74.5%

Arrivals under 15 minutes late, of 329 completed flights

Avg delay

112 min

Across delayed arrivals only, not all flights

Cancelled

0.60%

National rate is 1.81%

1 hour+ late

12.8%

National rate is 8.1%

These figures cover 333 flights between July 2025 and June 2026. Beyond the headline rate, 12.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

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 89 of 333 flights, with 09:20 (49 flights) and 09:16 (41 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 09:0089 flights26.7%
Departs 09:2049 flights14.7%
Departs 09:1641 flights12.3%

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 09:00 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 4710 runs 10 points worse at 74.5%. 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 4710 next to BIS to DEN

Every carrier on BIS to DEN combined arrived on time 78.9% of the time across 1,502 flights, so OO 4710 is 4 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 5 points.

OO 4710 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4710thin sample	333	74.5%	112 min	0.60%	C+
All SkyWest Airlines on BIS–DEN	1,502	78.9%	114 min	0.67%	B+
All carriers on BIS–DEN	1,502	78.9%	114 min	0.67%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4710 quarter by quarter

Quarter by quarter OO 4710 held fairly steady: 68.2% in Jul–Sep 2025, 77.3% in Oct–Dec 2025, 74.7% in Jan–Mar 2026 and 78.0% 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 202586 flights68.2%
Oct–Dec 202567 flights77.3%
Jan–Mar 202689 flights74.7%
Apr–Jun 202691 flights78.0%

Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4710 ranged from 70.8% on Sunday to 78.3% on Saturday. With about 48 flights behind each day, a spread of 8 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 4710 runs late

One category carries most of the weight here. Carrier accounts for 85% of the 9,378 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
85%
National Airspace System
6%
Late-arriving aircraft
5%
Extreme weather
4%
Security
0%

The largest share of delay minutes, 85%, 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 7,969 of the 9,378 delay minutes reported here. The split is drawn from 9,378 delay minutes reported on OO 4710.

Cancellations are rare at 0.60%, 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

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 12.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

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. 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 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, OO 4710 is a flight to put a long connection behind. 12.8% of its completed flights arrived an hour or more late, which a short layover will not absorb. If the onward flight is on a separate ticket, the risk sits with you.

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