Flight number record

OO 4305

SkyWest Airlines · Rhinelander to Minneapolis

Route: RHI → MSP
Departs: 10:59
Flights: 359
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4305, 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 4305 earns an A. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs an hour and a half. That rests on 359 flights, with a median arrival 13 minutes early.

Set against the rest of the country, OO 4305's record is 8 points better than the US average of 77.6%. That gap is worth roughly 78 fewer late arrivals for every thousand flights.

On time

85.4%

Arrivals under 15 minutes late, of 350 completed flights

Avg delay

89 min

Across delayed arrivals only, not all flights

Cancelled

2.51%

National rate is 1.81%

1 hour+ late

7.1%

National rate is 8.1%

These figures cover 359 flights between July 2025 and June 2026. The median arrival is 13 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 4305 flies

OO 4305 flies RHI to MSP without a single fixed slot. Its most common scheduled departure was 10:59, used on 64 of 359 flights, with 10:55 (62 flights) and 10:50 (52 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 10:5964 flights17.8%
Departs 10:5562 flights17.3%
Departs 10:5052 flights14.5%

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 10:59 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 4305 runs level with that at 85.4%. 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 4305 next to RHI to MSP

Every carrier on RHI to MSP combined arrived on time 88.1% of the time across 724 flights, so OO 4305 is 3 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 6 points.

OO 4305 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4305thin sample	359	85.4%	89 min	2.51%	A
All SkyWest Airlines on RHI–MSP	724	88.1%	122 min	2.62%	A
All carriers on RHI–MSP	724	88.1%	122 min	2.62%	A
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4305 quarter by quarter

OO 4305 did not run the same all year. Its best quarter was Apr–Jun 2026 at 92.2% on time and its weakest Jan–Mar 2026 at 78.2%, a swing of 14 points on roughly 90 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202592 flights87.0%
Oct–Dec 202587 flights84.0%
Jan–Mar 202689 flights78.2%
Apr–Jun 202691 flights92.2%

Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4305 ranged from 80.8% on Monday to 90.4% on Tuesday. With about 51 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.

Delay causes

Why OO 4305 runs late

One category carries most of the weight here. Carrier accounts for 56% of the 4,513 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
56%
Extreme weather
39%
National Airspace System
5%

Extreme weather accounts for 39% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 6.3 times the usual weather exposure. The split is drawn from 4,513 delay minutes reported on OO 4305.

Cancellations run at 2.51%, against 1.81% nationally. That is about one flight in 40 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.

Connections and routes

What a delay on this flight costs

7.1% 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.

OO 4305 is not only a RHI to MSP flight. It also flew MSP to RHI (359 flights, 86.8% on time) often enough to be scored on its own. Airlines attach one number to several legs of an aircraft's day, and each leg keeps its own record here, so check which city pair is on your booking before reading a rate.

One caution: this is a thin sample. 359 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.

Other routes flown as OO 4305
Also flown as	Flights	On time	Avg delay	Cancelled	Grade
MSP to RHIthin sample	359	86.8%	76 min	1.95%	A

What to do with this

Booking OO 4305

For a booking, the cancellation rate is the figure to plan around on OO 4305: 2.51% of its 359 scheduled flights did not operate. A late arrival costs an hour and a half, but a cancellation costs the day, so leave a later option open.

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