Flight number record

OO 4238

SkyWest Airlines · Aberdeen to Minneapolis

Route: ABR → MSP
Departs: 06:30
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4238, 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 4238 earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 11 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 3.5 hours. That rests on 365 flights, with a median arrival 17 minutes early.

Set against the rest of the country, OO 4238's record is 11 points better than the US average of 77.6%. That gap is worth roughly 108 fewer late arrivals for every thousand flights.

On time

88.4%

Arrivals under 15 minutes late, of 362 completed flights

Avg delay

208 min

Across delayed arrivals only, not all flights

Cancelled

0.82%

National rate is 1.81%

1 hour+ late

8.3%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. Beyond the headline rate, 8.3% 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 4238 flies

OO 4238 flies ABR to MSP without a single fixed slot. Its most common scheduled departure was 06:30, used on 189 of 365 flights, with 06:25 (56 flights) and 06:34 (50 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 06:30189 flights51.8%
Departs 06:2556 flights15.3%
Departs 06:3450 flights13.7%

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 06:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4238 runs level with that at 88.4%. 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 4238 next to ABR to MSP

Every carrier on ABR to MSP combined arrived on time 89.6% of the time across 754 flights, so OO 4238 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 9 points.

OO 4238 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4238	365	88.4%	208 min	0.82%	A+
All SkyWest Airlines on ABR–MSP	754	89.6%	179 min	1.46%	A
All carriers on ABR–MSP	754	89.6%	179 min	1.46%	A
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4238 quarter by quarter

Quarter by quarter OO 4238 held fairly steady: 88.0% in Jul–Sep 2025, 89.0% in Oct–Dec 2025, 87.6% in Jan–Mar 2026 and 88.9% in Apr–Jun 2026. A spread of about a point is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights88.0%
Oct–Dec 202592 flights89.0%
Jan–Mar 202690 flights87.6%
Apr–Jun 202691 flights88.9%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4238 ranged from 84.6% on Friday to 94.3% on Tuesday. With about 52 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 4238 runs late

One category carries most of the weight here. Carrier accounts for 80% of the 8,730 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
80%
Extreme weather
16%
National Airspace System
2%
Security
2%

Extreme weather accounts for 16% 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 2.5 times the usual weather exposure. The split is drawn from 8,730 delay minutes reported on OO 4238.

Cancellations are rare at 0.82%, 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

8.3% 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 about 3.5 hours, which a normal layover absorbs.

Every one of the 365 flights under OO 4238 in the data flew ABR to MSP. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 365 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 4238

For a booking, OO 4238 has one of the better records a US domestic flight can show: 88.4% on time and 0.82% cancelled. That is a base rate, not a promise about any single 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