Carrier route record

OOSTL→MSP

SkyWest Airlines · St. Louis to Minneapolis

Flights: 359
Period: July 2025 to June 2026
Share of route: 19%
Carriers: 3

Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on STL to MSP sits in the middle of the pack with a B. Close to three flights in four arrive on time by the DOT's definition, 2 points worse than the national rate of 77.6%. The late ones land close to two hours behind schedule. That rests on 359 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 886 at 84.1% on time.

The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on STL to MSP from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

75.9%

Arrivals under 15 minutes late, of 353 completed flights

Avg delay

106 min

Across delayed arrivals only, not all flights

Cancelled

1.67%

National rate is 1.81%

Whole route

79.8%

Every carrier on STL to MSP, 1,896 flights

These figures cover 359 flights between July 2025 and June 2026. Beyond the headline rate, 13.6% 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.

Carrier by carrier

SkyWest against every carrier on STL to MSP

SkyWest flew 359 of the 1,896 flights on STL to MSP, about 19% of it. Its 75.9% on time is 4 points worse than the route as a whole, which runs 79.8%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 84.1% to SkyWest at 75.9%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 84.1% of the time; Southwest Airlines manages 76.0%. Sample sizes sit next to every figure, because a two-point gap across 651 flights means less than a ten-point one.

On-time performance by carrier on STL to MSP
Airline	Flights	On time	Avg delay	Cancelled	Grade
Delta Air Lines	886	84.1%	90 min	1.13%	B
Southwest Airlines	651	76.0%	53 min	0.31%	B+
SkyWest Airlines (this page)thin sample	359	75.9%	106 min	1.67%	B

Delta leads Southwest by 8 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

Departure window

When SkyWest runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 18 points, against 8 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am33 flights90.6%
11am–2pm106 flights80.8%
2pm–5pm210 flights72.5%
5pm–8pm10 flights—
8pm–5am—

Scale runs 65% to 95%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 90.6% of the time, against 72.5% for the afternoon window. That is 18 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 2pm–5pm window is the busiest, with 210 flights scheduled in it.

Across the year

SkyWest on STL to MSP through the year

Jul–Sep 202546 flights67.4%
Oct–Dec 202528 flights—
Jan–Mar 2026167 flights75.3%
Apr–Jun 2026118 flights79.7%

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

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 75.9% on time across 359 flights.

SkyWest on STL to MSP did not run the same all year. Its best quarter was Apr–Jun 2026 at 79.7% on time and its weakest Jul–Sep 2025 at 67.4%, a swing of 12 points on roughly 120 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.

Across the week, Thursday is the strongest day at 81.8% on time and Monday the weakest at 62.5%. 19 points is a smaller lever than departure hour, but it is free.

Delay causes

Why SkyWest runs late on this route

One category carries most of the weight here. Carrier accounts for 70% of the 9,044 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
70%
Extreme weather
20%
National Airspace System
10%

Extreme weather accounts for 20% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 3.2 times the usual weather exposure. The split is drawn from 9,044 reported delay minutes.

The largest share of delay minutes, 70%, 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 6,301 of the 9,044 delay minutes reported here.

Cancellations sit at 1.67% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 13.6% 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.

At 448 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 8am–11am window matters as much as it does.

The return leg runs 78.2% on time across 359 flights, within 2 points of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.

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.

What to do with this

Booking SkyWest on STL to MSP

Put together: treat all of this as provisional. 359 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 75.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 353 completed flights over 12 months sit behind that.

Where to go next

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