Carrier route record

OOMSP→STL

SkyWest Airlines · Minneapolis to St. Louis

Flights: 399
Period: September 2025 to August 2026
Share of route: 20%
Carriers: 3

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

SkyWest on MSP to STL lands a B, about a point worse than the national rate of 77.3%. About one flight in four arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That rests on 399 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 653 at 81.2% on time.

The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on MSP to STL from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

76.3%

Arrivals under 15 minutes late, of 393 completed flights

Avg delay

85 min

Across delayed arrivals only, not all flights

Cancelled

1.25%

National rate is 1.89%

Whole route

79.6%

Every carrier on MSP to STL, 1,958 flights

These figures cover 399 flights between September 2025 and August 2026. Beyond the headline rate, 10.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally.

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Carrier by carrier

SkyWest against every carrier on MSP to STL

SkyWest flew 399 of the 1,958 flights on MSP to STL, about 20% of it. Its 76.3% on time is 3 points worse than the route as a whole, which runs 79.6%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Southwest at 81.2% to SkyWest at 76.3%.

The two carriers here are closely matched: about a point separate the best from the worst. At that spread, schedule and price are better tie-breakers than reliability. Sample sizes are shown so you can see which rows are worth weighing.

On-time performance by carrier on MSP to STL
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	653	81.2%	51 min	0.31%	B+
Delta Air Lines	906	79.9%	63 min	1.10%	B
SkyWest Airlines (this page)	399	76.3%	85 min	1.25%	B

No carrier stands out. Southwest tops the table at 81.2%, about a point clear of the bottom, which is inside the range this kind of sample moves year to year.

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Departure window

When SkyWest runs best on this route

Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 399 flights.

5am–8am33 flights81.2%
8am–11am103 flights78.2%
11am–2pm253 flights75.3%
2pm–5pm10 flights—
5pm–8pm—
8pm–5am—

Scale runs 65% to 85%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 75.3% on time against 81.2% for 5am–8am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 11am–2pm window is the busiest, with 253 flights scheduled in it.

Across the year

SkyWest on MSP to STL through the year

Jul–Sep 202524 flights—
Oct–Dec 202528 flights—
Jan–Mar 2026167 flights75.3%
Apr–Jun 2026118 flights80.5%
Jul–Sep 202662 flights67.7%

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 76.3% on time across 399 flights.

SkyWest on MSP to STL did not run the same all year. Its best quarter was Apr–Jun 2026 at 80.5% on time and its weakest Jul–Sep 2026 at 67.7%, a swing of 13 points on roughly 133 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, Tuesday is the strongest day at 84.6% on time and Sunday the weakest at 68.3%, a spread of 16 points.

Arrival by arrival

How late SkyWest on MSP to STL runs when it is late

The 93 late arrivals split 23 under half an hour, 27 between 30 and 60 minutes, and 43 an hour or more.

15+ min early94 flights23.9%
Within 15 min206 flights52.4%
15–29 min late23 flights5.9%
30–59 min late27 flights6.9%
1–2 hours late25 flights6.4%
2+ hours late18 flights4.6%

Scale runs 0% to 100%.

Share of 393 completed flights by arrival against schedule.

13 of 82 late departures made up the time and arrived on time, 16% of them. In the other direction, 24 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 STL.

The worst days

Worst days for SkyWest on MSP to STL

The latest arrival of the period was on 30 December 2025, 7 hours 11 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. Three of the five worst days fell in March 2026.

The latest arrivals of SkyWest on MSP to STL in the period
Date	Arrived late by	Largest filed cause
30 December 2025	7 hours 11 minutes	National Airspace System
26 March 2026	6 hours 34 minutes	Carrier
17 March 2026	6 hours 11 minutes	Carrier
4 January 2026	5 hours 43 minutes	National Airspace System
22 March 2026	5 hours 27 minutes	Carrier

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 62% of the 7,880 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
62%
Extreme weather
19%
National Airspace System
19%

Extreme weather accounts for 19% 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 7,880 reported delay minutes.

The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 4,859 of the 7,880 delay minutes reported here.

Cancellations sit at 1.25% against a national 1.89%, which is ordinary. Diversions add another 0.25%.

Connections and stage length

What a delay here costs

10.9% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection 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 5am–8am window matters as much as it does.

The return leg runs 74.6% on time across 399 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. 399 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 MSP to STL

Put together: treat all of this as provisional. 399 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 76.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 393 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures