Carrier route record

OOSTL→MSP

SkyWest Airlines · St. Louis to Minneapolis

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 STL to MSP 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 77.3%. The late ones land an hour and a half behind schedule. That rests on 399 flights. The strongest carrier on the route with a full sample, Delta Air Lines, flew 906 at 85.0% on time.

The US average over the same twelve months is 77.3%, 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

74.6%

Arrivals under 15 minutes late, of 393 completed flights

Avg delay

98 min

Across delayed arrivals only, not all flights

Cancelled

1.50%

National rate is 1.89%

Whole route

79.4%

Every carrier on STL to MSP, 1,962 flights

These figures cover 399 flights between September 2025 and August 2026. Beyond the headline rate, 14.0% 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 STL to MSP

SkyWest flew 399 of the 1,962 flights on STL to MSP, about 20% of it. Its 74.6% on time is 5 points worse than the route as a whole, which runs 79.4%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from Delta at 85.0% to Southwest at 74.5%.

The choice of carrier is not cosmetic here. Delta Air Lines arrives on time 85.0% of the time; Southwest Airlines manages 74.5%. Sample sizes sit next to every figure, because a two-point gap across 657 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	906	85.0%	86 min	1.10%	A
SkyWest Airlines (this page)	399	74.6%	98 min	1.50%	C
Southwest Airlines	657	74.5%	53 min	0.30%	C+

Delta leads Southwest by 11 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

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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 21 points, against 11 points between the best and worst carrier.

5am–8am—
8am–11am33 flights90.6%
11am–2pm103 flights82.2%
2pm–5pm254 flights70.1%
5pm–8pm9 flights—
8pm–5am—

Scale runs 60% 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 70.1% for the afternoon window. That is 21 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 254 flights scheduled in it.

Across the year

SkyWest on STL to MSP through the year

Jul–Sep 202524 flights—
Oct–Dec 202528 flights—
Jan–Mar 2026167 flights75.3%
Apr–Jun 2026118 flights79.7%
Jul–Sep 202662 flights66.1%

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 74.6% on time across 399 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 2026 at 66.1%, a swing of 14 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, Saturday is the strongest day at 77.6% on time and Monday the weakest at 65.6%, a spread of 12 points.

Arrival by arrival

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

SkyWest on STL to MSP often beats the schedule: 121 of 393 completed flights, 31%, arrived 15 minutes or more early. When SkyWest on STL to MSP is late it tends to be very late: 55 of its 100 late arrivals were an hour or more behind, and 19 were two hours or more.

15+ min early121 flights30.8%
Within 15 min172 flights43.8%
15–29 min late21 flights5.3%
30–59 min late24 flights6.1%
1–2 hours late36 flights9.2%
2+ hours late19 flights4.8%

Scale runs 0% to 100%.

Share of 393 completed flights by arrival against schedule.

12 of 100 late departures made up the time and arrived on time, 12% of them. 12 flights left on time and still arrived late.

The worst days

Worst days for SkyWest on STL to MSP

The latest arrival of the period was on 17 May 2026, 8 hours 7 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.

The latest arrivals of SkyWest on STL to MSP in the period
Date	Arrived late by	Largest filed cause
17 May 2026	8 hours 7 minutes	Carrier
30 December 2025	6 hours 49 minutes	National Airspace System
17 March 2026	6 hours 31 minutes	Carrier
26 March 2026	6 hours 13 minutes	Carrier
12 January 2026	5 hours 48 minutes	Carrier

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 67% of the 9,841 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
67%
Extreme weather
23%
National Airspace System
10%

Extreme weather accounts for 23% 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 3.8 times the usual weather exposure. The split is drawn from 9,841 reported delay minutes.

The largest share of delay minutes, 67%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 6,609 of the 9,841 delay minutes reported here.

Cancellations sit at 1.50% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

14.0% 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 8am–11am window matters as much as it does.

The return leg runs 76.3% 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 STL to MSP

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 74.6% 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