Carrier route record

OOFAT→DEN

SkyWest Airlines · Fresno to Denver

Flights: 747
Period: July 2025 to June 2026
Share of route: 52%
Carriers: 3

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

SkyWest on FAT to DEN 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 13 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 747 flights, with a median arrival 12 minutes early.

Set against the rest of the country, SkyWest's FAT to DEN record is 13 points better than the US average of 77.6%. That gap is worth roughly 126 fewer late arrivals for every thousand flights.

On time

90.2%

Arrivals under 15 minutes late, of 746 completed flights

Avg delay

72 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

Whole route

87.8%

Every carrier on FAT to DEN, 1,450 flights

These figures cover 747 flights between July 2025 and June 2026. The median arrival is 12 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.

Carrier by carrier

SkyWest against every carrier on FAT to DEN

SkyWest flew 747 of the 1,450 flights on FAT to DEN, most of the route. Its 90.2% on time is 2 points better than the route as a whole, which runs 87.8%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 93.3% to Southwest at 77.7%. Two of those carriers flew fewer than 365 flights here, so treat their positions as rough.

Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.

On-time performance by carrier on FAT to DEN
Airline	Flights	On time	Avg delay	Cancelled	Grade
United Airlinesthin sample	344	93.3%	86 min	0.29%	A+
SkyWest Airlines (this page)	747	90.2%	72 min	0.00%	A+
Southwest Airlinesthin sample	359	77.7%	63 min	0.00%	B+

Flight by flight

SkyWest flight numbers on FAT to DEN

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 747 flights.

5am–8am20 flights—
8am–11am364 flights91.8%
11am–2pm363 flights88.4%
2pm–5pm—
5pm–8pm—
8pm–5am—

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

The 8am–11am window is the strongest at 91.8% on time. The full set of windows spans 3 points.

Across the year

SkyWest on FAT to DEN through the year

Darker means more delays. Figures are on-time percentages.October best, March worst

August is the worst month at 80.6% on time, 18 points below October, the best at 98.4%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. December was the busiest month here, with 74 flights.

Across the week, Saturday is the strongest day at 93.5% on time and Sunday the weakest at 87.9%. 6 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 58% of the 5,226 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
58%
Late-arriving aircraft
18%
National Airspace System
17%
Extreme weather
7%
Security
0%

The largest share of delay minutes, 58%, 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 3,052 of the 5,226 delay minutes reported here. The split is drawn from 5,226 reported delay minutes.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.2% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.

The 844 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

The return leg runs 87.3% on time across 749 flights, within 3 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. 747 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 FAT to DEN

Put together: treat all of this as provisional. 747 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 90.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 746 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