Carrier route record

OOSAN→FAT

SkyWest Airlines · San Diego to Fresno

Flights: 1,235
Period: July 2025 to June 2026
Share of route: 71%
Carriers: 2

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

SkyWest on SAN to FAT lands a B, level with the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 45 minutes on average. That is a workable record, not a spotless one. That rests on 1,235 flights, with a median arrival 6 minutes early.

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

On time

78.3%

Arrivals under 15 minutes late, of 1,209 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

2.02%

National rate is 1.81%

Whole route

78.9%

Every carrier on SAN to FAT, 1,747 flights

These figures cover 1,235 flights between July 2025 and June 2026. The median arrival is 6 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 SAN to FAT

SkyWest flew 1,235 of the 1,747 flights on SAN to FAT, most of the route. Its 78.3% on time is about level with the route as a whole at 78.9%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from Southwest at 80.2% to SkyWest at 78.3%.

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 SAN to FAT
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	512	80.2%	44 min	1.17%	B
SkyWest Airlines (this page)	1,235	78.3%	47 min	2.02%	B

Flight by flight

SkyWest flight numbers on SAN to FAT

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 15 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am—
8am–11am310 flights84.7%
11am–2pm235 flights75.3%
2pm–5pm88 flights70.1%
5pm–8pm277 flights80.2%
8pm–5am325 flights75.0%

Scale runs 60% to 90%. Rows with fewer than 30 flights show a dash.

Book the morning departure. Flights leaving between 8am–11am arrive on time 84.7% of the time, against 70.1% for the afternoon window. That is 15 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8pm–5am window is the busiest, with 325 flights scheduled in it.

Across the year

SkyWest on SAN to FAT through the year

Darker means more delays. Figures are on-time percentages.January best, August worst

August is the worst month at 71.2% on time, 18 points below January, the best at 88.8%. 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. July was the busiest month here, with 123 flights.

Across the week, Tuesday is the strongest day at 87.0% on time and Friday the weakest at 71.1%. 16 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. Late-arriving aircraft accounts for 51% of the 12,000 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.

Late-arriving aircraft
51%
National Airspace System
23%
Carrier
19%
Extreme weather
7%

51% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 12,000 reported delay minutes here, that single category outweighs weather by 8 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 12,422 reported delay minutes.

The practical consequence: the 8am–11am departure is the one that starts clean. Its aircraft has no earlier leg to be late from, which is exactly why that window shows 84.7% on time here.

Cancellations sit at 2.02% against a national 1.81%, which is ordinary. Diversions add another 0.08%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.8% 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.

At 314 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 76.7% on time across 1,235 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.

The sample behind these figures is 1,235 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.

What to do with this

Booking SkyWest on SAN to FAT

Put together: the calendar is the biggest lever here, not the carrier or the hour. January runs 88.8% on time and August 71.2%, a swing of 18 points. If the dates move at all, move them out of August before you think about anything else. 1,209 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