Carrier route record

OOPHX→SJC

SkyWest Airlines · Phoenix to San Jose

Flights: 269
Period: September 2025 to August 2026
Share of route: 9%
Carriers: 4

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

SkyWest on PHX to SJC earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 269 flights. The strongest carrier on the route with a full sample, Southwest Airlines, flew 1,837 at 76.9% on time.

Set against the rest of the country, SkyWest's PHX to SJC record is 8 points better than the US average of 77.3%. That gap is worth roughly 77 fewer late arrivals for every thousand flights.

On time

85.0%

Arrivals under 15 minutes late, of 266 completed flights

Avg delay

74 min

Across delayed arrivals only, not all flights

Cancelled

0.74%

National rate is 1.89%

Whole route

78.2%

Every carrier on PHX to SJC, 2,979 flights

These figures cover 269 flights between September 2025 and August 2026. The median arrival is 11 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.

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Carrier by carrier

SkyWest against every carrier on PHX to SJC

SkyWest flew 269 of the 2,979 flights on PHX to SJC, about 9% of it. Its 85.0% on time is 7 points better than the route as a whole, which runs 78.2%. Ranked by on-time rate it is number two of four carriers on the route, where the range runs from Envoy at 87.3% to American at 76.6%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The two carriers here are closely matched: half 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 PHX to SJC
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	190	87.3%	45 min	0.53%	A+
SkyWest Airlines (this page)thin sample	269	85.0%	74 min	0.74%	A+
Southwest Airlines	1,837	76.9%	48 min	0.38%	B+
American Airlines	683	76.6%	74 min	0.88%	B+

No carrier stands out. Southwest tops the table at 76.9%, half 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 269 flights.

5am–8am25 flights—
8am–11am39 flights79.5%
11am–2pm102 flights85.0%
2pm–5pm66 flights84.8%
5pm–8pm37 flights86.5%
8pm–5am—

Scale runs 70% to 90%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is the strongest at 86.5% on time. The full set of windows spans 7 points.

Across the year

SkyWest on PHX to SJC through the year

Jul–Sep 20252 flights—
Oct–Dec 202552 flights86.3%
Jan–Mar 2026154 flights81.7%
Apr–Jun 202661 flights91.7%

Scale runs 75% to 95%. 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 85.0% on time across 269 flights.

SkyWest on PHX to SJC did not run the same all year. Its best quarter was Apr–Jun 2026 at 91.7% on time and its weakest Jan–Mar 2026 at 81.7%, a swing of 10 points on roughly 90 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 93.3% on time and Friday the weakest at 79.5%, a spread of 14 points.

Arrival by arrival

How late SkyWest on PHX to SJC runs when it is late

SkyWest on PHX to SJC often beats the schedule: 105 of 266 completed flights, 39%, arrived 15 minutes or more early. The 40 late arrivals split 13 under half an hour, 8 between 30 and 60 minutes, and 19 an hour or more.

15+ min early105 flights39.5%
Within 15 min121 flights45.5%
15–29 min late13 flights4.9%
30–59 min late8 flights3.0%
1–2 hours late14 flights5.3%
2+ hours late5 flights1.9%

Scale runs 0% to 100%.

Share of 266 completed flights by arrival against schedule.

15 of 51 late departures made up the time and arrived on time, 29% of them. Only 4 left on time and still arrived late.

The worst days

Worst days for SkyWest on PHX to SJC

The latest arrival of the period was on 16 March 2026, 6 hours 41 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).

The latest arrivals of SkyWest on PHX to SJC in the period
Date	Arrived late by	Largest filed cause
16 March 2026	6 hours 41 minutes	Late-arriving aircraft
14 March 2026	4 hours 19 minutes	Late-arriving aircraft
25 February 2026	3 hours 56 minutes	Carrier
18 February 2026	3 hours 39 minutes	Carrier
17 April 2026	2 hours 29 minutes	Carrier

Delay causes

Why SkyWest runs late on this route

Late-arriving aircraft accounts for 46% of the 2,956 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
46%
Carrier
46%
National Airspace System
5%
Extreme weather
4%

46% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 2,956 reported delay minutes here, that single category outweighs weather by 12 to one. The split is drawn from 2,956 reported delay minutes.

The largest share of delay minutes, 46%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,346 of the 2,956 delay minutes reported here.

Cancellations are rare at 0.74%, below the national 1.89% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

Connections and stage length

What a delay here costs

7.1% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.

The 621 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.

The return leg runs 84.2% on time across 269 flights, within about a point 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. 269 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 PHX to SJC

Put together: treat all of this as provisional. 269 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 85.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 266 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