Carrier route record

OOSJC→PHX

SkyWest Airlines · San Jose to Phoenix

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 SJC to PHX earns a B. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 7 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 269 flights. The strongest carrier on the route with a full sample, American Airlines, flew 685 at 86.1% on time.

Set against the rest of the country, SkyWest's SJC to PHX record is 7 points better than the US average of 77.3%. That gap is worth roughly 69 fewer late arrivals for every thousand flights.

On time

84.2%

Arrivals under 15 minutes late, of 266 completed flights

Avg delay

97 min

Across delayed arrivals only, not all flights

Cancelled

1.12%

National rate is 1.89%

Whole route

80.9%

Every carrier on SJC to PHX, 3,013 flights

These figures cover 269 flights between September 2025 and August 2026. The median arrival is 10 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 SJC to PHX

SkyWest flew 269 of the 3,013 flights on SJC to PHX, about 9% of it. Its 84.2% on time is 3 points better than the route as a whole, which runs 80.9%. Ranked by on-time rate it is number three of four carriers on the route, where the range runs from Envoy at 89.4% to Southwest at 77.7%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.

The choice of carrier is not cosmetic here. American Airlines arrives on time 86.1% of the time; Southwest Airlines manages 77.7%. Sample sizes sit next to every figure, because a two-point gap across 1,869 flights means less than a ten-point one.

On-time performance by carrier on SJC to PHX
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Airthin sample	190	89.4%	52 min	1.05%	A
American Airlines	685	86.1%	90 min	0.88%	A+
SkyWest Airlines (this page)thin sample	269	84.2%	97 min	1.12%	B
Southwest Airlines	1,869	77.7%	49 min	0.64%	B+

American leads Southwest by 8 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 24 points, against 8 points between the best and worst carrier.

5am–8am—
8am–11am33 flights72.7%
11am–2pm72 flights79.2%
2pm–5pm85 flights81.9%
5pm–8pm79 flights96.2%
8pm–5am—

Scale runs 65% to 100%. Rows with fewer than 30 flights show a dash.

The 5pm–8pm window is the strongest at 96.2% on time. The full set of windows spans 24 points.

Across the year

SkyWest on SJC to PHX through the year

Jul–Sep 20252 flights—
Oct–Dec 202552 flights73.1%
Jan–Mar 2026154 flights84.2%
Apr–Jun 202661 flights93.3%

Scale runs 65% to 100%. 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 84.2% on time across 269 flights.

SkyWest on SJC to PHX did not run the same all year. Its best quarter was Apr–Jun 2026 at 93.3% on time and its weakest Oct–Dec 2025 at 73.1%, a swing of 20 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 Saturday the weakest at 78.8%, a spread of 15 points.

Arrival by arrival

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

SkyWest on SJC to PHX often beats the schedule: 78 of 266 completed flights, 29%, arrived 15 minutes or more early. The 42 late arrivals split 9 under half an hour, 13 between 30 and 60 minutes, and 20 an hour or more.

15+ min early78 flights29.3%
Within 15 min146 flights54.9%
15–29 min late9 flights3.4%
30–59 min late13 flights4.9%
1–2 hours late11 flights4.1%
2+ hours late9 flights3.4%

Scale runs 0% to 100%.

Share of 266 completed flights by arrival against schedule.

6 of 44 late departures made up the time and arrived on time, 14% of them. Only 4 left on time and still arrived late.

The worst days

Worst days for SkyWest on SJC to PHX

The latest arrival of the period was on 20 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 three of the five worst days.

The latest arrivals of SkyWest on SJC to PHX in the period
Date	Arrived late by	Largest filed cause
20 May 2026	8 hours 7 minutes	Carrier
10 October 2025	6 hours 37 minutes	Carrier
16 March 2026	6 hours 35 minutes	Late-arriving aircraft
11 October 2025	5 hours 22 minutes	Carrier
14 March 2026	4 hours 6 minutes	Late-arriving aircraft

Delay causes

Why SkyWest runs late on this route

Late-arriving aircraft accounts for 44% of the 4,051 delay minutes carriers reported here, and the remaining four split what is left.

Late-arriving aircraft
44%
Carrier
43%
Extreme weather
9%
National Airspace System
4%

44% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,051 reported delay minutes here, that single category outweighs weather by 5 to one. The split is drawn from 4,051 reported delay minutes.

The largest share of delay minutes, 43%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,749 of the 4,051 delay minutes reported here.

Cancellations sit at 1.12% against a national 1.89%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

7.5% 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 an hour and a half, 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 85.0% 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 SJC to PHX

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 84.2% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 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