Carrier route record

MQPHX→SBP

Envoy Air · Phoenix to San Luis Obispo

Flights: 331
Period: September 2025 to August 2026
Share of route: 27%
Carriers: 3

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

Envoy on PHX to SBP 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 77.3%. When something does go wrong the average delay runs about 50 minutes. That rests on 331 flights. The strongest carrier on the route with a full sample, American Airlines, flew 530 at 83.6% on time.

Set against the rest of the country, Envoy's PHX to SBP record is 13 points better than the US average of 77.3%. That gap is worth roughly 129 fewer late arrivals for every thousand flights.

On time

90.2%

Arrivals under 15 minutes late, of 326 completed flights

Avg delay

50 min

Across delayed arrivals only, not all flights

Cancelled

0.91%

National rate is 1.89%

Whole route

83.5%

Every carrier on PHX to SBP, 1,240 flights

These figures cover 331 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

Envoy against every carrier on PHX to SBP

Envoy flew 331 of the 1,240 flights on PHX to SBP, about 27% of it. Its 90.2% on time is 7 points better than the route as a whole, which runs 83.5%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Envoy at 90.2% to SkyWest at 77.4%.

The choice of carrier is not cosmetic here. American Airlines arrives on time 83.6% of the time; SkyWest Airlines manages 77.4%. Sample sizes sit next to every figure, because a two-point gap across 379 flights means less than a ten-point one.

On-time performance by carrier on PHX to SBP
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	331	90.2%	50 min	0.91%	A+
American Airlines	530	83.6%	96 min	0.75%	B+
SkyWest Airlines	379	77.4%	70 min	0.79%	B+

American leads SkyWest by 6 points. Real, but small enough that a better departure time on the weaker carrier can outweigh it.

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Departure window

When Envoy runs best on this route

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 12 points, against 6 points between the best and worst carrier.

5am–8am—
8am–11am96 flights92.5%
11am–2pm52 flights96.2%
2pm–5pm103 flights84.5%
5pm–8pm58 flights94.7%
8pm–5am22 flights—

Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.

The best window here is not the first bank but the 11am–2pm slot at 96.2% on time, ahead of 2pm–5pm at 84.5%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 2pm–5pm window is the busiest, with 103 flights scheduled in it.

Across the year

Envoy on PHX to SBP through the year

Oct–Dec 2025124 flights92.4%
Jan–Mar 2026143 flights93.7%
Apr–Jun 202614 flights—
Jul–Sep 202650 flights74.0%

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 90.2% on time across 331 flights.

Envoy on PHX to SBP did not run the same all year. Its best quarter was Jan–Mar 2026 at 93.7% on time and its weakest Jul–Sep 2026 at 74.0%, a swing of 20 points on roughly 110 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, Tuesday is the strongest day at 96.3% on time and Sunday the weakest at 85.4%, a spread of 11 points.

Arrival by arrival

How late Envoy on PHX to SBP runs when it is late

Envoy on PHX to SBP often beats the schedule: 112 of 326 completed flights, 34%, arrived 15 minutes or more early. The 32 late arrivals split 14 under half an hour, 8 between 30 and 60 minutes, and 10 an hour or more.

15+ min early112 flights34.4%
Within 15 min182 flights55.8%
15–29 min late14 flights4.3%
30–59 min late8 flights2.5%
1–2 hours late8 flights2.5%
2+ hours late2 flights0.6%

Scale runs 0% to 100%.

Share of 326 completed flights by arrival against schedule.

A late pushback is often recovered here: of 36 departures that left 15 minutes late or more, 13 still arrived on time. 9 flights left on time and still arrived late.

The worst days

Worst days for Envoy on PHX to SBP

The latest arrival of the period was on 28 July 2026, 2 hours 16 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. Three of the five worst days fell in August 2026.

The latest arrivals of Envoy on PHX to SBP in the period
Date	Arrived late by	Largest filed cause
28 July 2026	2 hours 16 minutes	Late-arriving aircraft
3 August 2026	2 hours 14 minutes	Late-arriving aircraft
9 August 2026	1 hour 46 minutes	Late-arriving aircraft
13 January 2026	1 hour 35 minutes	Carrier
15 August 2026	1 hour 35 minutes	Carrier

Delay causes

Why Envoy runs late on this route

Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 1,586 reported delay minutes.

Late-arriving aircraft
40%
Carrier
35%
National Airspace System
25%

40% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 1,586 reported delay minutes here, that single category outweighs weather by 40 to one. The split is drawn from 1,586 reported delay minutes.

The largest share of delay minutes, 35%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 554 of the 1,586 delay minutes reported here.

Cancellations sit at 0.91% against a national 1.89%, which is ordinary. Diversions add another 0.60%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 3.1% land an hour or more behind schedule, against 8.3% 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 509 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 88.7% on time across 330 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. 331 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 Envoy on PHX to SBP

Put together: treat all of this as provisional. 331 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. 326 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