Carrier route record

MQSBP→PHX

Envoy Air · San Luis Obispo to Phoenix

Flights: 281
Period: July 2025 to June 2026
Share of route: 23%
Carriers: 3

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

Envoy on SBP to PHX 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 12 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 281 flights. The strongest carrier on the route with a full sample, American Airlines, flew 532 at 81.6% on time.

Set against the rest of the country, Envoy's SBP to PHX record is 12 points better than the US average of 77.6%. That gap is worth roughly 120 fewer late arrivals for every thousand flights.

On time

89.6%

Arrivals under 15 minutes late, of 278 completed flights

Avg delay

47 min

Across delayed arrivals only, not all flights

Cancelled

1.07%

National rate is 1.81%

Whole route

82.9%

Every carrier on SBP to PHX, 1,230 flights

These figures cover 281 flights between July 2025 and June 2026. The median arrival is 8 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

Envoy against every carrier on SBP to PHX

Envoy flew 281 of the 1,230 flights on SBP to PHX, about 23% of it. Its 89.6% on time is 7 points better than the route as a whole, which runs 82.9%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from Envoy at 89.6% to SkyWest at 80.1%.

The two carriers here are closely matched: 2 points 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 SBP to PHX
Airline	Flights	On time	Avg delay	Cancelled	Grade
Envoy Air (this page)thin sample	281	89.6%	47 min	1.07%	A
American Airlines	532	81.6%	152 min	0.94%	B+
SkyWest Airlines	417	80.1%	103 min	0.96%	B+

No carrier stands out. American tops the table at 81.6%, 2 points clear of the bottom, which is inside the range this kind of sample moves year to year.

Departure window

When Envoy 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 281 flights.

5am–8am61 flights86.9%
8am–11am96 flights92.5%
11am–2pm52 flights86.5%
2pm–5pm56 flights87.5%
5pm–8pm16 flights—
8pm–5am—

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

The weak window here is the middle of the day, not the evening: 11am–2pm runs 86.5% on time against 92.5% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8am–11am window is the busiest, with 96 flights scheduled in it.

Across the year

Envoy on SBP to PHX through the year

Oct–Dec 2025124 flights86.8%
Jan–Mar 2026143 flights91.6%
Apr–Jun 202614 flights—

Scale runs 80% 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 89.6% on time across 281 flights.

Split by quarter, Envoy on SBP to PHX logged 124 flights in Oct–Dec 2025, 143 flights in Jan–Mar 2026 and 14 flights in Apr–Jun 2026. Fewer than three of those quarters carried the 30 completed flights this site needs before printing a rate, so the 89.6% annual figure is the one to use.

Across the week, Tuesday is the strongest day at 97.4% on time and Sunday the weakest at 83.3%. 14 points is a smaller lever than departure hour, but it is free.

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 1,372 reported delay minutes.

National Airspace System
31%
Late-arriving aircraft
30%
Extreme weather
26%
Carrier
12%
Security
2%

Extreme weather accounts for 26% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 4.1 times the usual weather exposure. The split is drawn from 1,372 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 92.5% on time here.

Cancellations sit at 1.07% against a national 1.81%, which is ordinary. Diversions add another 0.00%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 2.5% 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 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. 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 is a different operation and performs like one: it runs 93.1% on time across 281 flights, 4 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.

One caution: this is a thin sample. 281 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 SBP to PHX

Put together: treat all of this as provisional. 281 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 89.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 278 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