Carrier route record
OOSBP→PHX
SkyWest Airlines · San Luis Obispo to Phoenix
- Flights
- 379
- Period
- September 2025 to August 2026
- Share of route
- 31%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SBP to PHX lands a B+, about a point better than the national rate of 77.3%. Roughly one flight in five arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That rests on 379 flights, with a median arrival 5 minutes early.
The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on SBP to PHX from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
78.1%
Arrivals under 15 minutes late, of 375 completed flights
Avg delay
120 min
Across delayed arrivals only, not all flights
Cancelled
0.79%
National rate is 1.89%
Whole route
81.7%
Every carrier on SBP to PHX, 1,240 flights
These figures cover 379 flights between September 2025 and August 2026. Beyond the headline rate, 10.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
SkyWest against every carrier on SBP to PHX
SkyWest flew 379 of the 1,240 flights on SBP to PHX, about 31% of it. Its 78.1% on time is 4 points worse than the route as a whole, which runs 81.7%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Envoy at 88.7% to SkyWest at 78.1%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Envoy Airthin sample | 330 | 88.7% | 53 min | 0.91% | A+ |
| American Airlines | 531 | 80.0% | 152 min | 1.13% | B |
| SkyWest Airlines (this page) | 379 | 78.1% | 120 min | 0.79% | B+ |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
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 17 points, against half a point between the best and worst carrier.
- 5am–8am73 flights83.1%
- 8am–11am2 flights—
- 11am–2pm49 flights75.5%
- 2pm–5pm68 flights65.7%
- 5pm–8pm187 flights81.7%
- 8pm–5am—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 83.1% of the time, against 65.7% for the afternoon window. That is 17 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5pm–8pm window is the busiest, with 187 flights scheduled in it.
Across the year
SkyWest on SBP to PHX through the year
- Jul–Sep 202526 flights—
- Oct–Dec 202565 flights78.1%
- Jan–Mar 2026106 flights74.3%
- Apr–Jun 2026134 flights84.3%
- Jul–Sep 202648 flights76.6%
Scale runs 65% to 90%. 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 78.1% on time across 379 flights.
SkyWest on SBP to PHX did not run the same all year. Its best quarter was Apr–Jun 2026 at 84.3% on time and its weakest Jan–Mar 2026 at 74.3%, a swing of 10 points on roughly 95 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, Wednesday is the strongest day at 88.2% on time and Sunday the weakest at 72.1%, a spread of 16 points.
Arrival by arrival
How late SkyWest on SBP to PHX runs when it is late
The 82 late arrivals split 25 under half an hour, 19 between 30 and 60 minutes, and 38 an hour or more.
- 15+ min early84 flights22.4%
- Within 15 min209 flights55.7%
- 15–29 min late25 flights6.7%
- 30–59 min late19 flights5.1%
- 1–2 hours late17 flights4.5%
- 2+ hours late21 flights5.6%
Scale runs 0% to 100%.
Share of 375 completed flights by arrival against schedule.
15 of 88 late departures made up the time and arrived on time, 17% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SBP to PHX
The latest arrival of the period was on 24 September 2025, 26 hours 32 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 24 September 2025 | 26 hours 32 minutes | Carrier |
| 1 July 2026 | 15 hours 42 minutes | Carrier |
| 28 March 2026 | 7 hours 24 minutes | Extreme weather |
| 29 December 2025 | 7 hours 7 minutes | Carrier |
| 17 March 2026 | 5 hours 34 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 59% of the 9,872 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 18%Extreme weather
- 16%Late-arriving aircraft
- 6%National Airspace System
- 1%Security
Extreme weather accounts for 18% 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 3.0 times the usual weather exposure. The split is drawn from 9,872 reported delay minutes.
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 5,861 of the 9,872 delay minutes reported here.
Cancellations are rare at 0.79%, 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
10.1% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
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 77.4% on time across 379 flights, within half 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. 379 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 SBP to PHX
Put together: treat all of this as provisional. 379 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 78.1% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 375 completed flights over 12 months sit behind that.
Related
Where to go next
- SBP to PHX, every carrier
- SkyWest on PHX to SBP, the return leg
- Envoy Air on SBP to PHX88.7%
- American Airlines on SBP to PHX80.0%
- SkyWest Airlines network-wide record
- Phoenix Sky Harbor International (PHX) delay statistics
- How often a connection fails at the major US hubs
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.