Carrier route record
OOSLC→SJC
SkyWest Airlines · Salt Lake City to San Jose
- Flights
- 664
- Period
- September 2025 to August 2026
- Share of route
- 37%
- Carriers
- 3
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SLC to SJC 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 15 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 664 flights, with a median arrival 11 minutes early.
Set against the rest of the country, SkyWest's SLC to SJC record is 15 points better than the US average of 77.3%. That gap is worth roughly 147 fewer late arrivals for every thousand flights.
Key figures
On time
92.0%
Arrivals under 15 minutes late, of 663 completed flights
Avg delay
75 min
Across delayed arrivals only, not all flights
Cancelled
0.15%
National rate is 1.89%
Whole route
86.7%
Every carrier on SLC to SJC, 1,796 flights
These figures cover 664 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 SLC to SJC
SkyWest flew 664 of the 1,796 flights on SLC to SJC, about 37% of it. Its 92.0% on time is 5 points better than the route as a whole, which runs 86.7%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 92.0% to Southwest at 74.3%. 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 |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 664 | 92.0% | 75 min | 0.15% | A+ |
| Delta Air Lines | 924 | 85.7% | 70 min | 0.43% | A+ |
| Southwest Airlinesthin sample | 208 | 74.3% | 44 min | 0.96% | C+ |
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 12 points, against half a point between the best and worst carrier.
- 5am–8am107 flights93.5%
- 8am–11am208 flights96.1%
- 11am–2pm—
- 2pm–5pm200 flights93.0%
- 5pm–8pm149 flights83.9%
- 8pm–5am—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 96.1% of the time, against 83.9% for the evening window. That is 12 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 208 flights scheduled in it.
Across the year
SkyWest on SLC to SJC through the year
July is the worst month at 84.5% on time, 12 points below December, the best at 96.7%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. October was the busiest month here, with 85 flights.
Across the week, Tuesday is the strongest day at 96.9% on time and Friday the weakest at 88.1%, a spread of 9 points.
Arrival by arrival
How late SkyWest on SLC to SJC runs when it is late
SkyWest on SLC to SJC often beats the schedule: 243 of 663 completed flights, 37%, arrived 15 minutes or more early. The 53 late arrivals split 20 under half an hour, 10 between 30 and 60 minutes, and 23 an hour or more.
- 15+ min early243 flights36.7%
- Within 15 min367 flights55.4%
- 15–29 min late20 flights3.0%
- 30–59 min late10 flights1.5%
- 1–2 hours late11 flights1.7%
- 2+ hours late12 flights1.8%
Scale runs 0% to 100%.
Share of 663 completed flights by arrival against schedule.
A late pushback is often recovered here: of 64 departures that left 15 minutes late or more, 22 still arrived on time. Only 11 left on time and still arrived late.
The worst days
Worst days for SkyWest on SLC to SJC
The latest arrival of the period was on 18 August 2026, 4 hours 46 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 |
|---|---|---|
| 18 August 2026 | 4 hours 46 minutes | Carrier |
| 15 July 2026 | 4 hours | Carrier |
| 18 February 2026 | 3 hours 52 minutes | Extreme weather |
| 16 July 2026 | 3 hours 25 minutes | Carrier |
| 1 June 2026 | 3 hours 3 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 79% of the 3,963 delay minutes carriers reported here, and the remaining four split what is left.
- 79%Carrier
- 16%Extreme weather
- 5%National Airspace System
Extreme weather accounts for 16% 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 2.7 times the usual weather exposure. The split is drawn from 3,963 reported delay minutes.
The largest share of delay minutes, 79%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,139 of the 3,963 delay minutes reported here.
Cancellations are rare at 0.15%, 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
Badly late arrivals are rare here: only 3.5% 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 584 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 94.1% on time across 662 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. 664 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 SLC to SJC
Put together: treat all of this as provisional. 664 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 92.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 663 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to SJC, every carrier
- SkyWest on SJC to SLC, the return leg
- Delta Air Lines on SLC to SJC85.7%
- Southwest Airlines on SLC to SJC74.3%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Norman Y. Mineta San Jose International (SJC) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
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.