Carrier route record
OOSLC→OAK
SkyWest Airlines · Salt Lake City to Oakland
- Flights
- 1,074
- Period
- September 2025 to August 2026
- Share of route
- 66%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SLC to OAK 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 roughly 55 minutes. That rests on 1,074 flights, with a median arrival 8 minutes early.
Set against the rest of the country, SkyWest's SLC to OAK record is 15 points better than the US average of 77.3%. That gap is worth roughly 145 fewer late arrivals for every thousand flights.
Key figures
On time
91.8%
Arrivals under 15 minutes late, of 1,071 completed flights
Avg delay
54 min
Across delayed arrivals only, not all flights
Cancelled
0.19%
National rate is 1.89%
Whole route
90.2%
Every carrier on SLC to OAK, 1,621 flights
These figures cover 1,074 flights between September 2025 and August 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.
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Carrier by carrier
SkyWest against every carrier on SLC to OAK
SkyWest flew 1,074 of the 1,621 flights on SLC to OAK, most of the route. Its 91.8% on time is 2 points better than the route as a whole, which runs 90.2%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 91.8% to Southwest at 87.0%.
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) | 1,074 | 91.8% | 54 min | 0.19% | A+ |
| Southwest Airlines | 547 | 87.0% | 57 min | 0.18% | A+ |
Flight by flight
SkyWest flight numbers on SLC to OAK
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Departure window
When SkyWest 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 1,074 flights.
- 5am–8am—
- 8am–11am331 flights92.1%
- 11am–2pm34 flights97.1%
- 2pm–5pm344 flights90.4%
- 5pm–8pm1 flights—
- 8pm–5am364 flights92.3%
Scale runs 80% 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 97.1% on time, ahead of 2pm–5pm at 90.4%. 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 8pm–5am window is the busiest, with 364 flights scheduled in it.
Across the year
SkyWest on SLC to OAK through the year
February is the weak month at 82.1% on time, against 96.7% in September. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. May was the busiest month here, with 93 flights.
Across the week, Tuesday is the strongest day at 96.2% on time and Sunday the weakest at 89.4%, a spread of 7 points.
Arrival by arrival
How late SkyWest on SLC to OAK runs when it is late
SkyWest on SLC to OAK often beats the schedule: 318 of 1,071 completed flights, 30%, arrived 15 minutes or more early. The 88 late arrivals split 40 under half an hour, 20 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early318 flights29.7%
- Within 15 min665 flights62.1%
- 15–29 min late40 flights3.7%
- 30–59 min late20 flights1.9%
- 1–2 hours late21 flights2.0%
- 2+ hours late7 flights0.7%
Scale runs 0% to 100%.
Share of 1,071 completed flights by arrival against schedule.
13 of 84 late departures made up the time and arrived on time, 15% of them. Only 17 left on time and still arrived late.
The worst days
Worst days for SkyWest on SLC to OAK
The latest arrival of the period was on 23 January 2026, 7 hours 20 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 |
|---|---|---|
| 23 January 2026 | 7 hours 20 minutes | Carrier |
| 25 January 2026 | 3 hours 55 minutes | Carrier |
| 18 February 2026 | 3 hours 5 minutes | Extreme weather |
| 6 April 2026 | 2 hours 25 minutes | Carrier |
| 3 June 2026 | 2 hours 9 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 78% of the 4,719 delay minutes carriers reported here, and the remaining four split what is left.
- 78%Carrier
- 16%Extreme weather
- 6%National Airspace System
- 0%Security
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 4,719 reported delay minutes.
The largest share of delay minutes, 78%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 3,676 of the 4,719 delay minutes reported here.
Cancellations are rare at 0.19%, 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 2.6% 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 588 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 1,074 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. 1,074 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 OAK
Put together: treat all of this as provisional. 1,074 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 91.8% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 1,071 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to OAK, every carrier
- SkyWest on OAK to SLC, the return leg
- Southwest Airlines on SLC to OAK87.0%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- Oakland International (OAK) delay statistics
- Worst months to fly in the US, ranked by the data
- Late aircraft, weather, or the airline: what actually causes US flight delays
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.