Flight number record
OO 4030
SkyWest Airlines · Palm Springs to Salt Lake City
- Route
- PSP → SLC
- Departs
- 06:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4030, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.
OO 4030 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 21 points better than the national rate of 77.3%. When something does go wrong the average delay runs about 2.9 hours. That rests on 365 flights, with a median arrival 19 minutes early.
Set against the rest of the country, OO 4030's record is 21 points better than the US average of 77.3%. That gap is worth roughly 211 fewer late arrivals for every thousand flights.
Key figures
On time
98.4%
Arrivals under 15 minutes late, of 365 completed flights
Avg delay
173 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
0.8%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 19 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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Schedule
When OO 4030 flies
OO 4030 flies PSP to SLC without a single fixed slot. Its most common scheduled departure was 06:00, used on 189 of 365 flights, with 06:06 (56 flights) and 06:05 (55 flights) next.
- Departs 06:00189 flights51.8%
- Departs 06:0656 flights15.3%
- Departs 06:0555 flights15.1%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4030 runs 9 points better at 98.4%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
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Against the route
OO 4030 next to PSP to SLC
Every carrier on PSP to SLC combined arrived on time 92.3% of the time across 1,080 flights, so OO 4030 is 6 points ahead of it. SkyWest flew 1,009 flights on the same city pair under all its flight numbers, including this one, and those ran 93.2% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 20 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4030 | 365 | 98.4% | 173 min | 0.00% | A+ |
| All SkyWest Airlines on PSP–SLC | 1,009 | 93.2% | 107 min | 0.40% | A+ |
| All carriers on PSP–SLC | 1,080 | 92.3% | 113 min | 0.37% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4030 quarter by quarter
Quarter by quarter OO 4030 held fairly steady: 100.0% in Jul–Sep 2025, 100.0% in Oct–Dec 2025, 95.6% in Jan–Mar 2026, 98.9% in Apr–Jun 2026 and 98.4% in Jul–Sep 2026. A spread of 4 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202530 flights100.0%
- Oct–Dec 202592 flights100.0%
- Jan–Mar 202690 flights95.6%
- Apr–Jun 202691 flights98.9%
- Jul–Sep 202662 flights98.4%
Scale runs 85% to 100%.
By weekday, OO 4030 ranged from 96.2% on Saturday to 100.0% on Monday. With about 52 flights behind each day, a spread of 4 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 4030 runs when it is late
OO 4030 often beats the schedule: 277 of 365 completed flights, 76%, arrived 15 minutes or more early. Most of the lateness is short. 3 of the 6 late arrivals were under half an hour behind, and 3 reached an hour or more.
- 15+ min early277 flights75.9%
- Within 15 min82 flights22.5%
- 15–29 min late3 flights0.8%
- 30–59 min late0 flights0.0%
- 1–2 hours late0 flights0.0%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 365 completed flights by arrival against schedule.
Only 10 of 365 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 4030
The latest arrival of the period was on 19 February 2026, 6 hours 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). Three of the five worst days fell in February 2026.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 19 February 2026 | 6 hours 33 minutes | Carrier |
| 30 July 2026 | 5 hours 55 minutes | Carrier |
| 24 February 2026 | 3 hours 43 minutes | Carrier |
| 9 January 2026 | 29 minutes | Carrier |
| 14 February 2026 | 22 minutes | Carrier |
Delay causes
Why OO 4030 runs late
Carrier accounts for 100% of the 1,038 delay minutes carriers reported here, and the remaining four split what is left.
- 100%Carrier
The largest share of delay minutes, 100%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,038 of the 1,038 delay minutes reported here. The split is drawn from 1,038 delay minutes reported on OO 4030.
Cancellations are rare at 0.00%, below the national 1.89% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.
Connections and routes
What a delay on this flight costs
Badly late arrivals are rare here: only 0.8% 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 541 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.
Every one of the 365 flights under OO 4030 in the data flew PSP to SLC. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 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 OO 4030
For a booking, OO 4030 has one of the better records a US domestic flight can show: 98.4% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- PSP to SLC, every carrier and departure
- SLC to PSP, the return direction
- Salt Lake City International (SLC) delay statistics
- SkyWest Airlines on-time record
- Every SkyWest Airlines flight number with a record
- The most and least reliable flight numbers in the US
- How to read this site: grades, sample sizes, and honest caveats
A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
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.