Flight number record
OO 3018
SkyWest Airlines · Salt Lake City to San Diego
- Route
- SLC → SAN
- Departs
- 07:40
- Flights
- 277
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3018, 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 3018 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 45 minutes. That rests on 277 flights, with a median arrival 8 minutes early.
Set against the rest of the country, OO 3018's 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 275 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
1.5%
National rate is 8.3%
These figures cover 277 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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Schedule
When OO 3018 flies
OO 3018 flies SLC to SAN without a single fixed slot. Its most common scheduled departure was 07:40, used on 70 of 277 flights, with 07:14 (52 flights) and 07:08 (47 flights) next.
- Departs 07:4070 flights25.3%
- Departs 07:1452 flights18.8%
- Departs 07:0847 flights17.0%
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 07:40 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3018 runs 3 points better at 92.0%. 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 3018 next to SLC to SAN
Every carrier on SLC to SAN combined arrived on time 80.9% of the time across 3,097 flights, so OO 3018 is 11 points ahead of it. SkyWest flew 815 flights on the same city pair under all its flight numbers, including this one, and those ran 82.2% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 13 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3018thin sample | 277 | 92.0% | 43 min | 0.00% | A+ |
| All SkyWest Airlines on SLC–SAN | 815 | 82.2% | 57 min | 0.86% | B+ |
| All carriers on SLC–SAN | 3,097 | 80.9% | 54 min | 0.90% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3018 quarter by quarter
OO 3018 did not run the same all year. Its best quarter was Jan–Mar 2026 at 97.8% on time and its weakest Jul–Sep 2026 at 87.1%, a swing of 11 points on roughly 69 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.
- Oct–Dec 202563 flights90.2%
- Jan–Mar 202689 flights97.8%
- Apr–Jun 202663 flights90.5%
- Jul–Sep 202662 flights87.1%
Scale runs 80% to 100%.
By weekday, OO 3018 did best on Tuesday at 100.0% on time and worst on Thursday at 86.5%. Each day rests on about 40 flights, so a gap of 14 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 3018 runs when it is late
OO 3018 often beats the schedule: 83 of 275 completed flights, 30%, arrived 15 minutes or more early. The 22 late arrivals split 10 under half an hour, 8 between 30 and 60 minutes, and 4 an hour or more.
- 15+ min early83 flights30.2%
- Within 15 min170 flights61.8%
- 15–29 min late10 flights3.6%
- 30–59 min late8 flights2.9%
- 1–2 hours late3 flights1.1%
- 2+ hours late1 flights0.4%
Scale runs 0% to 100%.
Share of 275 completed flights by arrival against schedule.
A late pushback is often recovered here: of 20 departures that left 15 minutes late or more, 8 still arrived on time. 10 flights left on time and still arrived late.
The worst days
Worst days for OO 3018
The latest arrival of the period was on 9 November 2025, 3 hours 21 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 |
|---|---|---|
| 9 November 2025 | 3 hours 21 minutes | Carrier |
| 19 March 2026 | 1 hour 14 minutes | National Airspace System |
| 2 April 2026 | 1 hour 4 minutes | Carrier |
| 19 April 2026 | 1 hour 3 minutes | Carrier |
| 30 August 2026 | 52 minutes | Carrier |
Delay causes
Why OO 3018 runs late
Carrier accounts for 73% of the 938 delay minutes carriers reported here, and the remaining four split what is left.
- 73%Carrier
- 25%National Airspace System
- 2%Extreme weather
The largest share of delay minutes, 73%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 681 of the 938 delay minutes reported here. The split is drawn from 938 delay minutes reported on OO 3018.
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 1.5% 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 626 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 same number turns up on three other city pairs in the data, including FAT to SAN (27), SAN to FAT (27) and LAS to SAN (1), but none flew often enough under OO 3018 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to SAN only.
One caution: this is a thin sample. 277 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 3018
For a booking, OO 3018 has one of the better records a US domestic flight can show: 92.0% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to SAN, every carrier and departure
- SAN to SLC, the return direction
- Delta Air Lines 1296 on the same route81.0%
- Delta Air Lines 1202 on the same route81.9%
- Delta Air Lines 1177 on the same route92.8%
- Delta Air Lines 1210 on the same route74.8%
- Delta Air Lines 1252 on the same route79.9%
- SkyWest Airlines 3019 on the same route75.2%
- Salt Lake City International (SLC) delay statistics
- San Diego International (SAN) 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
- Worst months to fly in the US, ranked by the data
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.