Flight number record
OO 3746
SkyWest Airlines · Los Angeles to San Diego
- Route
- LAX → SAN
- Departs
- 22:20
- Flights
- 362
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3746, 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 3746 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 9 points better than the national rate of 77.3%. When something does go wrong the average delay runs about an hour. That rests on 362 flights, with a median arrival 11 minutes early.
Set against the rest of the country, OO 3746's record is 9 points better than the US average of 77.3%. That gap is worth roughly 93 fewer late arrivals for every thousand flights.
Key figures
On time
86.6%
Arrivals under 15 minutes late, of 359 completed flights
Avg delay
56 min
Across delayed arrivals only, not all flights
Cancelled
0.83%
National rate is 1.89%
1 hour+ late
2.8%
National rate is 8.3%
These figures cover 362 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 3746 flies
OO 3746 flies LAX to SAN without a single fixed slot. Its most common scheduled departure was 22:20, used on 67 of 362 flights, with 21:59 (54 flights) and 21:55 (38 flights) next.
- Departs 22:2067 flights18.5%
- Departs 21:5954 flights14.9%
- Departs 21:5538 flights10.5%
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 22:20 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 3746 runs 17 points better at 86.6%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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.
Against the route
OO 3746 next to LAX to SAN
Every carrier on LAX to SAN combined arrived on time 83.2% of the time across 2,452 flights, so OO 3746 is 3 points ahead of it. SkyWest flew 2,162 flights on the same city pair under all its flight numbers, including this one, and those ran 83.9% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3746thin sample | 362 | 86.6% | 56 min | 0.83% | A+ |
| All SkyWest Airlines on LAX–SAN | 2,162 | 83.9% | 62 min | 1.06% | B |
| All carriers on LAX–SAN | 2,452 | 83.2% | 60 min | 0.94% | B+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3746 quarter by quarter
OO 3746 did not run the same all year. Its best quarter was Apr–Jun 2026 at 94.5% on time and its weakest Oct–Dec 2025 at 77.0%, a swing of 18 points on roughly 91 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.
- Jul–Sep 202530 flights—
- Oct–Dec 202589 flights77.0%
- Jan–Mar 202690 flights83.3%
- Apr–Jun 202691 flights94.5%
- Jul–Sep 202662 flights88.7%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3746 ranged from 82.0% on Thursday to 92.3% on Tuesday. With about 52 flights behind each day, a spread of 10 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3746 runs when it is late
OO 3746 often beats the schedule: 134 of 359 completed flights, 37%, arrived 15 minutes or more early. The 48 late arrivals split 17 under half an hour, 21 between 30 and 60 minutes, and 10 an hour or more.
- 15+ min early134 flights37.3%
- Within 15 min177 flights49.3%
- 15–29 min late17 flights4.7%
- 30–59 min late21 flights5.8%
- 1–2 hours late7 flights1.9%
- 2+ hours late3 flights0.8%
Scale runs 0% to 100%.
Share of 359 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 32 departures that left 15 minutes late or more, only 2 made it up before arrival. In the other direction, 18 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at SAN.
The worst days
Worst days for OO 3746
The latest arrival of the period was on 28 October 2025, 8 hours 51 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 October 2025 | 8 hours 51 minutes | Extreme weather |
| 2 January 2026 | 2 hours 11 minutes | National Airspace System |
| 4 October 2025 | 2 hours 3 minutes | Carrier |
| 25 August 2026 | 1 hour 58 minutes | Carrier |
| 3 January 2026 | 1 hour 33 minutes | Carrier |
Delay causes
Why OO 3746 runs late
Carrier accounts for 44% of the 2,668 delay minutes carriers reported here, and the remaining four split what is left.
- 44%Carrier
- 39%Extreme weather
- 18%National Airspace System
Extreme weather accounts for 39% 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 quarterly figures above are the more useful view of the risk. The national share is 6%, so this operation carries roughly 6.4 times the usual weather exposure. The split is drawn from 2,668 delay minutes reported on OO 3746.
Cancellations are rare at 0.83%, 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 routes
What a delay on this flight costs
Badly late arrivals are rare here: only 2.8% 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.
Every one of the 362 flights under OO 3746 in the data flew LAX to SAN. 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. 362 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 3746
For a booking, OO 3746 has one of the better records a US domestic flight can show: 86.6% on time and 0.83% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- LAX to SAN, every carrier and departure
- SAN to LAX, the return direction
- SkyWest Airlines 4643 on the same route87.5%
- SkyWest Airlines 4087 on the same route79.5%
- SkyWest Airlines 4001 on the same route79.2%
- SkyWest Airlines 5415 on the same route85.3%
- Los Angeles International (LAX) 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.