Flight profile · SkyWest Airlines
OO3743
San Diego (SAN) to Los Angeles (LAX) · scheduled 6:15 AM – 7:35 AM
How OO3743 performs
1,051 operations, September 2023 – July 2026.
OO3743 arrived on time 95.0% of the time, against 88.5% for all SAN → LAX flights, so this departure is 6.5 percentage points better than the route as a whole. Against SkyWest Airlines’ own flights on this route it is 6.7 points better.
Source: US DOT Bureau of Transportation Statistics · 1,051 operations, September 2023 – July 2026 · If OO3743 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How OO3743 compares to other flight numbers, not just to itself.
This flight stays close to typical even on its worst days, a smaller gap than 99% of 11,788 comparable flight numbers.
A typical arrival is 9 min early, and the worst tenth are only 14 minutes worse than that.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where OO3743 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
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Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| OO3743 | 95.0% | 0.38% | -9 min | 1.3% | 1,051 |
| SkyWest Airlines on SAN → LAX | 88.3% | 0.50% | -9 min | 4.0% | 6,796 |
| All SAN → LAX flights | 88.5% | 0.50% | -9 min | 3.9% | 7,052 |
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
Why OO3743 runs late
Where US DOT attributed the delay minutes on this flight.
weather severe enough to stop this flight specifically
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for OO3743 on SAN → LAX. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Does a late aircraft delay this flight?
How often the plane that flies OO3743 comes in late, and what that does to the departure.
OO3743 is usually the aircraft’s first flight of the day: the schedule gives it a median of 7.4 hours on the ground at SAN, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, OO3743 pushed back an average of 1 minute early; when it came in on time or early, an average of 3 minutes early.
Each departure is matched to the flight the same aircraft flew into SAN just before it, using the tail number in the DOT file, 1,032 of 1,047 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| OO3743 | 15% | 5% | 4% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often OO3743’s aircraft landed 15 or more minutes late is lower than the network’s and, once the aircraft was late, how often OO3743 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
From pushback to gate
When it leaves SAN late, does that still matter by the time it reaches LAX?
OO3743 pushes back an average of 1.7 minutes early and reaches the gate at LAX an average of 5.0 minutes early. The 3.3 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. It spends 30.2 minutes on the taxiways at SAN, 5.7 minutes longer than a typical SAN departure in the same hour.
On arrival at LAX, OO3743 spends 12.1 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 1.4 minutes longer than a typical LAX arrival (10.7 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached LAX. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 26,464 departures from SAN scheduled in the clock hour OO3743 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at LAX (595,170 flights), not just OO3743’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
The hour it leaves SAN
Part of any flight’s record belongs to the clock rather than to the flight. OO3743 has one departure time, so this is what that time is worth.
On-time arrival rate. 26,464 departures from SAN are scheduled in the 6 AM–7 AM hour over the period, against 297,668 across the whole day.
OO3743 is scheduled out of SAN at 6:15 AM, in the 6 AM–7 AM bank. Departures from SAN in that hour arrive on time 92.2% of the time against 77.9% across the airport’s whole day — the slot alone is worth 14.2 points better before anything about this particular flight is considered.
The two airport figures cover every departure from SAN to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Hours below 120 departures are not scored.
By day of week
Does OO3743 run worse on particular days?
Tuesday is historically the most reliable day and Saturday the least, a gap of 4.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026 · Days with fewer than 120 operations are not scored.
Other routes OO3743 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| MSP→SDF Minneapolis to Louisville | November 1–4, 2023 | 4 | — |
| CMH→DTW Columbus to Detroit | August 1–2, 2023 | 2 | — |
| DTW→CMH Detroit to Columbus | August 1–2, 2023 | 2 | — |
| CMH→MSP Columbus to Minneapolis | July 15–29, 2023 | 3 | — |
| MSP→CMH Minneapolis to Columbus | July 15–29, 2023 | 3 | — |
| MSP→MOT Minneapolis to Minot | July 1–8, 2023 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3743 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
5 min late
against a median of 9 min early
Percentiles over 1,051 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering September 2023 – July 2026
Other flights on this route
Same airports, same journey, different odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO3743 this flight | SkyWest Airlines | 95.0% | 9 min early | 1,051 |
| OO4723 | SkyWest Airlines | 92.1% | 9 min early | 929 |
| OO4087 | SkyWest Airlines | 87.7% | 10 min early | 692 |
| OO5249 | SkyWest Airlines | 87.4% | 10 min early | 900 |
| OO5636 | SkyWest Airlines | 87.1% | 6 min early | 865 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. OO3743 is placed in the same ordering rather than left out of it; the rows around it are the most punctual departures on the route, not all of them, so this is a comparison and not a rank. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 1,051 records of OO3743 operating SAN → LAX, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
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