Flight profile · SkyWest Airlines
OO3776
Los Angeles (LAX) to Tucson (TUS) · scheduled 2:45 PM – 3:50 PM
How OO3776 performs
824 operations, September 2023 – July 2026.
OO3776 arrived on time 73.7% of the time, against 81.3% for all LAX → TUS flights, so this departure is 7.6 percentage points worse than the route as a whole. Against SkyWest Airlines’ own flights on this route it is 9.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 824 operations, September 2023 – July 2026 · If OO3776 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
Where OO3776 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 |
|---|---|---|---|---|---|
| OO3776 | 73.7% | 0.00% | -2 min | 10.2% | 824 |
| SkyWest Airlines on LAX → TUS | 83.0% | 0.18% | -7 min | 7.1% | 6,512 |
| All LAX → TUS flights | 81.3% | 0.19% | -6 min | 7.1% | 7,925 |
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
Why OO3776 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for OO3776 on LAX → TUS. 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 OO3776 comes in late, and what that does to the departure.
When the aircraft came in 15 or more minutes late, OO3776 pushed back an average of 57 minutes late; when it came in on time or early, an average of 0 minutes late.
Each departure is matched to the flight the same aircraft flew into LAX just before it, using the tail number in the DOT file, 767 of 824 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 |
|---|---|---|---|
| OO3776 | 22% | 71% | 8% |
| Network, same turn | 18% | 85% | 10% |
The schedule leaves a normal turn: enough time to clean and board if the aircraft is on time, little to spare if it is not.
The network row is every flight with a scheduled turn of 45 to 59 minutes. How often OO3776’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often OO3776 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 LAX late, does that still matter by the time it reaches TUS?
On arrival at TUS, OO3776 spends 3.8 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 about what any arrival at TUS spends on the ground before reaching the gate.
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 TUS. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 28,225 departures from LAX scheduled in the clock hour OO3776 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at TUS (59,301 flights), not just OO3776’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · September 2023 – July 2026
The hour it leaves LAX
Part of any flight’s record belongs to the clock rather than to the flight. OO3776 has one departure time, so this is what that time is worth.
On-time arrival rate. 28,225 departures from LAX are scheduled in the 2 PM–3 PM hour over the period, against 595,153 across the whole day.
OO3776 is scheduled out of LAX at 2:45 PM, in the 2 PM–3 PM bank. Departures from LAX in that hour arrive on time 77.6% of the time against 81.4% across the airport’s whole day — the slot alone is worth 3.8 points worse before anything about this particular flight is considered.
The two airport figures cover every departure from LAX 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 OO3776 run worse on particular days?
Tuesday is historically the most reliable day and Wednesday the least, a gap of 14.6 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 OO3776 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 |
|---|---|---|---|
| TUS→LAX Tucson to Los Angeles | January 8, 2024 – May 6, 2026 | 468 | 73.2% |
| DTW→IAD Detroit to Washington | June 8, 2025 – December 1, 2025 | 165 | 67.3% |
| IAD→DTW Washington to Detroit | June 8, 2025 – December 1, 2025 | 165 | 66.3% |
| SEA→SJC Seattle to San Jose | July 2, 2023 – September 4, 2023 | 55 | — |
| SJC→SEA San Jose to Seattle | July 2, 2023 – September 4, 2023 | 55 | — |
Because the same number has served different journeys, the statistics above describe only the route OO3776 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.
61 min late
against a median of 2 min early
OO3776 has an average that understates its risk: a typical arrival is 2 min early, but the worst tenth are 63 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 824 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 |
|---|---|---|---|---|
| OO3766 | SkyWest Airlines | 89.5% | 6 min early | 1,060 |
| OO3846 | SkyWest Airlines | 75.7% | 5 min early | 921 |
| OO3776 this flight | SkyWest Airlines | 73.7% | 2 min early | 824 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. OO3776 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 824 records of OO3776 operating LAX → TUS, 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
Analysis last recomputed