Flight number record
OO 3502
SkyWest Airlines · Tucson to Los Angeles
- Route
- TUS → LAX
- Departs
- 06:20
- Flights
- 273
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3502, 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 3502 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 17 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 273 flights, with a median arrival 15 minutes early.
Set against the rest of the country, OO 3502's record is 17 points better than the US average of 77.3%. That gap is worth roughly 168 fewer late arrivals for every thousand flights.
Key figures
On time
94.1%
Arrivals under 15 minutes late, of 273 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
2.2%
National rate is 8.3%
These figures cover 273 flights between September 2025 and August 2026. The median arrival is 15 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 3502 flies
OO 3502 flies TUS to LAX without a single fixed slot. Its most common scheduled departure was 06:20, used on 49 of 273 flights, with 08:15 (38 flights) and 06:00 (36 flights) next.
- Departs 06:2049 flights17.9%
- Departs 08:1538 flights13.9%
- Departs 06:0036 flights13.2%
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 06:20 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 3502 runs 5 points better at 94.1%. 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 3502 next to TUS to LAX
Every carrier on TUS to LAX combined arrived on time 86.4% of the time across 2,607 flights, so OO 3502 is 8 points ahead of it. SkyWest flew 2,128 flights on the same city pair under all its flight numbers, including this one, and those ran 87.1% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 15 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3502thin sample | 273 | 94.1% | 98 min | 0.00% | A+ |
| All SkyWest Airlines on TUS–LAX | 2,128 | 87.1% | 81 min | 0.42% | A+ |
| All carriers on TUS–LAX | 2,607 | 86.4% | 74 min | 0.42% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3502 quarter by quarter
Quarter by quarter OO 3502 held fairly steady: 90.0% in Oct–Dec 2025, 91.1% in Jan–Mar 2026, 96.7% in Apr–Jun 2026 and 96.8% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202530 flights90.0%
- Jan–Mar 202690 flights91.1%
- Apr–Jun 202691 flights96.7%
- Jul–Sep 202662 flights96.8%
Scale runs 80% to 100%.
By weekday, OO 3502 ranged from 87.2% on Monday to 97.4% on Friday. With about 39 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 3502 runs when it is late
OO 3502 often beats the schedule: 139 of 273 completed flights, 51%, arrived 15 minutes or more early. The 16 late arrivals split 5 under half an hour, 5 between 30 and 60 minutes, and 6 an hour or more.
- 15+ min early139 flights50.9%
- Within 15 min118 flights43.2%
- 15–29 min late5 flights1.8%
- 30–59 min late5 flights1.8%
- 1–2 hours late2 flights0.7%
- 2+ hours late4 flights1.5%
Scale runs 0% to 100%.
Share of 273 completed flights by arrival against schedule.
Only 11 of 273 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 3502
The latest arrival of the period was on 7 June 2026, 7 hours 41 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 |
|---|---|---|
| 7 June 2026 | 7 hours 41 minutes | Extreme weather |
| 17 February 2026 | 4 hours 46 minutes | Carrier |
| 15 January 2026 | 3 hours 56 minutes | Extreme weather |
| 8 December 2025 | 2 hours 26 minutes | Carrier |
| 17 August 2026 | 1 hour 19 minutes | Carrier |
Delay causes
Why OO 3502 runs late
Carrier accounts for 49% of the 1,566 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Carrier
- 45%Extreme weather
- 7%National Airspace System
Extreme weather accounts for 45% 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 7.4 times the usual weather exposure. The split is drawn from 1,566 delay minutes reported on OO 3502.
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 2.2% 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 same number turns up on four other city pairs in the data, including DTW to GRB (5), GRB to DTW (5) and ATL to MOB (1), but none flew often enough under OO 3502 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to TUS to LAX only.
One caution: this is a thin sample. 273 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 3502
For a booking, OO 3502 has one of the better records a US domestic flight can show: 94.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- TUS to LAX, every carrier and departure
- LAX to TUS, the return direction
- SkyWest Airlines 6393 on the same route87.0%
- Los Angeles International (LAX) 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.