Flight number record
OO 6393
SkyWest Airlines · Tucson to Los Angeles
- Route
- TUS → LAX
- Departs
- 06:00
- Flights
- 299
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 6393, 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 6393 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 10 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 299 flights, with a median arrival 8 minutes early.
Set against the rest of the country, OO 6393's record is 10 points better than the US average of 77.3%. That gap is worth roughly 97 fewer late arrivals for every thousand flights.
Key figures
On time
87.0%
Arrivals under 15 minutes late, of 299 completed flights
Avg delay
72 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
4.7%
National rate is 8.3%
These figures cover 299 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 6393 flies
OO 6393 flies TUS to LAX without a single fixed slot. Its most common scheduled departure was 06:00, used on 41 of 299 flights, with 06:02 (34 flights) and 07:02 (33 flights) next.
- Departs 06:0041 flights13.7%
- Departs 06:0234 flights11.4%
- Departs 07:0233 flights11.0%
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 06:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 6393 runs 2 points worse at 87.0%. 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 6393 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 6393 is about level with 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 8 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 6393thin sample | 299 | 87.0% | 72 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 6393 quarter by quarter
OO 6393 did not run the same all year. Its best quarter was Apr–Jun 2026 at 96.5% on time and its weakest Jan–Mar 2026 at 74.2%, a swing of 22 points on roughly 60 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 flights90.0%
- Oct–Dec 202556 flights89.3%
- Jan–Mar 202666 flights74.2%
- Apr–Jun 202685 flights96.5%
- Jul–Sep 202662 flights83.9%
Scale runs 65% to 100%.
By weekday, OO 6393 did best on Monday at 95.3% on time and worst on Sunday at 78.6%. Each day rests on about 43 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 6393 runs when it is late
OO 6393 often beats the schedule: 91 of 299 completed flights, 30%, arrived 15 minutes or more early. The 39 late arrivals split 11 under half an hour, 14 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early91 flights30.4%
- Within 15 min169 flights56.5%
- 15–29 min late11 flights3.7%
- 30–59 min late14 flights4.7%
- 1–2 hours late8 flights2.7%
- 2+ hours late6 flights2.0%
Scale runs 0% to 100%.
Share of 299 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. 9 flights left on time and still arrived late.
The worst days
Worst days for OO 6393
The latest arrival of the period was on 6 May 2026, 6 hours 55 minutes behind schedule; most of its delay minutes were filed as a late-arriving aircraft. 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 |
|---|---|---|
| 6 May 2026 | 6 hours 55 minutes | Late-arriving aircraft |
| 11 February 2026 | 5 hours 54 minutes | Carrier |
| 7 February 2026 | 3 hours 4 minutes | Late-arriving aircraft |
| 14 July 2026 | 2 hours 20 minutes | Carrier |
| 30 December 2025 | 2 hours 8 minutes | Carrier |
Delay causes
Why OO 6393 runs late
Carrier accounts for 64% of the 2,801 delay minutes carriers reported here, and the remaining four split what is left.
- 64%Carrier
- 33%Late-arriving aircraft
- 1%National Airspace System
- 1%Extreme weather
The largest share of delay minutes, 64%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,799 of the 2,801 delay minutes reported here. The split is drawn from 2,801 delay minutes reported on OO 6393.
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 4.7% 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 PHX to EGE (22), EGE to PHX (22) and PHX to OKC (4), but none flew often enough under OO 6393 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. 299 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 6393
For a booking, OO 6393 has one of the better records a US domestic flight can show: 87.0% 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 3502 on the same route94.1%
- 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
- Why the first flight of the morning is statistically safest
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.