Flight number record
OO 4106
SkyWest Airlines · Reno to Los Angeles
- Route
- RNO → LAX
- Departs
- 07:00
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 4106, 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 4106 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 11 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 365 flights, with a median arrival 9 minutes early.
Set against the rest of the country, OO 4106's record is 11 points better than the US average of 77.3%. That gap is worth roughly 106 fewer late arrivals for every thousand flights.
Key figures
On time
87.9%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
71 min
Across delayed arrivals only, not all flights
Cancelled
0.27%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. The median arrival is 9 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 4106 flies
OO 4106 flies RNO to LAX without a single fixed slot. Its most common scheduled departure was 07:00, used on 173 of 365 flights, with 07:05 (94 flights) and 07:20 (41 flights) next.
- Departs 07:00173 flights47.4%
- Departs 07:0594 flights25.8%
- Departs 07:2041 flights11.2%
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 07:00 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4106 runs level with that at 87.9%. 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 4106 next to RNO to LAX
Every carrier on RNO to LAX combined arrived on time 87.2% of the time across 2,472 flights, so OO 4106 is about level with it. SkyWest flew 1,974 flights on the same city pair under all its flight numbers, including this one, and those ran 88.8% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 9 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4106 | 365 | 87.9% | 71 min | 0.27% | A+ |
| All SkyWest Airlines on RNO–LAX | 1,974 | 88.8% | 64 min | 0.30% | A+ |
| All carriers on RNO–LAX | 2,472 | 87.2% | 61 min | 0.49% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 4106 quarter by quarter
OO 4106 did not run the same all year. Its best quarter was Jul–Sep 2025 at 96.7% on time and its weakest Jan–Mar 2026 at 79.8%, a swing of 17 points on roughly 73 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 flights96.7%
- Oct–Dec 202592 flights91.3%
- Jan–Mar 202690 flights79.8%
- Apr–Jun 202691 flights89.0%
- Jul–Sep 202662 flights88.7%
Scale runs 70% to 100%.
By weekday, OO 4106 did best on Monday at 94.3% on time and worst on Thursday at 78.8%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4106 runs when it is late
OO 4106 often beats the schedule: 119 of 364 completed flights, 33%, arrived 15 minutes or more early. The 44 late arrivals split 17 under half an hour, 15 between 30 and 60 minutes, and 12 an hour or more.
- 15+ min early119 flights32.7%
- Within 15 min201 flights55.2%
- 15–29 min late17 flights4.7%
- 30–59 min late15 flights4.1%
- 1–2 hours late5 flights1.4%
- 2+ hours late7 flights1.9%
Scale runs 0% to 100%.
Share of 364 completed flights by arrival against schedule.
A late pushback is often recovered here: of 37 departures that left 15 minutes late or more, 13 still arrived on time. In the other direction, 20 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 LAX.
The worst days
Worst days for OO 4106
The latest arrival of the period was on 16 October 2025, 8 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 16 October 2025 | 8 hours 41 minutes | Carrier |
| 21 May 2026 | 5 hours 30 minutes | Carrier |
| 25 March 2026 | 4 hours 25 minutes | Carrier |
| 4 June 2026 | 3 hours 19 minutes | Carrier |
| 12 June 2026 | 2 hours 38 minutes | Carrier |
Delay causes
Why OO 4106 runs late
Carrier accounts for 78% of the 3,128 delay minutes carriers reported here, and the remaining four split what is left.
- 78%Carrier
- 13%Extreme weather
- 9%National Airspace System
Extreme weather accounts for 13% 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 2.1 times the usual weather exposure. The split is drawn from 3,128 delay minutes reported on OO 4106.
Cancellations are rare at 0.27%, 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 3.3% 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 365 flights under OO 4106 in the data flew RNO to LAX. 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. 365 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 4106
For a booking, OO 4106 has one of the better records a US domestic flight can show: 87.9% on time and 0.27% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- RNO to LAX, every carrier and departure
- LAX to RNO, the return direction
- SkyWest Airlines 4099 on the same route92.0%
- SkyWest Airlines 5328 on the same route93.2%
- 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.