Flight number record
OO 5117
SkyWest Airlines · Los Angeles to St. George
- Route
- LAX → SGU
- Departs
- 13:25
- Flights
- 298
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 5117, 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 5117 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 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 298 flights, with a median arrival 6 minutes early.
Set against the rest of the country, OO 5117's record is 8 points better than the US average of 77.3%. That gap is worth roughly 78 fewer late arrivals for every thousand flights.
Key figures
On time
85.1%
Arrivals under 15 minutes late, of 296 completed flights
Avg delay
84 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 298 flights between September 2025 and August 2026. The median arrival is 6 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 5117 flies
OO 5117 flies LAX to SGU without a single fixed slot. Its most common scheduled departure was 13:25, used on 224 of 298 flights, with 13:35 (31 flights) next.
- Departs 13:25224 flights75.2%
- Departs 13:3531 flights10.4%
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 13:25 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and OO 5117 runs 7 points better at 85.1%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
OO 5117 next to LAX to SGU
Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 6 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 5117thin sample | 298 | 85.1% | 84 min | 0.00% | A+ |
| All SkyWest Airlines on LAX–SGUthin sample | 298 | 85.1% | 84 min | 0.00% | A+ |
| All carriers on LAX–SGUthin sample | 298 | 85.1% | 84 min | 0.00% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 5117 quarter by quarter
OO 5117 did not run the same all year. Its best quarter was Jul–Sep 2025 at 90.0% on time and its weakest Apr–Jun 2026 at 76.5%, a swing of 14 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 202592 flights89.1%
- Jan–Mar 202690 flights86.5%
- Apr–Jun 202652 flights76.5%
- Jul–Sep 202634 flights79.4%
Scale runs 70% to 95%.
By weekday, OO 5117 did best on Tuesday at 93.5% on time and worst on Thursday at 78.4%. Each day rests on about 43 flights, so a gap of 15 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 5117 runs when it is late
The 44 late arrivals split 19 under half an hour, 11 between 30 and 60 minutes, and 14 an hour or more.
- 15+ min early73 flights24.7%
- Within 15 min179 flights60.5%
- 15–29 min late19 flights6.4%
- 30–59 min late11 flights3.7%
- 1–2 hours late6 flights2.0%
- 2+ hours late8 flights2.7%
Scale runs 0% to 100%.
Share of 296 completed flights by arrival against schedule.
Time lost at the gate mostly stays lost. Of 37 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 5117
The latest arrival of the period was on 2 August 2026, 8 hours 16 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 |
|---|---|---|
| 2 August 2026 | 8 hours 16 minutes | Late-arriving aircraft |
| 7 March 2026 | 6 hours 46 minutes | Carrier |
| 6 March 2026 | 6 hours 35 minutes | Late-arriving aircraft |
| 31 December 2025 | 6 hours 15 minutes | Carrier |
| 5 July 2026 | 4 hours 10 minutes | Carrier |
Delay causes
Why OO 5117 runs late
Late-arriving aircraft accounts for 49% of the 3,675 delay minutes carriers reported here, and the remaining four split what is left.
- 49%Late-arriving aircraft
- 44%Carrier
- 4%Extreme weather
- 3%National Airspace System
49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,675 reported delay minutes here, that single category outweighs weather by 13 to one. The split is drawn from 3,675 delay minutes reported on OO 5117.
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 two other city pairs in the data, including SGU to LAX (12) and DEN to SGU (9), but none flew often enough under OO 5117 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to LAX to SGU only.
One caution: this is a thin sample. 298 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 5117
For a booking, OO 5117 has one of the better records a US domestic flight can show: 85.1% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- 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.