Flight number record

OO 5117

SkyWest Airlines · Los Angeles to St. George

Route: LAX → SGU
Departs: 13:25
Flights: 294
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 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 9 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 294 flights, with a median arrival 6 minutes early.

Set against the rest of the country, OO 5117's record is 9 points better than the US average of 77.6%. That gap is worth roughly 87 fewer late arrivals for every thousand flights.

On time

86.3%

Arrivals under 15 minutes late, of 292 completed flights

Avg delay

76 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

4.1%

National rate is 8.1%

These figures cover 294 flights between July 2025 and June 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.

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 220 of 294 flights, with 13:40 (36 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 13:25220 flights74.8%
Departs 13:4036 flights12.2%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

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 78.8%, and OO 5117 runs 8 points better at 86.3%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 5117 next to LAX to SGU

Every carrier on LAX to SGU combined arrived on time 86.6% of the time across 324 flights, so OO 5117 is about level with it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 7 points.

OO 5117 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 5117thin sample	294	86.3%	76 min	0.00%	A+
All SkyWest Airlines on LAX–SGUthin sample	324	86.6%	82 min	0.00%	A+
All carriers on LAX–SGUthin sample	324	86.6%	82 min	0.00%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	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 74 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 202560 flights90.0%
Oct–Dec 202592 flights89.1%
Jan–Mar 202690 flights86.5%
Apr–Jun 202652 flights76.5%

Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 5117 did best on Sunday at 93.6% on time and worst on Thursday at 76.6%. Each day rests on about 42 flights, so a gap of 17 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 5117 runs late

One category carries most of the weight here. Late-arriving aircraft accounts for 49% of the 3,052 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
49%
Carrier
42%
Extreme weather
5%
National Airspace System
4%

49% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 3,052 reported delay minutes here, that single category outweighs weather by 11 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 3,052 delay minutes reported on OO 5117.

Cancellations are rare at 0.00%, below the national 1.81% 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 4.1% land an hour or more behind schedule, against 8.1% 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 one other city pair in the data, including SGU to DEN (48), 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. 294 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: 86.3% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.

Where to go next

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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures