Flight number record

OO 4810

SkyWest Airlines · St. George to Phoenix

Route: SGU → PHX
Departs: 07:30
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4810, 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 4810 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 77.6%. When something does go wrong the average delay runs close to two hours. That rests on 365 flights, with a median arrival 14 minutes early.

Set against the rest of the country, OO 4810's record is 10 points better than the US average of 77.6%. That gap is worth roughly 100 fewer late arrivals for every thousand flights.

On time

87.6%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

104 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

5.8%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 14 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 4810 flies

OO 4810 flies SGU to PHX without a single fixed slot. Its most common scheduled departure was 07:30, used on 287 of 365 flights, with 07:25 (41 flights) and 06:22 (37 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 07:30287 flights78.6%
Departs 07:2541 flights11.2%
Departs 06:2237 flights10.1%

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 07:30 departure sits in the 5am–8am window. Across every US flight scheduled in that window the on-time rate is 89.3%, and OO 4810 runs level with that at 87.6%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.

Against the route

OO 4810 next to SGU to PHX

Every carrier on SGU to PHX combined arrived on time 82.4% of the time across 900 flights, so OO 4810 is 5 points ahead of it. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 9 points.

OO 4810 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 4810	365	87.6%	104 min	0.27%	A+
All SkyWest Airlines on SGU–PHX	900	82.4%	90 min	0.11%	B+
All carriers on SGU–PHX	900	82.4%	90 min	0.11%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 4810 quarter by quarter

Quarter by quarter OO 4810 held fairly steady: 88.0% in Jul–Sep 2025, 88.0% in Oct–Dec 2025, 86.5% in Jan–Mar 2026 and 87.9% in Apr–Jun 2026. A spread of 2 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights88.0%
Oct–Dec 202592 flights88.0%
Jan–Mar 202690 flights86.5%
Apr–Jun 202691 flights87.9%

Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.

By weekday, OO 4810 ranged from 82.7% on Sunday to 92.3% on Saturday. With about 52 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.

Delay causes

Why OO 4810 runs late

One category carries most of the weight here. Carrier accounts for 90% of the 4,684 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.

Carrier
90%
National Airspace System
7%
Late-arriving aircraft
3%

The largest share of delay minutes, 90%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,227 of the 4,684 delay minutes reported here. The split is drawn from 4,684 delay minutes reported on OO 4810.

Cancellations are rare at 0.27%, below the national 1.81% 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

5.8% of arrivals land an hour or more late, close to the national 8.1%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last close to two hours, which a normal layover absorbs.

Every one of the 365 flights under OO 4810 in the data flew SGU to PHX. 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 4810

For a booking, OO 4810 has one of the better records a US domestic flight can show: 87.6% on time and 0.27% 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