Flight number record

OO 6327

SkyWest Airlines · Salt Lake City to Phoenix

Route: SLC → PHX
Departs: 08:17
Flights: 365
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 6327, 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 6327 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 13 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 10 minutes early.

Set against the rest of the country, OO 6327's record is 13 points better than the US average of 77.6%. That gap is worth roughly 133 fewer late arrivals for every thousand flights.

On time

90.9%

Arrivals under 15 minutes late, of 364 completed flights

Avg delay

107 min

Across delayed arrivals only, not all flights

Cancelled

0.27%

National rate is 1.81%

1 hour+ late

2.5%

National rate is 8.1%

These figures cover 365 flights between July 2025 and June 2026. The median arrival is 10 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 6327 flies

OO 6327 flies SLC to PHX without a single fixed slot. Its most common scheduled departure was 08:17, used on 78 of 365 flights, with 08:23 (44 flights) and 07:13 (40 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 08:1778 flights21.4%
Departs 08:2344 flights12.1%
Departs 07:1340 flights11.0%

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 08:17 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 84.1%, and OO 6327 runs 7 points better at 90.9%. 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 6327 next to SLC to PHX

Every carrier on SLC to PHX combined arrived on time 83.9% of the time across 5,759 flights, so OO 6327 is 7 points ahead of it. SkyWest flew 1,159 flights on the same city pair under all its flight numbers, including this one, and those ran 86.5% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 12 points.

OO 6327 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 6327	365	90.9%	107 min	0.27%	A+
All SkyWest Airlines on SLC–PHX	1,159	86.5%	111 min	0.26%	A+
All carriers on SLC–PHX	5,759	83.9%	71 min	0.56%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 6327 quarter by quarter

Quarter by quarter OO 6327 held fairly steady: 95.7% in Jul–Sep 2025, 91.2% in Oct–Dec 2025, 88.9% in Jan–Mar 2026 and 87.9% in Apr–Jun 2026. A spread of 8 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202592 flights95.7%
Oct–Dec 202592 flights91.2%
Jan–Mar 202690 flights88.9%
Apr–Jun 202691 flights87.9%

Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.

By weekday, OO 6327 did best on Wednesday at 98.1% on time and worst on Sunday at 84.6%. Each day rests on about 52 flights, so a gap of 14 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 6327 runs late

One category carries most of the weight here. Carrier accounts for 79% of the 3,519 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
79%
Late-arriving aircraft
15%
National Airspace System
5%
Extreme weather
1%

The largest share of delay minutes, 79%, 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 2,782 of the 3,519 delay minutes reported here. The split is drawn from 3,519 delay minutes reported on OO 6327.

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

Badly late arrivals are rare here: only 2.5% 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 507 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.

Every one of the 365 flights under OO 6327 in the data flew SLC 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 6327

For a booking, OO 6327 has one of the better records a US domestic flight can show: 90.9% 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