Flight number record

OO 3717

SkyWest Airlines · Salt Lake City to Tucson

Route: SLC → TUS
Departs: 15:00
Flights: 357
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 3717, 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 3717 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 15 points better than the national rate of 77.6%. When something does go wrong the average delay runs roughly 50 minutes. That rests on 357 flights, with a median arrival 9 minutes early.

Set against the rest of the country, OO 3717's record is 15 points better than the US average of 77.6%. That gap is worth roughly 151 fewer late arrivals for every thousand flights.

On time

92.7%

Arrivals under 15 minutes late, of 356 completed flights

Avg delay

49 min

Across delayed arrivals only, not all flights

Cancelled

0.28%

National rate is 1.81%

1 hour+ late

2.5%

National rate is 8.1%

These figures cover 357 flights between July 2025 and June 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.

Schedule

When OO 3717 flies

OO 3717 flies SLC to TUS without a single fixed slot. Its most common scheduled departure was 15:00, used on 111 of 357 flights, with 15:10 (49 flights) and 15:15 (44 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 15:00111 flights31.1%
Departs 15:1049 flights13.7%
Departs 15:1544 flights12.3%

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 15:00 departure sits in the 2pm–5pm window. Across every US flight scheduled in that window the on-time rate is 72.4%, and OO 3717 runs 20 points better at 92.7%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.

Against the route

OO 3717 next to SLC to TUS

Every carrier on SLC to TUS combined arrived on time 91.6% of the time across 1,112 flights, so OO 3717 is about level with it. SkyWest flew 1,087 flights on the same city pair under all its flight numbers, including this one, and those ran 91.7% on time. Across its whole network SkyWest Airlines managed 79.0%, which this flight beats by 14 points.

OO 3717 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 3717thin sample	357	92.7%	49 min	0.28%	A+
All SkyWest Airlines on SLC–TUS	1,087	91.7%	44 min	0.18%	A+
All carriers on SLC–TUS	1,112	91.6%	46 min	0.18%	A+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 3717 quarter by quarter

Quarter by quarter OO 3717 held fairly steady: 90.1% in Jul–Sep 2025, 94.1% in Oct–Dec 2025, 91.0% in Jan–Mar 2026 and 95.6% in Apr–Jun 2026. A spread of 6 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.

Jul–Sep 202591 flights90.1%
Oct–Dec 202586 flights94.1%
Jan–Mar 202689 flights91.0%
Apr–Jun 202691 flights95.6%

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

By weekday, OO 3717 ranged from 86.5% on Sunday to 96.1% on Saturday. With about 51 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 3717 runs late

One category carries most of the weight here. Carrier accounts for 76% of the 1,265 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
76%
Extreme weather
21%
National Airspace System
4%

Extreme weather accounts for 21% 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 3.3 times the usual weather exposure. The split is drawn from 1,265 delay minutes reported on OO 3717.

Cancellations are rare at 0.28%, 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 600 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.

The same number turns up on one other city pair in the data, including TUS to SLC (156), but none flew often enough under OO 3717 to report a rate for. Carriers move flight numbers between routes, so the figures on this page apply to SLC to TUS only.

One caution: this is a thin sample. 357 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 3717

For a booking, OO 3717 has one of the better records a US domestic flight can show: 92.7% on time and 0.28% 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