Flight number record
OO 3718
SkyWest Airlines · Salt Lake City to Tucson
- Route
- SLC → TUS
- Departs
- 09:25
- Flights
- 255
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s OO 3718, 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 3718 earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 19 points better than the national rate of 77.3%. When something does go wrong the average delay runs roughly 45 minutes. That rests on 255 flights, with a median arrival 11 minutes early.
Set against the rest of the country, OO 3718's record is 19 points better than the US average of 77.3%. That gap is worth roughly 192 fewer late arrivals for every thousand flights.
Key figures
On time
96.5%
Arrivals under 15 minutes late, of 255 completed flights
Avg delay
43 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
0.4%
National rate is 8.3%
These figures cover 255 flights between September 2025 and August 2026. The median arrival is 11 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.
Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Schedule
When OO 3718 flies
OO 3718 is scheduled to leave Salt Lake City (SLC) at 09:25 local time and reach Tucson (TUS) at 10:24. That slot held for 210 of the 255 scheduled departures in the data, so the figures below describe one steady operation rather than a number that moved around the clock.
- Departs 09:25210 flights82.4%
- Departs 09:3129 flights11.4%
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 09:25 departure sits in the 8am–11am window. Across every US flight scheduled in that window the on-time rate is 83.9%, and OO 3718 runs 13 points better at 96.5%. Early departures usually start with an aircraft that has not flown yet that day, which is most of why the window does well.
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Against the route
OO 3718 next to SLC to TUS
Every carrier on SLC to TUS combined arrived on time 91.4% of the time across 1,112 flights, so OO 3718 is 5 points ahead of it. SkyWest flew 1,087 flights on the same city pair under all its flight numbers, including this one, and those ran 91.4% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 18 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 3718thin sample | 255 | 96.5% | 43 min | 0.00% | A+ |
| All SkyWest Airlines on SLC–TUS | 1,087 | 91.4% | 50 min | 0.18% | A+ |
| All carriers on SLC–TUS | 1,112 | 91.4% | 52 min | 0.18% | A+ |
| SkyWest Airlines, whole network | 855,406 | 78.7% | 88 min | 1.79% | B |
Across the year
OO 3718 quarter by quarter
Quarter by quarter OO 3718 held fairly steady: 94.4% in Jan–Mar 2026, 98.9% in Apr–Jun 2026 and 95.2% in Jul–Sep 2026. A spread of 5 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Oct–Dec 202512 flights—
- Jan–Mar 202690 flights94.4%
- Apr–Jun 202691 flights98.9%
- Jul–Sep 202662 flights95.2%
Scale runs 85% to 100%. Rows with fewer than 30 flights show a dash.
By weekday, OO 3718 ranged from 94.4% on Tuesday to 100.0% on Sunday. With about 36 flights behind each day, a spread of 6 points is inside normal variation, so the day you fly is not worth changing for this flight.
Arrival by arrival
How late OO 3718 runs when it is late
OO 3718 often beats the schedule: 101 of 255 completed flights, 40%, arrived 15 minutes or more early. The 9 late arrivals split 2 under half an hour, 6 between 30 and 60 minutes, and 1 an hour or more. Not one arrived two hours late.
- 15+ min early101 flights39.6%
- Within 15 min145 flights56.9%
- 15–29 min late2 flights0.8%
- 30–59 min late6 flights2.4%
- 1–2 hours late1 flights0.4%
- 2+ hours late0 flights0.0%
Scale runs 0% to 100%.
Share of 255 completed flights by arrival against schedule.
Only 12 of 255 completed flights left 15 minutes late or more, too few to say how often the time is made up.
The worst days
Worst days for OO 3718
The latest arrival of the period was on 11 February 2026, 1 hour 33 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on five of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 11 February 2026 | 1 hour 33 minutes | Carrier |
| 30 January 2026 | 52 minutes | Carrier |
| 27 April 2026 | 46 minutes | Carrier |
| 26 January 2026 | 43 minutes | Carrier |
| 29 August 2026 | 43 minutes | Carrier |
Delay causes
Why OO 3718 runs late
Carrier accounts for 89% of the 385 delay minutes carriers reported here, and the remaining four split what is left.
- 89%Carrier
- 11%National Airspace System
The largest share of delay minutes, 89%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 343 of the 385 delay minutes reported here. The split is drawn from 385 delay minutes reported on OO 3718.
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 0.4% 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 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.
The same number turns up on two other city pairs in the data, including TUS to SLC (153) and BZN to SEA (109), but none flew often enough under OO 3718 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. 255 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 3718
For a booking, OO 3718 has one of the better records a US domestic flight can show: 96.5% on time and 0.00% cancelled. That is a base rate, not a promise about any single day.
Related
Where to go next
- SLC to TUS, every carrier and departure
- TUS to SLC, the return direction
- SkyWest Airlines 4054 on the same route83.8%
- SkyWest Airlines 3717 on the same route93.8%
- Salt Lake City International (SLC) 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
- Worst months to fly in the US, ranked by the data
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.