Route profile
TUS→SLC
Flight reliability, delays and best times to fly from Tucson to Salt Lake City, 601 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 99% of comparable major US routes (4,598 compared)
Calculated from 3,389 flights. How this is calculated
TUS → SLC arrives on time 94.1% of the time; the return trip, SLC → TUS, arrives on time 91.4% of the time, a 2.7-point gap between the two directions of the same city pair.
TUS → SLC spends 22.9 minutes on the ground on a 601-mile trip: 15.9 minutes from pushback to wheels-up at TUS and 7.0 minutes from touchdown to gate at SLC.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
Every day of the week performs about the same on this route, steadier than 100% of 4,467 comparable routes.
94.6% on time on the best day (Friday) against 93.1% on the worst (Sunday).
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,467 in the comparison.
When it goes wrong
July 2023 – July 2026
3 min late
against a median of 14 min early
Percentiles over 3,389 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at SLC after arriving from TUS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 13% | Some risk |
| 45 min | 5.7% | Some risk |
| 60 min | 4.0% | Low risk |
| 90 min | 2.5% | Low risk |
| 120 min | 1.8% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.09% of the time and diverts 0.21% of the time, which a late arrival never shows up in.
Chance of missing is the share of 3,379 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 3 minutes late (90th-percentile gate arrival delay), over 3,389 operations.
Any other layover length: connection checker.
Best time to fly
TUS → SLC flights departing 5–9 AM arrived on time 97.7% of the time, against 88.5% for 3–6 PM departures, a gap of 9.2 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 96.2% on time from 288 flights
- 6 AM: 98.7% on time from 599 flights
- 7 AM: 96.6% on time from 178 flights
- 8 AM to 10 AM: too few flights to score
- 11 AM: 95.0% on time from 722 flights
- 12 PM: 96.1% on time from 333 flights
- 1 PM to 3 PM: too few flights to score
- 4 PM: 90.3% on time from 280 flights
- 5 PM: 87.8% on time from 688 flights
- 6 PM: 94.8% on time from 135 flights
- 7 PM to 11 PM: too few flights to score
Why TUS → SLC runs late
July 2023 – July 2026
crew, maintenance, boarding and fueling, all within the carrier’s control
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
Share of the delay minutes US DOT attributed to each cause for TUS → SLC. Only delays of 15 minutes or more are attributed.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| SkyWest Airlines | 3,364 | 94.2% | 0.06% | -14 min | 2.5% |
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| OO3745 SkyWest Airlines | 6:00 AM | 785 | 97.6% |
Weekly and seasonal patterns
By day of week
Friday is historically the most reliable day and Sunday the least, a gap of 1.5 percentage points.
By month
- Jan: 93.5%
- Feb: 93.9%
- Mar: 94.4%
- Apr: 96.0%
- May: 94.6%
- Jun: 90.4%
- Jul: 94.2%
- Aug: 95.0%
- Sep: 94.4%
- Oct: 95.3%
- Nov: 95.1%
- Dec: 92.9%
June is historically the weakest month and April the strongest, a spread of 5.6 percentage points.
Reliability over time
July 2023 – July 2026
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 93.0% against 95.3% in the 12 months before — declining by 2.3 percentage points.
Data and methodology
Calculated by FlyerIntel from 3,389 TUS → SLC flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed