Flight number record
OO 4054
SkyWest Airlines · Salt Lake City to Tucson
- Route
- SLC → TUS
- Departs
- 20:30
- Flights
- 365
- Period
- July 2025 to June 2026
Historical statistics for July 2025 to June 2026, not live status. For today’s OO 4054, 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 4054 earns an A+. More than four flights in five arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 8 points better than the national rate of 77.6%. When something does go wrong the average delay runs about 40 minutes. That rests on 365 flights, with a median arrival 6 minutes early.
Set against the rest of the country, OO 4054's record is 8 points better than the US average of 77.6%. That gap is worth roughly 84 fewer late arrivals for every thousand flights.
Key figures
On time
86.0%
Arrivals under 15 minutes late, of 364 completed flights
Avg delay
39 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.81%
1 hour+ late
1.6%
National rate is 8.1%
These figures cover 365 flights between July 2025 and June 2026. The median arrival is 6 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 4054 flies
OO 4054 flies SLC to TUS without a single fixed slot. Its most common scheduled departure was 20:30, used on 172 of 365 flights, with 20:40 (51 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.
- Departs 20:30172 flights47.1%
- Departs 20:4051 flights14.0%
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 20:30 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 4054 runs 16 points better at 86.0%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
Against the route
OO 4054 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 4054 is 6 points behind 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 7 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4054 | 365 | 86.0% | 39 min | 0.00% | 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 4054 quarter by quarter
Quarter by quarter OO 4054 held fairly steady: 89.0% in Jul–Sep 2025, 83.7% in Oct–Dec 2025, 81.1% in Jan–Mar 2026 and 90.1% in Apr–Jun 2026. A spread of 9 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
- Jul–Sep 202592 flights89.0%
- Oct–Dec 202592 flights83.7%
- Jan–Mar 202690 flights81.1%
- Apr–Jun 202691 flights90.1%
Scale runs 75% to 95%. Rows with fewer than 30 flights show a dash.
By weekday, OO 4054 did best on Tuesday at 94.3% on time and worst on Monday at 78.8%. Each day rests on about 52 flights, so a gap of 16 points is worth noticing but could still narrow in another year.
Delay causes
Why OO 4054 runs late
One category carries most of the weight here. Carrier accounts for 60% of the 2,001 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.
- 60%Carrier
- 29%Extreme weather
- 10%National Airspace System
Extreme weather accounts for 29% 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 4.7 times the usual weather exposure. The split is drawn from 2,001 delay minutes reported on OO 4054.
Cancellations are rare at 0.00%, below the national 1.81% 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 1.6% 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.
Every one of the 365 flights under OO 4054 in the data flew SLC to TUS. 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 4054
For a booking, OO 4054 is one of the weaker ways to fly SLC to TUS: 6 points below the route as a whole. If the schedule allows, compare it with the other departures listed on the route page before settling on this one.
Related
Where to go next
- SLC to TUS, every carrier and departure
- TUS to SLC, the return direction
- SkyWest Airlines 3717 on the same route92.7%
- 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.