Flight number record
OO 4054
SkyWest Airlines · Salt Lake City to Tucson
- Route
- SLC → TUS
- Departs
- 20:30
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 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 lands a B+, 7 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 365 flights, with a median arrival 6 minutes early.
Set against the rest of the country, OO 4054's record is 7 points better than the US average of 77.3%. That gap is worth roughly 65 fewer late arrivals for every thousand flights.
Key figures
On time
83.8%
Arrivals under 15 minutes late, of 365 completed flights
Avg delay
48 min
Across delayed arrivals only, not all flights
Cancelled
0.00%
National rate is 1.89%
1 hour+ late
3.3%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 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.
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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 181 of 365 flights, with 20:40 (47 flights) next.
- Departs 20:30181 flights49.6%
- Departs 20:4047 flights12.9%
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 20:30 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.1%, and OO 4054 runs 14 points better at 83.8%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.
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Against the route
OO 4054 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 4054 is 8 points behind it. SkyWest flew 1,087 flights on the same city pair under all its flight numbers, including this one, and those ran 91.4% on time. Across its whole network SkyWest Airlines managed 78.7%, which this flight beats by 5 points.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| OO 4054 | 365 | 83.8% | 48 min | 0.00% | B+ |
| 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 4054 quarter by quarter
OO 4054 did not run the same all year. Its best quarter was Apr–Jun 2026 at 90.1% on time and its weakest Jul–Sep 2026 at 77.4%, a swing of 13 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights86.7%
- Oct–Dec 202592 flights83.7%
- Jan–Mar 202690 flights81.1%
- Apr–Jun 202691 flights90.1%
- Jul–Sep 202662 flights77.4%
Scale runs 70% to 95%.
By weekday, OO 4054 did best on Tuesday at 94.2% on time and worst on Sunday at 76.9%. Each day rests on about 52 flights, so a gap of 17 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late OO 4054 runs when it is late
Most of the lateness is short. 30 of the 59 late arrivals were under half an hour behind, and 12 reached an hour or more.
- 15+ min early86 flights23.6%
- Within 15 min220 flights60.3%
- 15–29 min late30 flights8.2%
- 30–59 min late17 flights4.7%
- 1–2 hours late7 flights1.9%
- 2+ hours late5 flights1.4%
Scale runs 0% to 100%.
Share of 365 completed flights by arrival against schedule.
A late pushback is often recovered here: of 65 departures that left 15 minutes late or more, 20 still arrived on time. 14 flights left on time and still arrived late.
The worst days
Worst days for OO 4054
The latest arrival of the period was on 4 January 2026, 4 hours 34 minutes behind schedule; most of its delay minutes were filed as extreme weather. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 4 January 2026 | 4 hours 34 minutes | Extreme weather |
| 21 August 2026 | 3 hours 18 minutes | Carrier |
| 29 July 2026 | 3 hours 14 minutes | Extreme weather |
| 28 November 2025 | 2 hours 20 minutes | Carrier |
| 18 February 2026 | 2 hours 6 minutes | Extreme weather |
Delay causes
Why OO 4054 runs late
Carrier accounts for 58% of the 2,852 delay minutes carriers reported here, and the remaining four split what is left.
- 58%Carrier
- 33%Extreme weather
- 9%National Airspace System
Extreme weather accounts for 33% 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 5.5 times the usual weather exposure. The split is drawn from 2,852 delay minutes reported on OO 4054.
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 3.3% 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.
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: 8 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 route93.8%
- SkyWest Airlines 3718 on the same route96.5%
- 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.