Carrier route record
OOIDA→SLC
SkyWest Airlines · Idaho Falls to Salt Lake City
- Flights
- 878
- Period
- September 2025 to August 2026
- Share of route
- 73%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on IDA to SLC 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 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 878 flights, with a median arrival 11 minutes early.
Set against the rest of the country, SkyWest's IDA to SLC record is 15 points better than the US average of 77.3%. That gap is worth roughly 153 fewer late arrivals for every thousand flights.
Key figures
On time
92.6%
Arrivals under 15 minutes late, of 877 completed flights
Avg delay
77 min
Across delayed arrivals only, not all flights
Cancelled
0.11%
National rate is 1.89%
Whole route
91.8%
Every carrier on IDA to SLC, 1,195 flights
These figures cover 878 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.
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Carrier by carrier
SkyWest against every carrier on IDA to SLC
SkyWest flew 878 of the 1,195 flights on IDA to SLC, most of the route. Its 92.6% on time is about level with the route as a whole at 91.8%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 92.6% to Delta at 89.8%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 878 | 92.6% | 77 min | 0.11% | A+ |
| Delta Air Linesthin sample | 317 | 89.8% | 175 min | 1.26% | A |
Flight by flight
SkyWest flight numbers on IDA to SLC
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.
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 878 flights.
- 5am–8am48 flights100.0%
- 8am–11am—
- 11am–2pm362 flights93.9%
- 2pm–5pm127 flights90.6%
- 5pm–8pm341 flights90.9%
- 8pm–5am—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 100.0% of the time, against 90.6% for the afternoon window. That is 9 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 362 flights scheduled in it.
Across the year
SkyWest on IDA to SLC through the year
January is the weak month at 86.5% on time, against 100.0% in November. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. August was the busiest month here, with 93 flights.
Across the week, Friday is the strongest day at 96.1% on time and Sunday the weakest at 88.9%, a spread of 7 points.
Arrival by arrival
How late SkyWest on IDA to SLC runs when it is late
SkyWest on IDA to SLC often beats the schedule: 338 of 877 completed flights, 39%, arrived 15 minutes or more early. The 65 late arrivals split 21 under half an hour, 12 between 30 and 60 minutes, and 32 an hour or more.
- 15+ min early338 flights38.5%
- Within 15 min474 flights54.0%
- 15–29 min late21 flights2.4%
- 30–59 min late12 flights1.4%
- 1–2 hours late20 flights2.3%
- 2+ hours late12 flights1.4%
Scale runs 0% to 100%.
Share of 877 completed flights by arrival against schedule.
10 of 63 late departures made up the time and arrived on time, 16% of them. Only 12 left on time and still arrived late.
The worst days
Worst days for SkyWest on IDA to SLC
The latest arrival of the period was on 27 July 2026, 6 hours 41 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 27 July 2026 | 6 hours 41 minutes | Carrier |
| 18 February 2026 | 4 hours 16 minutes | Extreme weather |
| 29 May 2026 | 3 hours 54 minutes | Carrier |
| 4 March 2026 | 3 hours 11 minutes | Carrier |
| 15 July 2026 | 3 hours 8 minutes | Extreme weather |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 59% of the 4,996 delay minutes carriers reported here, and the remaining four split what is left.
- 59%Carrier
- 31%Extreme weather
- 9%National Airspace System
Extreme weather accounts for 31% 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 monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.2 times the usual weather exposure. The split is drawn from 4,996 reported delay minutes.
The largest share of delay minutes, 59%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,965 of the 4,996 delay minutes reported here.
Cancellations are rare at 0.11%, below the national 1.89% 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 stage length
What a delay here costs
Badly late arrivals are rare here: only 3.6% 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.
At 189 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg runs 92.5% on time across 878 flights, within half a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 878 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 SkyWest on IDA to SLC
Put together: treat all of this as provisional. 878 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 92.6% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 877 completed flights over 12 months sit behind that.
Related
Where to go next
- IDA to SLC, every carrier
- SkyWest on SLC to IDA, the return leg
- Delta Air Lines on IDA to SLC89.8%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
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.