Carrier route record
OOSLC→IDA
SkyWest Airlines · Salt Lake City to Idaho Falls
- 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 SLC to IDA 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 9 minutes early.
Set against the rest of the country, SkyWest's SLC to IDA record is 15 points better than the US average of 77.3%. That gap is worth roughly 152 fewer late arrivals for every thousand flights.
Key figures
On time
92.5%
Arrivals under 15 minutes late, of 876 completed flights
Avg delay
70 min
Across delayed arrivals only, not all flights
Cancelled
0.11%
National rate is 1.89%
Whole route
89.6%
Every carrier on SLC to IDA, 1,195 flights
These figures cover 878 flights between September 2025 and August 2026. The median arrival is 9 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 SLC to IDA
SkyWest flew 878 of the 1,195 flights on SLC to IDA, most of the route. Its 92.5% on time is 3 points better than the route as a whole, which runs 89.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 92.5% to Delta at 81.4%. 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 | 92.5% | 70 min | 0.11% | A+ |
| Delta Air Linesthin sample | 317 | 81.4% | 64 min | 1.26% | B |
Flight by flight
SkyWest flight numbers on SLC to IDA
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 matters more here than the choice of carrier. The gap between the best and worst window is 24 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am124 flights95.2%
- 11am–2pm365 flights93.4%
- 2pm–5pm46 flights76.1%
- 5pm–8pm295 flights91.5%
- 8pm–5am48 flights100.0%
Scale runs 70% to 100%. Rows with fewer than 30 flights show a dash.
The 8pm–5am window is the strongest at 100.0% on time. The full set of windows spans 24 points.
Across the year
SkyWest on SLC to IDA through the year
February is the weak month at 84.0% 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 94.5% on time and Sunday the weakest at 90.4%, a spread of 4 points.
Arrival by arrival
How late SkyWest on SLC to IDA runs when it is late
SkyWest on SLC to IDA often beats the schedule: 226 of 876 completed flights, 26%, arrived 15 minutes or more early. The 66 late arrivals split 26 under half an hour, 12 between 30 and 60 minutes, and 28 an hour or more.
- 15+ min early226 flights25.8%
- Within 15 min584 flights66.7%
- 15–29 min late26 flights3.0%
- 30–59 min late12 flights1.4%
- 1–2 hours late16 flights1.8%
- 2+ hours late12 flights1.4%
Scale runs 0% to 100%.
Share of 876 completed flights by arrival against schedule.
15 of 67 late departures made up the time and arrived on time, 22% of them. Only 14 left on time and still arrived late.
The worst days
Worst days for SkyWest on SLC to IDA
The latest arrival of the period was on 18 February 2026, 4 hours 46 minutes behind schedule; most of its delay minutes were filed as extreme weather. On four of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 18 February 2026 | 4 hours 46 minutes | Extreme weather |
| 29 May 2026 | 4 hours 2 minutes | Carrier |
| 2 February 2026 | 3 hours 31 minutes | Carrier |
| 15 April 2026 | 3 hours 10 minutes | Carrier |
| 4 March 2026 | 3 hours 6 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 61% of the 4,591 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 27%Extreme weather
- 12%National Airspace System
Extreme weather accounts for 27% 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 4.5 times the usual weather exposure. The split is drawn from 4,591 reported delay minutes.
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,804 of the 4,591 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 3.2% 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 8pm–5am window matters as much as it does.
The return leg runs 92.6% 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 SLC to IDA
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 92.5% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 876 completed flights over 12 months sit behind that.
Related
Where to go next
- SLC to IDA, every carrier
- SkyWest on IDA to SLC, the return leg
- Delta Air Lines on SLC to IDA81.4%
- 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.