Carrier route record
OOSLC→IDA
SkyWest Airlines · Salt Lake City to Idaho Falls
- Flights
- 872
- Period
- July 2025 to June 2026
- Share of route
- 73%
- Carriers
- 2
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on SLC to IDA earns an A+. Nearly every flight arrives inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 16 points better than the national rate of 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 872 flights, with a median arrival 8 minutes early.
Set against the rest of the country, SkyWest's SLC to IDA record is 16 points better than the US average of 77.6%. That gap is worth roughly 157 fewer late arrivals for every thousand flights.
Key figures
On time
93.3%
Arrivals under 15 minutes late, of 870 completed flights
Avg delay
76 min
Across delayed arrivals only, not all flights
Cancelled
0.11%
National rate is 1.81%
Whole route
89.3%
Every carrier on SLC to IDA, 1,189 flights
These figures cover 872 flights between July 2025 and June 2026. The median arrival is 8 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.
Carrier by carrier
SkyWest against every carrier on SLC to IDA
SkyWest flew 872 of the 1,189 flights on SLC to IDA, most of the route. Its 93.3% on time is 4 points better than the route as a whole, which runs 89.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 93.3% to Delta at 78.0%. 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) | 872 | 93.3% | 76 min | 0.11% | A+ |
| Delta Air Linesthin sample | 317 | 78.0% | 69 min | 0.95% | B+ |
Flight by flight
SkyWest flight numbers on SLC to IDA
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. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am2 flights—
- 8am–11am117 flights98.3%
- 11am–2pm365 flights94.5%
- 2pm–5pm46 flights76.1%
- 5pm–8pm294 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 91 flights.
Across the week, Friday is the strongest day at 96.1% on time and Sunday the weakest at 88.7%. 7 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 64% of the 4,380 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.
- 64%Carrier
- 25%Extreme weather
- 11%National Airspace System
Extreme weather accounts for 25% 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 4.0 times the usual weather exposure. The split is drawn from 4,380 reported delay minutes.
The largest share of delay minutes, 64%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,803 of the 4,380 delay minutes reported here.
Cancellations are rare at 0.11%, below the national 1.81% 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 2.9% 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.
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 92.9% on time across 872 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. 872 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. 872 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 93.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 870 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 IDA78.0%
- SkyWest Airlines network-wide record
- Salt Lake City International (SLC) delay statistics
- The best time of day to fly, according to 7.04 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, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.