Carrier route record
OOIDA→DEN
SkyWest Airlines · Idaho Falls to Denver
- Flights
- 1,536
- Period
- July 2025 to June 2026
- Share of route
- 88%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on IDA to DEN lands a B+, 2 points better than the national rate of 77.6%. About one flight in five arrives 15 minutes late or worse, and those flights are late by an hour and a half on average. That is a workable record, not a spotless one. That rests on 1,536 flights, with a median arrival 10 minutes early.
The US average over the same twelve months is 77.6%, so there is little to separate SkyWest on IDA to DEN from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.
Key figures
On time
79.4%
Arrivals under 15 minutes late, of 1,515 completed flights
Avg delay
91 min
Across delayed arrivals only, not all flights
Cancelled
0.78%
National rate is 1.81%
Whole route
79.2%
Every carrier on IDA to DEN, 1,738 flights
These figures cover 1,536 flights between July 2025 and June 2026. Beyond the headline rate, 10.0% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
SkyWest against every carrier on IDA to DEN
SkyWest flew 1,536 of the 1,738 flights on IDA to DEN, most of the route. Its 79.4% on time is about level with the route as a whole at 79.2%. Ranked by on-time rate it is number two of three carriers on the route, where the range runs from United at 80.3% to Allegiant at 50.0%. Two 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 |
|---|---|---|---|---|---|
| United Airlinesthin sample | 184 | 80.3% | 103 min | 0.00% | B+ |
| SkyWest Airlines (this page) | 1,536 | 79.4% | 91 min | 0.78% | B+ |
| Allegiant Airthin sample | 18 | 50.0% | 64 min | 5.56% | F− |
Flight by flight
SkyWest flight numbers on IDA to DEN
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 23 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–8am518 flights87.8%
- 8am–11am289 flights88.4%
- 11am–2pm89 flights87.6%
- 2pm–5pm404 flights65.7%
- 5pm–8pm234 flights70.0%
- 8pm–5am2 flights—
Scale runs 55% to 95%. Rows with fewer than 30 flights show a dash.
Book the morning departure. Flights leaving between 8am–11am arrive on time 88.4% of the time, against 65.7% for the afternoon window. That is 23 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 5am–8am window is the busiest, with 518 flights scheduled in it.
Across the year
SkyWest on IDA to DEN through the year
July is the worst month at 59.9% on time, 31 points below November, the best at 90.8%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. July was the busiest month here, with 183 flights.
Across the week, Sunday is the strongest day at 83.7% on time and Thursday the weakest at 76.6%. 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 45% of the 28,000 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.
- 45%Carrier
- 25%National Airspace System
- 19%Late-arriving aircraft
- 10%Extreme weather
The largest share of delay minutes, 45%, 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 13,000 of the 28,000 delay minutes reported here. The split is drawn from 28,241 reported delay minutes.
Cancellations are rare at 0.78%, 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
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 10.0% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 458 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 8am–11am window matters as much as it does.
The return leg runs 80.4% on time across 1,535 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
The sample behind these figures is 1,536 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
What to do with this
Booking SkyWest on IDA to DEN
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 90.8% on time and July 59.9%, a swing of 31 points. If the dates move at all, move them out of July before you think about anything else. 1,515 completed flights over 12 months sit behind that.
Related
Where to go next
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.