Best Time to Fly IDA to SLC: On-Time Stats by Hour & Airline
Idaho Falls Regional → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
1,193 flights were scheduled from Idaho Falls (IDA) to Salt Lake City (SLC) in the last 12 months, and 91.8% of those that flew arrived on time, 14.2 points above the US average of 77.6%.
Among 2 airlines, SkyWest Airlines led with 92.7% on time and Delta Air Lines was last with 89.5%.
Over 24 months, Friday was the most reliable day (93% on time) and February the worst month (84%).
The cancellation rate was 0.4% (US average 1.8%).
IDA to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 92.7% | 73 min | 0.1% | 876 |
| Delta Air Lines | 89.5% | 172 min | 1.3% | 317 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly IDA to SLC
On-time arrival % by scheduled departure hour (local time), 2,300 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.7% | 1.4% | 138 |
| 6am–7am | 86.8% | 0.3% | 592 |
| 9am–10am | Limited data | 2 | |
| 11am–12pm | 97.6% | 0.0% | 168 |
| 12pm–1pm | 93.8% | 0.0% | 32 |
| 1pm–2pm | 93.0% | 0.0% | 525 |
| 2pm–3pm | Limited data | 5 | |
| 3pm–4pm | 93.2% | 0.0% | 176 |
| 6pm–7pm | 88.5% | 0.4% | 539 |
| 7pm–8pm | 94.3% | 0.0% | 123 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on IDA to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 97.5% | +6.8 pts | 0.0% | 40 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.2% | -5.5 pts | 1.2% | 82 |
| Summer peak (Jun 15 - Aug 15) | 91.5% | +0.9 pts | 0.2% | 472 |
| All other days | 90.7% | — | 0.2% | 1,706 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).