Salt Lake City (SLC) to Idaho Falls (IDA): On-Time Performance
Data through May 2026
When you fly SLC to IDA matters as much as anything else about the booking: the route swung from 99% on-time in October 2024 to just 80% in December 2024. Across the full period the route averages 88% on-time against a national 78%.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 10 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 3.2
- last 12 months
- Duration
- 1h 4m
- scheduled
- Distance
- 189 mi
Best airline from SLC to IDA
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 92% | 7 min | 0.1% | 1,673 |
| Delta Air Lines | 76% | 17 min | 0.5% | 565 |
Monthly on-time trend
Best time to fly from SLC to IDA
Aim for departures around 1 p.m. (98% on-time); avoid 4 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 86% | 15 min |
| Tuesday | 89% | 9 min |
| Wednesday | 88% | 10 min |
| Thursday | 87% | 8 min |
| Friday | 88% | 8 min |
| Saturdaybest | 90% | 6 min |
| Sunday | 86% | 10 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft10%
- Airline operations68%
- National airspace system8%
- Weather14%
Frequently asked questions
- How often are flights from SLC to IDA delayed?
- 12% of SLC–IDA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 10 minutes.
- Which airline is most reliable from SLC to IDA?
- SkyWest Airlines has the best on-time record on this route at 92%, based on 1,673 flights. 2 airlines flew SLC–IDA frequently enough to compare in this period.
- What is the best time of day to fly from SLC to IDA?
- Departures around 1 p.m. have the best record (98% on-time), while departures around 4 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to IDA?
- The scheduled SLC–IDA flight time averages 1h 4m over 189 miles. Actual arrival times vary — flights on this route land 15+ minutes late 12% of the time.
- How often are SLC to IDA flights cancelled?
- 0.2% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to IDA?
- December 2024 was the roughest month in this dataset, with only 80% of arrivals on time. The best was October 2024 at 99%. If your dates are flexible, that 19-point gap is worth planning around.
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Based on 2,238 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.