Idaho Falls (IDA) to Salt Lake City (SLC): On-Time Performance
Data through May 2026
Idaho Falls (IDA) to Salt Lake City (SLC) effectively runs on two schedules. In November 2025, 100% of arrivals were on time; in January 2025 that fell to 81% — a 20-point seasonal swing. Across the full period the route averages 90% on-time against a national 78%.
- On-time
- 90%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.2%
- Flights/day
- 3.2
- last 12 months
- Duration
- 1h 9m
- scheduled
- Distance
- 189 mi
Best airline from IDA to SLC
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% | 1,674 |
| Delta Air Lines | 85% | 21 min | 0.5% | 564 |
Monthly on-time trend
Best time to fly from IDA to SLC
Aim for departures around 11 a.m. (98% on-time); avoid 6 a.m. departures (87%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 91% | 11 min |
| Tuesday | 89% | 10 min |
| Wednesday | 92% | 13 min |
| Thursday | 90% | 11 min |
| Fridaybest | 92% | 12 min |
| Saturday | 90% | 9 min |
| Sunday | 90% | 8 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft2%
- Airline operations72%
- National airspace system7%
- Weather18%
Frequently asked questions
- How often are flights from IDA to SLC delayed?
- 10% of IDA–SLC 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 11 minutes.
- Which airline is most reliable from IDA to SLC?
- SkyWest Airlines has the best on-time record on this route at 92%, based on 1,674 flights. 2 airlines flew IDA–SLC frequently enough to compare in this period.
- What is the best time of day to fly from IDA to SLC?
- Departures around 11 a.m. have the best record (98% on-time), while departures around 6 a.m. have the worst (87%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from IDA to SLC?
- The scheduled IDA–SLC flight time averages 1h 9m over 189 miles. Actual arrival times vary — flights on this route land 15+ minutes late 10% of the time.
- How often are IDA to SLC 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 IDA to SLC?
- January 2025 was the roughest month in this dataset, with only 81% of arrivals on time. The best was November 2025 at 100%. If your dates are flexible, that 20-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.