IDA to SLC flight delays
Idaho Falls, ID (IDA) Salt Lake City, UT (SLC) · 189 miles
1,189 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
91.65%
Arrived on time
Within 15 minutes of schedule
0.34%
Cancelled
Share of scheduled flights
106 min
When late, late by
Average across delayed arrivals
10 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 106 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
Flights from Idaho Falls to Salt Lake City are among the most dependable in the record. A route this punctual is usually a short hop between airports with slots to spare.
This route does better than its own airport. Departures from IDA overall run 8.6 points less punctual than this particular one — so whatever congestion IDA has, this route is largely escaping it.
The 2 airlines here are separated by under 5 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over January 2025 – August 2026, SkyWest Airlines arrived on time most often on IDA to SLC. Delta Air Lines was late most often. Flights ran closest to schedule in November and worst in May.
Every airline on IDA to SLC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 872 | 92.88% | 0.11% | 69 min | A |
| Delta Air Lines | 317 | 88.22% | 0.95% | 167 min | A |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
Common questions
Are flights from Idaho Falls to Salt Lake City usually delayed?
91.65% of flights on the IDA to SLC route arrived within 15 minutes of schedule, so roughly 1 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Idaho Falls to Salt Lake City?
SkyWest Airlines, at 92.88% on time across 872 flights. The least punctual on the route was Delta Air Lines at 88.22%.
How often are IDA to SLC flights cancelled?
0.34% of scheduled flights did not operate — about 3 in every thousand. That is in the normal range.
What is the best month to fly Idaho Falls to Salt Lake City?
November, when 100% of flights arrived on time. The worst was May at 86.4%.
When IDA to SLC flights are late, how late are they?
About 106 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on IDA to SLC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →