IDA to DEN flight delays
Idaho Falls, ID (IDA) Denver, CO (DEN) · 458 miles
1,738 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
79.23%
Arrived on time
Within 15 minutes of schedule
0.75%
Cancelled
Share of scheduled flights
91 min
When late, late by
Average across delayed arrivals
20 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In November it ran 32.4 points more punctual than in July — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
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 91 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.
The 2 airlines here are separated by under 1 point — close enough to call a tie. Choose on price and departure time.
The Idaho Falls to Denver route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, United Airlines arrived on time most often on IDA to DEN. SkyWest Airlines was late most often. Flights ran closest to schedule in November and worst in July.
Every airline on IDA to DEN
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 | 1,536 | 79.41% | 0.78% | 91 min | C |
| United Airlines | 184 | 80.33% | 0% | 103 min | B |
| Allegiant Air | 18 | 50% | 5.56% | 64 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DEN to IDA Denver back to Idaho Falls 80.29% on time CCommon questions
Are flights from Idaho Falls to Denver usually delayed?
79.23% of flights on the IDA to DEN route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Idaho Falls to Denver?
United Airlines, at 80.33% on time across 184 flights. The least punctual on the route was SkyWest Airlines at 79.41%.
How often are IDA to DEN flights cancelled?
0.75% of scheduled flights did not operate — about 8 in every thousand. That is in the normal range.
What is the best month to fly Idaho Falls to Denver?
November, when 90.8% of flights arrived on time. The worst was July at 58.4%.
When IDA to DEN flights are late, how late are they?
About 91 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 DEN 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 →