IDA to AZA flight delays
Idaho Falls, ID (IDA) Phoenix, AZ (AZA) · 705 miles
221 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
77.73%
Arrived on time
Within 15 minutes of schedule
0.45%
Cancelled
Share of scheduled flights
98 min
When late, late by
Average across delayed arrivals
23 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In August it ran 33.5 points more punctual than in December — 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 route has been getting worse. The later months run 11.9 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
The two directions do not behave alike. AZA to IDA arrives on time 6.4 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only Allegiant Air flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, Allegiant Air arrived on time most often on IDA to AZA. Flights ran closest to schedule in August and worst in December.
Every airline on IDA to AZA
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 |
|---|---|---|---|---|---|
| Allegiant Air | 221 | 77.73% | 0.45% | 98 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
AZA to IDA Phoenix back to Idaho Falls 84.09% on time BCommon questions
Are flights from Idaho Falls to Phoenix usually delayed?
77.73% of flights on the IDA to AZA 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 airlines fly from Idaho Falls to Phoenix?
Only Allegiant Air appears in the published record on this route, with 221 flights and 77.73% arriving on time.
How often are IDA to AZA flights cancelled?
0.45% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
What is the best month to fly Idaho Falls to Phoenix?
August, when 95% of flights arrived on time. The worst was December at 61.5%.
When IDA to AZA flights are late, how late are they?
About 98 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 AZA 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 →