BOI to AZA flight delays
Boise, ID (BOI) Phoenix, AZ (AZA) · 749 miles
189 flights · July 2024 – July 2026 · US Bureau of Transportation Statistics
76.06%
Arrived on time
Within 15 minutes of schedule
0.53%
Cancelled
Share of scheduled flights
58 min
When late, late by
Average across delayed arrivals
15 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The two directions do not behave alike. AZA to BOI arrives on time 6.3 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.
This route does worse than its own airport. BOI as a whole runs 9.2 points more punctual than these flights, which points at something specific to the route — the time of day it is scheduled, or the aircraft that feed it — rather than the airport.
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.
The Boise to Phoenix route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over July 2024 – July 2026, Allegiant Air arrived on time most often on BOI to AZA. Flights ran closest to schedule in October and worst in March.
Every airline on BOI 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 | 189 | 76.06% | 0.53% | 58 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
AZA to BOI Phoenix back to Boise 82.35% on time BOther routes from Boise
Common questions
Are flights from Boise to Phoenix usually delayed?
76.06% of flights on the BOI 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 Boise to Phoenix?
Only Allegiant Air appears in the published record on this route, with 189 flights and 76.06% arriving on time.
How often are BOI to AZA flights cancelled?
0.53% of scheduled flights did not operate — about 5 in every thousand. That is in the normal range.
When BOI to AZA flights are late, how late are they?
About 58 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 BOI to AZA during July 2024 – July 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 →