BOI (Boise) to PHX (Phoenix) flights arrive on time 85% of the time. The most reliable airline on this route is Southwest Airlines at 87%. The average delay is 73 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated August 2026.BOI → PHX
BOI (Boise) to PHX (Phoenix)
BOI → PHX on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 85% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Southwest Airlines edges out American Airlines on this route — 87% vs 82% on time.
Airline Comparison
Southwest Airlines leads at 87% on time; American Airlines trails at 82%.
Accurate?
Good to know
Departing from BOI
83% on timeExpect ~18 min sitting on the taxiway after your gate pushes back. BOI has long runway queues.
TSA is currently ~21 min. Best time: 4 AM (about 5 min).
Arriving at PHX
82% on timeWhen flights into PHX are late, the average delay is 69 minutes. Build buffer if you have ground plans.
If connecting at PHX: TSA is ~9 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of BOI? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated August 2026. Source: Bureau of Transportation Statistics.