PHX to BOI flight delays & on-time performance
Nonstop flights from Phoenix Sky Harbor International Airport to Boise Air Terminal/Gowen Field · 735 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHX or BOI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Phoenix (PHX) to Boise (BOI) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.3% were cancelled, and 5% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (84% on time); Envoy Air was the least (77%).
- Departures scheduled around 8am did best (90% on time); around 10pm did worst (61%).
- Saturday was the most reliable day to fly (85% on time) and Sunday the least (78%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (45%).
Which airline is most on time from PHX to BOI?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Alaska Airlines | 100% | 0.0% | 2 min | 0.0% | 5 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 84% | 0.4% | 12 min | 4.8% | 1,025 |
| Southwest Airlines | 78% | 0.4% | 12 min | 5.1% | 813 |
| Envoy AirRegional airline operating American Eagle flights. | 77% | 0.0% | 9 min | 1.7% | 116 |
| American Airlines | 70% | 0.0% | 19 min | 8.9% | 56 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am90%51 flights
- 8am90%149 flights
- 9am85%225 flights
- 10am81%296 flights
- 11am84%132 flights
- 12pm74%38 flights
- 1pm85%157 flights
- 2pm85%266 flights
- 3pm85%63 flights
- 4pm81%138 flights
- 5pm63%73 flights
- 7pm71%78 flights
- 8pm72%174 flights
- 9pm75%108 flights
- 10pm61%61 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%0.7% cancelled
- Tuesday82%0.4% cancelled
- Wednesday81%0.7% cancelled
- Thursday80%0.0% cancelled
- Friday80%0.3% cancelled
- Saturday85%0.0% cancelled
- Sunday78%0.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)45%
- Late-arriving aircraft40%
- Air traffic control & airport congestion8%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion43%
- Airline (crew, maintenance, cleaning, fueling)29%
- Extreme weather29%
- Security0%
PHX to BOI: common questions
- How often are PHX to BOI flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Phoenix to Boise cancelled?
- 0.3% of scheduled flights were cancelled (7 of 2,015).
- How long are typical delays?
- Across all flights the average arrival delay was 12 min (early arrivals count as zero). Flights that were late arrived 56 min behind schedule on average, and 4.8% of flights were an hour or more late.
- How long is taxi time at PHX?
- Flights on this route spent 17 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOI to PHX — 84% on time
More flights from Phoenix
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHX → BOI, nonstop flights by US airlines that report to the DOT. How we calculate this.