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Route on-time record

PHX to BOI: most on-time flights and the best time to fly

Phoenix (Phoenix Sky Harbor International Airport) to Boise (Boise Air Terminal/Gowen Field). 1,966 nonstop flights in Jun 2025 to May 2026, 81% arrived within 15 minutes and 0.4% were cancelled. The most reliable flight number was SkyWest 3428 at 9:19 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

PHX → BOI

Phoenix to Boise: 1,966 nonstop flights a year

On time (12 months)

81%

Cancelled

0.4%

avg delay 11 min

Best time to leave

Before 9 AM

89% on time vs 69% 6 to 9 PM

Most reliable airline

SkyWest

84% chance on time

Check PHX to BOI fares

Lowest nonstop fare seen in the next two months: $225 (Alaska 2268 on 2026-10-25). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · SkyWest 3428 · sold as United Express, Delta Connection, American Eagle or Alaska

    9:19 AM → 12:45 PM2h 26m nonstop

    Local times, typical schedule. Last flown 2026-03-15.

    89%

    chance on time

    On time (history)
    94%
    Cancelled
    0.0%
    Avg arrival delay
    3 min
    • Arrived on time 94% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find 9:19 AM flight fares Opens this date on Aviasales

  2. #2 · SkyWest 4934 · sold as United Express, Delta Connection, American Eagle or Alaska

    1:54 PM → 5:09 PM2h 15m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    87%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
    • 95% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find 1:54 PM flight fares Opens this date on Aviasales

  3. #3 · SkyWest 6280 · sold as United Express, Delta Connection, American Eagle or Alaska

    2:44 PM → 6:02 PM2h 18m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 87% of the time (146 flights, Jun 2025 to May 2026).
    • Never cancelled in 146 scheduled flights.
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 146 flights

    Find 2:44 PM flight fares Opens this date on Aviasales

  4. #4 · SkyWest 4935 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:30 AM → 12:00 PM2h 30m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    86%

    chance on time

    On time (history)
    83%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 83% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 30 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 6 to 9 PM: 69%).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).

    Limited track record · 30 flights

    Find 8:30 AM flight fares Opens this date on Aviasales

  5. #5 · SkyWest 4966 · sold as United Express, Delta Connection, American Eagle or Alaska

    2:35 PM → 5:53 PM2h 18m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    84%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    34 min
    • Arrived on time 81% of the time (37 flights, Jun 2025 to May 2026).
    • Never cancelled in 37 scheduled flights.
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (37 flights), so its score leans on the airline's record at this hour.

    Limited track record · 37 flights

    Find 2:35 PM flight fares Opens this date on Aviasales

  6. #6 · Envoy 4080 · sold as American Eagle

    10:13 AM → 1:29 PM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    82%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find 10:13 AM flight fares Opens this date on Aviasales

  7. #7 · SkyWest 4912 · sold as United Express, Delta Connection, American Eagle or Alaska

    8:25 PM → 11:41 PM2h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 6449; its record covers all of them.

    81%

    chance on time

    On time (history)
    83%
    Cancelled
    1.1%
    Avg arrival delay
    10 min
    • Arrived on time 83% of the time (183 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 69% on time; Before 9 AM: 89%).
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).

    Moderate track record · 183 flights

    Find 8:25 PM flight fares Opens this date on Aviasales

  8. #8 · Envoy 4093 · sold as American Eagle

    10:19 AM → 1:42 PM2h 23m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    80%

    chance on time

    On time (history)
    77%
    Cancelled
    0.0%
    Avg arrival delay
    7 min
    • Arrived on time 77% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).
    • Short track record (44 flights), so its score leans on the airline's record at this hour.

    Limited track record · 44 flights

    Find 10:19 AM flight fares Opens this date on Aviasales

  9. #9 · SkyWest 6332 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:58 PM → 11:11 PM2h 13m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    78%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    21 min
    • Arrived on time 75% of the time (104 flights, Jun 2025 to May 2026).
    • Never cancelled in 104 scheduled flights.
    • Leaves in this route's least on-time window (6 to 9 PM: 69% on time; Before 9 AM: 89%).
    • Departs inside PHX's trouble window: 43% of its 46 ground stops and delay programs started between 2 PM and 8 PM.

    Moderate track record · 104 flights

    Find 7:58 PM flight fares Opens this date on Aviasales

  10. #10 · Southwest 2179

    9:35 AM → 12:40 PM2h 05m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 183; its record covers all of them.

    78%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 75% of the time (63 flights, Jun 2025 to May 2026).
    • Never cancelled in 63 scheduled flights.
    • Departs outside PHX's trouble window (2 PM to 8 PM, when 43% of its 46 ground stops and delay programs started).

    Moderate track record · 63 flights

    Find Southwest 2179 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)84%

    1,006 flights · 84% on time as flown · 0.6% cancel

  • Envoy Air (sold as American Eagle)81%

    89 flights · 81% on time as flown · 0.3% cancel

  • Southwest Airlines78%

    814 flights · 78% on time as flown · 0.3% cancel

  • American Airlines74%

    52 flights · 67% on time as flown · 0.3% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM89%

    169 flights · avg delay 5 min

  • 9 AM to noon84%

    684 flights · avg delay 9 min

  • Noon to 3 PM84%

    472 flights · avg delay 11 min

  • 3 to 6 PM76%

    223 flights · avg delay 16 min

  • 6 to 9 PM69%

    271 flights · avg delay 16 min

  • After 9 PM78%

    147 flights · avg delay 12 min

Best day: Saturday (85%). Worst: Friday (78%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
82
F
83
M
82
A
84
M
82
J
72
J
77
A
84
S
83
O
82
N
84
D
81

What delays this route

  • Airline (crew, maintenance, boarding)49%
  • Late-arriving aircraft35%
  • Severe weather8%
  • Air traffic control and airport volume8%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from PHX to BOI…

PHX to BOI questions

What time of day is best to fly PHX to BOI?
Before 9 AM: 89% of flights arrived on time, against 69% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from PHX to BOI?
SkyWest, with a season-adjusted 84% chance of operating and arriving on time over 1,006 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on PHX to BOI?
June (72% on time); the best was April (84%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from PHX

Live status: FAA delays and ground stops