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Route on-time record

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

San Jose (Norman Y. Mineta San Jose International Airport) to Boise (Boise Air Terminal/Gowen Field). 677 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 0.1% were cancelled. The most reliable flight number was SkyWest 3413 at 7:22 PM.

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

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SJC → BOI

San Jose to Boise: 677 nonstop flights a year

On time (12 months)

87%

Cancelled

0.1%

avg delay 8 min

Best time to leave

9 AM to noon

93% on time vs 80% 3 to 6 PM

Most reliable airline

SkyWest

87% chance on time

Check SJC to BOI fares

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 3413 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:22 PM → 10:07 PM1h 44m nonstop

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

    87%

    chance on time

    On time (history)
    87%
    Cancelled
    0.3%
    Avg arrival delay
    8 min
    • Arrived on time 87% of the time (322 flights, Jun 2025 to May 2026).

    Strong track record · 322 flights

    Find 7:22 PM flight fares Opens this date on Aviasales

  2. #2 · Southwest 1547

    3:40 PM → 6:20 PM1h 40m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    70%

    chance on time

    On time (history)
    43%
    Cancelled
    0.0%
    Avg arrival delay
    23 min
    • Arrived on time 43% of the time (23 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 80% on time; 9 AM to noon: 93%).
    • 79% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (23 flights), so its score leans on the airline's record at this hour.

    Limited track record · 23 flights

    Find Southwest 1547 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)87%

    345 flights · 87% on time as flown · 0.2% cancel

  • Southwest Airlines86%

    332 flights · 86% on time as flown · 0.0% cancel

On time by departure time

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

  • 9 AM to noon93%

    197 flights · avg delay 4 min

  • Noon to 3 PM82%

    46 flights · avg delay 7 min

  • 3 to 6 PM80%

    210 flights · avg delay 12 min

  • 6 to 9 PM87%

    200 flights · avg delay 8 min

Best day: Tuesday (89%). Worst: Thursday (80%).

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
92
F
89
M
86
A
83
M
76
J
77
J
89
A
89
S
84
O
83
N
87
D
81

What delays this route

  • Late-arriving aircraft67%
  • Airline (crew, maintenance, boarding)19%
  • Air traffic control and airport volume10%
  • Severe weather4%

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 SJC to BOI…

SJC to BOI questions

What time of day is best to fly SJC to BOI?
9 AM to noon: 93% of flights arrived on time, against 80% for departures 3 to 6 PM.
Which airline is most on time from SJC to BOI?
SkyWest, with a season-adjusted 87% chance of operating and arriving on time over 345 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 SJC to BOI?
May (76% on time); the best was January (92%), 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 SJC

Live status: FAA delays and ground stops