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Route on-time record

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

Boise (Boise Air Terminal/Gowen Field) to Oakland (Oakland San Francisco Bay Airport). 599 nonstop flights in Jun 2025 to May 2026, 86% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was Southwest 1209 at 2:15 PM.

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

BOI → OAK

Boise to Oakland: 599 nonstop flights a year

On time (12 months)

86%

Cancelled

0.3%

avg delay 9 min

Best time to leave

9 AM to noon

94% on time vs 73% 6 to 9 PM

Most reliable airline

Southwest

86% chance on time

Check BOI to OAK 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 · Southwest 1209

    2:15 PM → 3:00 PM1h 45m nonstop

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

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    5 min
    • Arrived on time 89% of the time (28 flights, Jun 2025 to May 2026).
    • Short track record (28 flights), so its score leans on the airline's record at this hour.

    Limited track record · 28 flights

    Find Southwest 1209 fares Opens this date on Aviasales

  2. #2 · Southwest 855

    2:00 PM → 2:45 PM1h 45m nonstop

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

    84%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    16 min
    • Arrived on time 82% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • 55% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (55 flights), so its score leans on the airline's record at this hour.

    Limited track record · 55 flights

    Find Southwest 855 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • Southwest Airlines86%

    599 flights · 86% on time as flown · 0.3% cancel

On time by departure time

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

  • Before 9 AM94%

    32 flights · avg delay 14 min

  • 9 AM to noon94%

    281 flights · avg delay 4 min

  • Noon to 3 PM85%

    46 flights · avg delay 12 min

  • 3 to 6 PM82%

    84 flights · avg delay 10 min

  • 6 to 9 PM73%

    155 flights · avg delay 16 min

Best day: Saturday (90%). Worst: Monday (82%).

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
86
F
84
M
87
A
90
M
88
J
78
J
78
A
83
S
93
O
89
N
89
D
86

What delays this route

  • Late-arriving aircraft68%
  • Airline (crew, maintenance, boarding)31%
  • Air traffic control and airport volume2%

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 BOI to OAK…

BOI to OAK questions

What time of day is best to fly BOI to OAK?
9 AM to noon: 94% of flights arrived on time, against 73% for departures 6 to 9 PM.
Which airline is most on time from BOI to OAK?
Southwest, with a season-adjusted 86% chance of operating and arriving on time over 599 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 BOI to OAK?
June (78% on time); the best was September (93%), 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 BOI

Live status: FAA delays and ground stops