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ATIS Alerts Smart Flight Search

Find the flight least likely to be delayed

Beta

We rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.

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.

Best trips

2 nonstop. Best overall weighs the chance you arrive on time as booked, connection odds, travel time and separate tickets.

  1. Best overall#1 · Nonstop · 1h 45m

    2:15 PM → 3:00 PM

    87%

    arrive on time

    2:15 PM BOI → 3:00 PM OAK1h 45m

    Southwest 1209

    Boeing 737 MAX 8 or 737-700 · 1–21 yrs old
    87% on time · 0.3% cancel
    Find Southwest 1209 fares Opens this date on Aviasales

  2. #2 · Nonstop · 1h 45m

    2:00 PM → 2:45 PM

    84%

    arrive on time

    2:00 PM BOI → 2:45 PM OAK1h 45m

    Southwest 855

    Boeing 737-700 · 4–22 yrs old
    84% on time · 0.2% cancel
    Find Southwest 855 fares Opens this date on Aviasales

Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes.

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%).

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