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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.

SJC → ORD

San Jose to Chicago: 301 nonstop flights a year

On time (12 months)

92%

Cancelled

1.0%

avg delay 6 min

Best time to leave

No clear winner

Most reliable airline

United

91% chance on time

Check SJC to ORD 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 · United 1692

    10:55 PM → 5:14 AM4h 19m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    91%

    chance on time

    On time (history)
    92%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 92% of the time (24 flights, Jun 2025 to May 2026).
    • 87% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find United 1692 fares Opens this date on Aviasales

  2. #2 · United 1317

    6:30 AM → 12:56 PM4h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2062; its record covers all of them.

    89%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 88% of the time (59 flights, Jun 2025 to May 2026).
    • Never cancelled in 59 scheduled flights.
    • Short track record (59 flights), so its score leans on the airline's record at this hour.

    Limited track record · 59 flights

    Find United 1317 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines91%

    293 flights · 91% on time as flown · 1.0% cancel

On time by departure time

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

  • Before 9 AM91%

    245 flights · avg delay 6 min

  • After 9 PM93%

    40 flights · avg delay 8 min

Best day: Wednesday (95%). Worst: Tuesday (90%).

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