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Route on-time record

ORD to FCA: most on-time flights and the best time to fly

Chicago (Chicago O'Hare International Airport) to Kalispell (Glacier Park International Airport). 578 nonstop flights in Jun 2025 to May 2026, 71% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was United 2333 at 8:40 AM.

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ORD → FCA

Chicago to Kalispell: 578 nonstop flights a year

On time (12 months)

71%

Cancelled

1.2%

avg delay 23 min

Best time to leave

Before 9 AM

84% on time vs 51% 6 to 9 PM

Most reliable airline

United

81% chance on time

Check ORD to FCA 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 2333

    8:40 AM → 11:29 AM3h 49m nonstop

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

    88%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    20 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 84% on time; 6 to 9 PM: 51%).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).
    • 79% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find United 2333 fares Opens this date on Aviasales

  2. #2 · American 1833

    9:45 AM → 12:35 PM3h 50m nonstop

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

    67%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    18 min
    • Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).
    • 95% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find American 1833 fares Opens this date on Aviasales

  3. #3 · American 1844

    1:16 PM → 4:03 PM3h 47m nonstop

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

    57%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    29 min
    • Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside ORD's trouble window (2 PM to 8 PM, when 43% of its 237 ground stops and delay programs started).
    • 58% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 11 flights

    Find American 1844 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines81%

    177 flights · 85% on time as flown · 0.6% cancel

  • American Airlines66%

    237 flights · 66% on time as flown · 1.0% cancel

On time by departure time

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

  • Before 9 AM84%

    189 flights · avg delay 10 min

  • 9 AM to noon71%

    194 flights · avg delay 21 min

  • Noon to 3 PM52%

    104 flights · avg delay 38 min

  • 3 to 6 PM76%

    37 flights · avg delay 16 min

  • 6 to 9 PM51%

    54 flights · avg delay 62 min

Best day: Tuesday (85%). Worst: Sunday (71%).

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
71
F
-
M
67
A
-
M
83
J
71
J
71
A
78
S
85
O
79
N
-
D
72

What delays this route

  • Airline (crew, maintenance, boarding)49%
  • Late-arriving aircraft29%
  • Air traffic control and airport volume18%
  • Severe weather3%

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 ORD to FCA…

ORD to FCA questions

What time of day is best to fly ORD to FCA?
Before 9 AM: 84% of flights arrived on time, against 51% 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 ORD to FCA?
United, with a season-adjusted 81% chance of operating and arriving on time over 177 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 ORD to FCA?
March (67% on time); the best was September (85%), 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.

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Live status: FAA delays and ground stops