BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ORD→FCA

Chicago, IL (ORD) to Kalispell, MT (FCA) flight delay odds

71.8% of 585 official scheduled ORD-to-FCA flights arrived on time; 18.3% arrived at least 30 minutes late and 1.0% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
71.8%arrived on time
18.3%30+ min late
1.0%cancelled
585scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.9%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+12.5 mincompleted flights

Which departure time was most reliable for ORD to FCA?

Among qualifying ORD-to-FCA departure window results, Early morning had the highest on-time rate: 83.6% of 189 flights. Evening was lowest at 53.7% across 54 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning18983.6%11.1%0.0%
Late morning19870.7%18.2%0.5%
Afternoon14464.6%23.6%0.7%
Evening5453.7%29.6%7.4%

Which weekday was most reliable for ORD to FCA?

Among qualifying ORD-to-FCA weekday results, Tuesday had the highest on-time rate: 86.7% of 75 flights. Wednesday was lowest at 66.7% across 69 flights.

DayFlightsOn time30+ minCancelled
Monday8769.0%21.8%3.4%
Tuesday7586.7%6.7%1.3%
Wednesday6966.7%20.3%0.0%
Thursday9075.6%11.1%1.1%
Friday8567.1%22.4%0.0%
Saturday9071.1%20.0%1.1%
Sunday8967.4%24.7%0.0%

Which airline was most reliable for ORD to FCA?

Among qualifying ORD-to-FCA airline results, United Airlines had the highest on-time rate: 84.7% of 177 flights. SkyWest Airlines was lowest at 61.0% across 136 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines24569.0%20.0%0.4%
United Airlines17784.7%10.2%0.0%
SkyWest Airlines13661.0%25.0%3.7%
Envoy Air2766.7%22.2%0.0%

Which month was most reliable for ORD to FCA?

Among qualifying ORD-to-FCA month results, September 2025 had the highest on-time rate: 81.1% of 95 flights. March 2026 was lowest at 50.0% across 22 flights.

MonthFlightsOn time30+ minCancelled
July 202512362.6%26.8%1.6%
August 202511576.5%13.0%2.6%
September 20259581.1%12.6%0.0%
October 20255875.9%13.8%0.0%
December 20251553.3%26.7%0.0%
March 20262250.0%36.4%4.5%
May 20263375.8%15.2%0.0%
June 20269675.0%15.6%0.0%

What drove ORD to FCA delay minutes?

Airline was the largest recorded ORD-to-FCA delay category, accounting for 49.9% of 11,538 BTS-attributed delay minutes during July 2025–June 2026.

Airline49.9%
Late aircraft28.0%
National airspace19.8%
Weather2.0%
Security0.4%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.