Best Time to Fly FCA to ORD: On-Time Stats by Hour & Airline
Glacier Park International → Chicago O'Hare International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 69.6% of Kalispell (FCA) to Chicago (ORD) flights arrived on time (532 scheduled flights). That is 8.0 points below the national average of 77.6%.
Among 3 airlines, United Airlines led with 78.3% on time and American Airlines was last with 58.5%.
Over 24 months, Tuesday was the most reliable day (83% on time) and June the worst month (57%).
The cancellation rate was 0.9% (US average 1.8%).
FCA to ORD on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| United Airlines | 78.3% | 93 min | 0.0% | 165 |
| SkyWest Airlines | 77.4% | 59 min | 3.3% | 120 |
| American Airlines | 58.5% | 111 min | 0.5% | 220 |
| Envoy Air | Limited data | 27 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly FCA to ORD
On-time arrival % by scheduled departure hour (local time), 925 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 75.5% | 3.6% | 112 |
| 11am–12pm | 86.8% | 0.0% | 38 |
| 12pm–1pm | 75.8% | 0.2% | 395 |
| 1pm–2pm | 67.0% | 0.4% | 225 |
| 2pm–3pm | Limited data | 4 | |
| 4pm–5pm | 37.1% | 1.4% | 145 |
| 5pm–6pm | Limited data | 6 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on FCA to ORD
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Christmas & New Year (Dec 20 - Jan 3) | 66.7% | -7.3 pts | 0.0% | 30 |
| Summer peak (Jun 15 - Aug 15) | 59.1% | -14.8 pts | 1.3% | 389 |
| All other days | 74.0% | — | 0.6% | 506 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).