Best Time to Fly ORD to MTJ: On-Time Stats by Hour & Airline
Chicago O'Hare International → Montrose Regional
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 72.5% of Chicago (ORD) to Montrose/Delta (MTJ) flights arrived on time (151 scheduled flights). That is 5.1 points below the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
July has been the best month (81% on time) and Saturday the weakest day of the week (67%).
1.3% of flights were cancelled, versus 1.8% nationally.
ORD to MTJ 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 |
|---|---|---|---|---|
| SkyWest Airlines | 72.5% | 74 min | 1.3% | 151 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ORD to MTJ
On-time arrival % by scheduled departure hour (local time), 288 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 69.0% | 0.0% | 71 |
| 9am–10am | 78.1% | 0.9% | 217 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ORD to MTJ
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) | Limited data | 29 | ||
| Summer peak (Jun 15 - Aug 15) | 81.5% | +8.1 pts | 0.0% | 65 |
| All other days | 73.4% | — | 1.0% | 194 |
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).