Bozeman (BZN) to Chicago (ORD): On-Time Performance
Data through July 2026
The calendar drives reliability on BZN–ORD. May 2025 flights landed on schedule 97% of the time, but July 2024 dropped to 63% — a gap of 34 points. Across the full period the route averages 75% on-time against a national 78%.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 25 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 3.5
- last 12 months
- Duration
- 3h 8m
- scheduled
- Distance
- 1,185 mi
Best airline from BZN to ORD
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 81% | 17 min | 1.3% | 1,267 |
| SkyWest Airlines | 80% | 11 min | 0.0% | 217 |
| Envoy Air | 76% | 15 min | 0.0% | 86 |
| American Airlines | 63% | 42 min | 0.5% | 776 |
Monthly on-time trend
Best time to fly from BZN to ORD
Aim for departures around 7 a.m. (92% on-time); avoid 1 p.m. departures (57%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 19 min |
| Tuesdaybest | 81% | 14 min |
| Wednesday | 75% | 26 min |
| Thursday | 77% | 19 min |
| Friday | 72% | 42 min |
| Saturday | 76% | 25 min |
| Sunday | 69% | 28 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft36%
- Airline operations32%
- National airspace system28%
- Weather4%
Frequently asked questions
- How often are flights from BZN to ORD delayed?
- 25% of BZN–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 25 minutes.
- Which airline is most reliable from BZN to ORD?
- United Airlines has the best on-time record on this route at 81%, based on 1,267 flights. 4 airlines flew BZN–ORD frequently enough to compare in this period.
- What is the best time of day to fly from BZN to ORD?
- Departures around 7 a.m. have the best record (92% on-time), while departures around 1 p.m. have the worst (57%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BZN to ORD?
- The scheduled BZN–ORD flight time averages 3h 8m over 1,185 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BZN to ORD flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BZN to ORD?
- July 2024 was the roughest month in this dataset, with only 63% of arrivals on time. The best was May 2025 at 97%. If your dates are flexible, that 34-point gap is worth planning around.
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Based on 2,346 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.