Bozeman (BZN) to Chicago (ORD): On-Time Performance
Data through May 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 76% on-time against a national 78%.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 23 min
- completed flights
- Cancelled
- 0.8%
- Flights/day
- 3.4
- last 12 months
- Duration
- 3h 7m
- scheduled
- Distance
- 1,185 mi
Best airline from BZN to ORD
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 83% | 15 min | 1.1% | 1,137 |
| SkyWest Airlines | 80% | 11 min | 0.0% | 217 |
| Envoy Air | 76% | 15 min | 0.0% | 86 |
| American Airlines | 64% | 43 min | 0.4% | 680 |
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 (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 15 min |
| Tuesdaybest | 80% | 15 min |
| Wednesday | 78% | 23 min |
| Thursday | 78% | 15 min |
| Friday | 74% | 41 min |
| Saturday | 77% | 24 min |
| Sunday | 70% | 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 aircraft39%
- Airline operations34%
- National airspace system24%
- Weather3%
Frequently asked questions
- How often are flights from BZN to ORD delayed?
- 24% of BZN–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 23 minutes.
- Which airline is most reliable from BZN to ORD?
- United Airlines has the best on-time record on this route at 83%, based on 1,137 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 (59%). 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 7m over 1,185 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are BZN to ORD flights cancelled?
- 0.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 2,120 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.