Bismarck/Mandan (BIS) to Chicago (ORD): On-Time Performance
Data through May 2026
Bismarck/Mandan (BIS) to Chicago (ORD) is a thinner route than most in this dataset — 270 departures over the past year, roughly 5 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 73% arrived on time, noticeably below the national average of 78%.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 0.4%
- Flights/day
- 0.74
- last 12 months
- Duration
- 2h 20m
- scheduled
- Distance
- 715 mi
Monthly on-time trend
Best time to fly from BIS to ORD
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 65% | 21 min |
| Tuesday | 76% | 13 min |
| Wednesday | 68% | 22 min |
| Thursday | 74% | 25 min |
| Fridaybest | 85% | 13 min |
| Saturday | 80% | 18 min |
| Sunday | 64% | 26 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft57%
- Airline operations15%
- National airspace system20%
- Weather7%
- Security1%
Frequently asked questions
- How often are flights from BIS to ORD delayed?
- 27% of BIS–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 20 minutes.
- How long is the flight from BIS to ORD?
- The scheduled BIS–ORD flight time averages 2h 20m over 715 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are BIS to ORD flights cancelled?
- 0.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What day of the week is most reliable for BIS to ORD?
- Friday flights have the best record at 85% on-time. Day-of-week differences on this route are meaningful — Sunday trails at 64%.
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Based on 270 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.