Chicago (ORD) to Bismarck/Mandan (BIS): On-Time Performance
Data through May 2026
Chicago (ORD) to Bismarck/Mandan (BIS) 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, 83% arrived on time.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.0%
- Flights/day
- 0.74
- last 12 months
- Duration
- 2h 33m
- scheduled
- Distance
- 715 mi
Monthly on-time trend
Best time to fly from ORD to BIS
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 12 min |
| Tuesday | 79% | 13 min |
| Wednesday | 79% | 14 min |
| Thursday | 85% | 5 min |
| Fridaybest | 87% | 11 min |
| Saturday | 82% | 9 min |
| Sunday | 82% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations22%
- National airspace system23%
- Weather18%
Frequently asked questions
- How often are flights from ORD to BIS delayed?
- 17% of ORD–BIS 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 11 minutes.
- How long is the flight from ORD to BIS?
- The scheduled ORD–BIS flight time averages 2h 33m over 715 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are ORD to BIS flights cancelled?
- 0% 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 ORD to BIS?
- Friday flights have the best record at 87% on-time. Day-of-week differences on this route are meaningful — Tuesday trails at 79%.
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Based on 270 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.