Best Time to Fly DEN to BIS: On-Time Stats by Hour & Airline
Denver International → Bismarck Municipal
Data through July 2026 · Last updated October 18, 2026
1,466 flights were scheduled from Denver (DEN) to Bismarck/Mandan (BIS) in the last 12 months, and 76.3% of those that flew arrived on time, 1.4 points below the US average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (80% on time) and January the worst month (67%).
The cancellation rate was 0.6% (US average 1.8%).
DEN to BIS 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 | 76.3% | 90 min | 0.6% | 1,466 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to BIS
On-time arrival % by scheduled departure hour (local time), 2,978 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 84.6% | 0.8% | 119 |
| 9am–10am | 84.6% | 0.7% | 145 |
| 10am–11am | 81.9% | 0.3% | 583 |
| 1pm–2pm | 79.1% | 0.9% | 656 |
| 2pm–3pm | 76.1% | 0.0% | 71 |
| 5pm–6pm | 66.4% | 0.9% | 579 |
| 6pm–7pm | 57.4% | 1.8% | 56 |
| 7pm–8pm | 74.4% | 2.2% | 92 |
| 8pm–9pm | 72.8% | 1.2% | 482 |
| 9pm–10pm | 79.3% | 3.7% | 191 |
| 11pm–12am | Limited data | 4 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to BIS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 75.5% | -2.4 pts | 0.0% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.4% | -2.5 pts | 0.0% | 120 |
| Summer peak (Jun 15 - Aug 15) | 67.9% | -10.0 pts | 1.1% | 534 |
| All other days | 77.9% | — | 1.1% | 2,270 |
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).