Best Time to Fly BIS to DEN: On-Time Stats by Hour & Airline
Bismarck Municipal → Denver International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 79.7% of Bismarck/Mandan (BIS) to Denver (DEN) flights arrived on time (1,466 scheduled flights). That is 2.1 points above the national 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 (79% on time) and January the worst month (68%).
The cancellation rate was 0.6% (US average 1.8%).
BIS to DEN 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 | 79.7% | 112 min | 0.6% | 1,466 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BIS to DEN
On-time arrival % by scheduled departure hour (local time), 2,977 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 85.0% | 1.6% | 305 |
| 6am–7am | 89.3% | 0.0% | 402 |
| 7am–8am | Limited data | 3 | |
| 8am–9am | 69.7% | 1.3% | 298 |
| 9am–10am | 75.1% | 0.2% | 428 |
| 11am–12pm | 88.2% | 0.8% | 120 |
| 1pm–2pm | 86.3% | 0.6% | 637 |
| 2pm–3pm | 83.1% | 0.0% | 89 |
| 5pm–6pm | 60.7% | 1.4% | 592 |
| 6pm–7pm | 64.6% | 1.0% | 99 |
| 9pm–10pm | 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 BIS to DEN
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) | 63.0% | -15.4 pts | 0.0% | 54 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.3% | -5.0 pts | 0.0% | 120 |
| Summer peak (Jun 15 - Aug 15) | 76.6% | -1.7 pts | 0.4% | 534 |
| All other days | 78.4% | — | 1.0% | 2,269 |
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).