Route
DEN → BIS
Denver International Airport Bismarck Municipal Airport
516 miles
Return route BIS → DEN →
How punctual is this route?
- On-time arrivals
- 76.9%
- Less than 15 minutes late
- Cancelled
- 0.7%
- Of scheduled flights
- Average delay when late
- 90 min
- Flights arriving 15+ minutes late
- Flights tracked
- 1,433
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 42%
- Late-arriving aircraft 34%
- Air traffic control & airport 18%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 78.8% | 137 |
| October 2025 | 81.5% | 120 |
| November 2025 | 92.0% | 116 |
| December 2025 | 69.2% | 122 |
| January 2026 | 72.0% | 119 |
| February 2026 | 78.3% | 106 |
| March 2026 | 80.2% | 120 |
| April 2026 | 77.3% | 119 |
| May 2026 | 81.8% | 121 |
| June 2026 | 76.7% | 116 |
| July 2026 | 66.1% | 118 |
| August 2026 | 69.2% | 119 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| SkyWest Airlines | 1,433 | 76.9% | 0.7% | 90 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
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