Best Time to Fly BIL to DEN: On-Time Stats by Hour & Airline
Billings Logan International → Denver International
Data through July 2026 · Last updated October 18, 2026
1,778 flights were scheduled from Billings (BIL) to Denver (DEN) in the last 12 months, and 82.2% of those that flew arrived on time, 4.6 points above the US average of 77.6%.
Among 2 airlines, United Airlines led with 82.9% on time and SkyWest Airlines was last with 81.7%.
Over 24 months, Wednesday was the most reliable day (83% on time) and July the worst month (71%).
The cancellation rate was 0.7% (US average 1.8%).
BIL 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 |
|---|---|---|---|---|
| United Airlines | 82.9% | 75 min | 0.1% | 729 |
| SkyWest Airlines | 81.7% | 80 min | 1.1% | 1,049 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly BIL to DEN
On-time arrival % by scheduled departure hour (local time), 3,499 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.5% | 0.6% | 342 |
| 6am–7am | 91.0% | 0.0% | 100 |
| 7am–8am | 86.8% | 0.3% | 630 |
| 8am–9am | 78.2% | 0.0% | 87 |
| 10am–11am | 90.1% | 0.8% | 712 |
| 1pm–2pm | Limited data | 8 | |
| 2pm–3pm | 72.4% | 0.1% | 719 |
| 4pm–5pm | 57.4% | 1.4% | 218 |
| 5pm–6pm | 70.4% | 2.5% | 612 |
| 6pm–7pm | 68.6% | 1.4% | 71 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on BIL 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) | 74.5% | -7.0 pts | 0.0% | 55 |
| Christmas & New Year (Dec 20 - Jan 3) | 87.5% | +5.9 pts | 0.0% | 120 |
| Summer peak (Jun 15 - Aug 15) | 73.4% | -8.2 pts | 0.8% | 711 |
| All other days | 81.6% | — | 0.9% | 2,613 |
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).