Best Time to Fly DEN to XWA: On-Time Stats by Hour & Airline
Denver International → Williston Basin International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 78.0% of Denver (DEN) to Williston (XWA) flights arrived on time (1,370 scheduled flights). That is in line with the national average of 77.6%.
SkyWest Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Saturday was the most reliable day (80% on time) and June the worst month (67%).
The cancellation rate was 1.2% (US average 1.8%).
DEN to XWA 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 | 78.0% | 87 min | 1.2% | 1,370 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to XWA
On-time arrival % by scheduled departure hour (local time), 2,813 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 83.3% | 0.3% | 335 |
| 8am–9am | 92.9% | 0.0% | 56 |
| 9am–10am | 66.7% | 0.0% | 39 |
| 10am–11am | 68.8% | 0.0% | 77 |
| 11am–12pm | 78.1% | 0.6% | 652 |
| 1pm–2pm | 81.8% | 0.8% | 400 |
| 2pm–3pm | 82.1% | 2.9% | 208 |
| 3pm–4pm | 55.6% | 0.0% | 37 |
| 4pm–5pm | 61.0% | 1.4% | 141 |
| 7pm–8pm | 62.2% | 1.2% | 257 |
| 8pm–9pm | 82.7% | 3.0% | 262 |
| 9pm–10pm | 80.2% | 1.4% | 349 |
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 XWA
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) | 73.5% | -5.2 pts | 0.0% | 49 |
| Christmas & New Year (Dec 20 - Jan 3) | 78.6% | -0.1 pts | 0.0% | 106 |
| Summer peak (Jun 15 - Aug 15) | 72.8% | -6.0 pts | 0.6% | 531 |
| All other days | 78.7% | — | 1.4% | 2,127 |
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).