Best Time to Fly XWA to DEN: On-Time Stats by Hour & Airline
Williston Basin International → Denver International
Data through July 2026 · Last updated October 18, 2026
1,371 flights were scheduled from Williston (XWA) to Denver (DEN) in the last 12 months, and 76.6% of those that flew arrived on time, 1.0 points below the US 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 (79% on time) and December the worst month (69%).
The cancellation rate was 1.3% (US average 1.8%).
XWA 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 | 76.6% | 101 min | 1.3% | 1,371 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly XWA to DEN
On-time arrival % by scheduled departure hour (local time), 2,813 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 78.8% | 0.0% | 34 |
| 6am–7am | 84.5% | 0.0% | 84 |
| 7am–8am | 85.1% | 1.6% | 727 |
| 10am–11am | 76.5% | 1.2% | 82 |
| 11am–12pm | 81.1% | 0.6% | 503 |
| 1pm–2pm | 68.0% | 0.0% | 100 |
| 2pm–3pm | 72.0% | 0.0% | 148 |
| 3pm–4pm | 71.3% | 1.4% | 518 |
| 4pm–5pm | Limited data | 18 | |
| 5pm–6pm | 58.9% | 1.8% | 328 |
| 6pm–7pm | 67.9% | 3.0% | 271 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on XWA 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) | 57.1% | -19.9 pts | 0.0% | 49 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.2% | -6.9 pts | 0.9% | 106 |
| Summer peak (Jun 15 - Aug 15) | 72.4% | -4.7 pts | 0.9% | 531 |
| All other days | 77.1% | — | 1.5% | 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).