Denver (DEN) to Williston (XWA): On-Time Performance
Data through July 2026
The calendar drives reliability on DEN–XWA. September 2024 flights landed on schedule 89% of the time, but January 2025 dropped to 65% — a gap of 25 points. Across the full period the route averages 77% on-time against a national 78%.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 3.8
- last 12 months
- Duration
- 1h 56m
- scheduled
- Distance
- 582 mi
Monthly on-time trend
Best time to fly from DEN to XWA
Aim for departures around 8 a.m. (93% on-time); avoid 3 p.m. departures (56%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 76% | 18 min |
| Tuesdaybest | 79% | 18 min |
| Wednesday | 77% | 21 min |
| Thursday | 77% | 14 min |
| Friday | 77% | 20 min |
| Saturday | 79% | 23 min |
| Sunday | 73% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft32%
- Airline operations38%
- National airspace system15%
- Weather14%
- Security2%
Frequently asked questions
- How often are flights from DEN to XWA delayed?
- 23% of DEN–XWA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 19 minutes.
- What is the best time of day to fly from DEN to XWA?
- Departures around 8 a.m. have the best record (93% on-time), while departures around 3 p.m. have the worst (56%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from DEN to XWA?
- The scheduled DEN–XWA flight time averages 1h 56m over 582 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are DEN to XWA flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from DEN to XWA?
- January 2025 was the roughest month in this dataset, with only 65% of arrivals on time. The best was September 2024 at 89%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 2,914 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.