Route on-time record
XWA to DEN: most on-time flights and the best time to fly
Williston (Williston Basin International Airport) to Denver (Denver International Airport). 1,453 nonstop flights in Jun 2025 to May 2026, 75% arrived within 15 minutes and 1.5% were cancelled. The most reliable flight number was SkyWest 5367 at 7:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
XWA → DEN
Williston to Denver: 1,453 nonstop flights a year
On time (12 months)
75%
Cancelled
1.5%
avg delay 28 min
Best time to leave
Before 9 AM
85% on time vs 59% 3 to 6 PM
Most reliable airline
SkyWest
74% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 5367 · sold as United Express, Delta Connection, American Eagle or Alaska
7:15 AM → 8:27 AM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 86%
- Cancelled
- 1.6%
- Avg arrival delay
- 22 min
- Arrived on time 86% of the time (356 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 85% on time; 3 to 6 PM: 59%).
Strong track record · 356 flights
Find 7:15 AM flight fares Opens this date on Aviasales#2 · SkyWest 5685 · sold as United Express, Delta Connection, American Eagle or Alaska
10:55 AM → 12:07 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.6%
- Avg arrival delay
- 21 min
- Arrived on time 79% of the time (323 flights, Jun 2025 to May 2026).
Strong track record · 323 flights
Find 10:55 AM flight fares Opens this date on Aviasales#3 · SkyWest 5825 · sold as United Express, Delta Connection, American Eagle or Alaska
6:08 PM → 7:27 PM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-20.
74%
chance on time
- On time (history)
- 82%
- Cancelled
- 5.6%
- Avg arrival delay
- 30 min
- Arrived on time 82% of the time (17 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Limited track record · 17 flights
Find 6:08 PM flight fares Opens this date on Aviasales#4 · SkyWest 5528 · sold as United Express, Delta Connection, American Eagle or Alaska
1:40 PM → 2:50 PM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
- On time (history)
- 72%
- Cancelled
- 1.3%
- Avg arrival delay
- 27 min
- Arrived on time 72% of the time (303 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
Strong track record · 303 flights
Find 1:40 PM flight fares Opens this date on Aviasales#5 · SkyWest 5638 · sold as United Express, Delta Connection, American Eagle or Alaska
6:26 PM → 7:40 PM2h 14m nonstop
Local times, typical schedule. Last flown 2026-05-31.
65%
chance on time
- On time (history)
- 38%
- Cancelled
- 0.0%
- Avg arrival delay
- 48 min
- Arrived on time 38% of the time (8 flights, Jun 2025 to May 2026).
- Lands inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
- 63% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 8 flights
Find 6:26 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)74%
1,453 flights · 75% on time as flown · 1.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM85%
473 flights · avg delay 24 min
- 9 AM to noon79%
325 flights · avg delay 21 min
- Noon to 3 PM73%
156 flights · avg delay 26 min
- 3 to 6 PM59%
333 flights · avg delay 44 min
- 6 to 9 PM74%
166 flights · avg delay 21 min
Best day: Saturday (79%). Worst: Monday (75%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)43%
- Air traffic control and airport volume25%
- Late-arriving aircraft22%
- Severe weather9%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
XWA to DEN questions
- What time of day is best to fly XWA to DEN?
- Before 9 AM: 85% of flights arrived on time, against 59% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from XWA to DEN?
- SkyWest, with a season-adjusted 74% chance of operating and arriving on time over 1,453 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on XWA to DEN?
- July (72% on time); the best was September (87%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from XWA
Live status: FAA delays and ground stops