BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
XWA→DEN

Williston, ND (XWA) to Denver, CO (DEN) flight delay odds

74.3% of 1,414 official scheduled XWA-to-DEN flights arrived on time; 17.6% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
74.3%arrived on time
17.6%30+ min late
1.4%cancelled
1,414scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.6%all scheduled flights
120+ minutes late6.8%all scheduled flights
Diverted0.9%did not reach as scheduled
Average arrival+16.0 mincompleted flights

Which departure time was most reliable for XWA to DEN?

Among qualifying XWA-to-DEN departure window results, Early morning had the highest on-time rate: 83.7% of 443 flights. Evening was lowest at 61.3% across 287 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning44383.7%10.2%1.4%
Late morning32078.1%14.7%0.6%
Afternoon36469.5%22.0%0.8%
Evening28761.3%26.8%3.1%

Which weekday was most reliable for XWA to DEN?

Among qualifying XWA-to-DEN weekday results, Wednesday had the highest on-time rate: 80.5% of 205 flights. Monday was lowest at 69.0% across 210 flights.

DayFlightsOn time30+ minCancelled
Monday21069.0%20.0%1.0%
Tuesday21475.2%17.3%0.9%
Wednesday20580.5%16.1%0.5%
Thursday20570.7%19.0%2.0%
Friday21172.0%14.7%2.8%
Saturday16376.1%17.8%1.8%
Sunday20676.7%18.4%1.0%

Which airline was most reliable for XWA to DEN?

Only SkyWest Airlines met the XWA-to-DEN airline threshold: 74.3% of 1,414 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,41474.3%17.6%1.4%

Which month was most reliable for XWA to DEN?

Among qualifying XWA-to-DEN month results, September 2025 had the highest on-time rate: 86.1% of 137 flights. December 2025 was lowest at 59.5% across 116 flights.

MonthFlightsOn time30+ minCancelled
July 202515464.9%23.4%1.3%
August 202515072.0%19.3%1.3%
September 202513786.1%10.9%0.0%
October 202512082.5%11.7%0.0%
November 202511280.4%10.7%2.7%
December 202511659.5%31.9%0.9%
January 20269672.9%17.7%8.3%
February 20269775.3%19.6%0.0%
March 202611965.5%23.5%2.5%
April 20268774.7%14.9%0.0%
May 202611585.2%10.4%0.9%
June 202611173.9%15.3%0.0%

What drove XWA to DEN delay minutes?

Airline was the largest recorded XWA-to-DEN delay category, accounting for 47.0% of 34,731 BTS-attributed delay minutes during July 2025–June 2026.

Airline47.0%
Late aircraft21.1%
National airspace22.2%
Weather9.6%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.