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

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

Historically, 74.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,414 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

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

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.