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

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

Historically, 75.4% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,413 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
75.4%arrived on time
15.5%30+ min late
1.3%cancelled
1,413scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.8%all scheduled flights
120+ minutes late3.7%all scheduled flights
Diverted1.1%did not reach as scheduled
Average arrival+13.3 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 morning12686.5%4.0%0.0%
Late morning36478.0%14.3%0.8%
Afternoon41673.8%17.1%1.7%
Evening38368.9%19.1%1.8%
Night12481.5%14.5%0.8%

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
Monday21073.8%20.0%0.0%
Tuesday21479.4%14.0%0.9%
Wednesday20578.0%13.7%1.0%
Thursday20474.0%15.7%1.5%
Friday21071.9%15.2%3.3%
Saturday16377.9%12.3%0.0%
Sunday20772.9%16.9%1.9%

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 Airlines1,41375.4%15.5%1.3%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202515470.1%17.5%1.3%
August 202515073.3%16.0%0.0%
September 202513787.6%6.6%0.0%
October 202512085.0%10.8%0.0%
November 202511283.0%7.1%2.7%
December 202511566.1%25.2%0.9%
January 20269772.2%16.5%6.2%
February 20269779.4%13.4%1.0%
March 202611870.3%18.6%3.4%
April 20268875.0%13.6%0.0%
May 202611474.6%17.5%0.9%
June 202611167.6%23.4%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.

Airline34.9%
Late aircraft31.6%
National airspace15.7%
Weather17.8%
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.