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

Missoula, MT (MSO) to Denver, CO (DEN) flight delay odds

79.8% of 1,214 official scheduled MSO-to-DEN flights arrived on time; 13.4% arrived at least 30 minutes late and 0.6% 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
79.8%arrived on time
13.4%30+ min late
0.6%cancelled
1,214scheduled 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 late4.2%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+8.0 mincompleted flights

Which departure time was most reliable for MSO to DEN?

Among qualifying MSO-to-DEN departure window results, Early morning had the highest on-time rate: 92.8% of 359 flights. Evening was lowest at 70.6% across 360 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning35992.8%5.0%0.3%
Late morning11785.5%7.7%0.0%
Afternoon37874.6%17.7%0.3%
Evening36070.6%19.2%1.4%

Which weekday was most reliable for MSO to DEN?

Among qualifying MSO-to-DEN weekday results, Sunday had the highest on-time rate: 83.4% of 169 flights. Monday was lowest at 73.4% across 184 flights.

DayFlightsOn time30+ minCancelled
Monday18473.4%19.0%0.0%
Tuesday17483.3%12.1%1.1%
Wednesday16879.2%13.7%1.8%
Thursday16879.8%14.3%0.0%
Friday18177.9%15.5%0.0%
Saturday17082.4%10.6%1.2%
Sunday16983.4%8.3%0.0%

Which airline was most reliable for MSO to DEN?

Among qualifying MSO-to-DEN airline results, United Airlines had the highest on-time rate: 83.6% of 718 flights. SkyWest Airlines was lowest at 74.1% across 474 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines71883.6%11.3%0.3%
SkyWest Airlines47474.1%16.5%1.1%
Frontier Airlines2281.8%18.2%0.0%

Which month was most reliable for MSO to DEN?

Among qualifying MSO-to-DEN month results, April 2026 had the highest on-time rate: 91.1% of 90 flights. August 2025 was lowest at 70.0% across 130 flights.

MonthFlightsOn time30+ minCancelled
July 202513271.2%22.0%0.8%
August 202513070.0%21.5%0.0%
September 20259779.4%13.4%0.0%
October 202512278.7%10.7%0.0%
November 20259189.0%5.5%2.2%
December 20259473.4%18.1%2.1%
January 20269380.6%12.9%2.2%
February 20268390.4%7.2%0.0%
March 20269381.7%12.9%0.0%
April 20269091.1%4.4%0.0%
May 20269381.7%12.9%0.0%
June 20269680.2%12.5%0.0%

What drove MSO to DEN delay minutes?

National airspace was the largest recorded MSO-to-DEN delay category, accounting for 38.3% of 19,800 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.8%
Late aircraft20.7%
National airspace38.3%
Weather10.2%
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.