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Route · MSO → DEN · 2020–2025 BTS data

Missoula to Denver

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MSO to DEN (Missoula to Denver) ranks #2064 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78.7%
On-time
-0.3 pts
vs US avg
96 min
Delay when late
6,021
Flights
#2064 of 4927
Corpus placement

Cancelled

1.2%

Best Month

Nov 2025 91%

Worst Month

Feb 2025 67%

Distance

679 mi

Carriers

11

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 94 23 2 0 F9,UA,OO
Nov 2025 91 8 2 0 OO,UA,F9
Oct 2025 122 25 0 1 OO,UA,F9
Sep 2025 97 20 0 0 UA,OO
Aug 2025 130 37 0 2 OO,F9,UA
Jul 2025 132 35 1 2 OO,UA,F9
Jun 2025 104 33 1 1 OO,UA,F9
May 2025 94 30 1 2 OO,UA,F9
Apr 2025 90 28 0 1 OO,UA
Mar 2025 88 12 0 1 OO,UA
Feb 2025 78 26 0 0 OO,UA
Jan 2025 85 24 0 0 OO,UA
Dec 2024 93 12 0 0 OO,UA
Nov 2024 90 20 1 0 OO,UA,F9
Oct 2024 101 9 0 0 UA,OO,F9
Sep 2024 102 16 0 0 UA,F9
Aug 2024 139 30 6 0 F9,UA
Jul 2024 139 28 6 1 F9,UA
Jun 2024 111 20 2 1 F9,UA
May 2024 105 23 1 0 F9,OO,UA
Apr 2024 60 10 0 0 UA
Mar 2024 62 12 0 0 UA
Feb 2024 58 15 0 0 UA
Jan 2024 62 17 6 0 UA

MSO–DEN seasonal on-time pattern

Best: March (84.5%) · weakest: December (72.8%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 72.8%

Strongest calendar month

March

84.5% on-time · ~72 flights/mo

Busiest calendar month

July

~115 flights/mo avg

Weakest calendar month

December

72.8% on-time · ~75 flights/mo

Cancellation Rate

1.2%

29 of 2,327 flights

Diversion Rate

0.5%

12 of 2,327 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

MSO - Missoula

Full on-time, delay-cause, and seasonal performance for Missoula, MT.

MSO on-time profile

DEN - Denver

Full on-time, delay-cause, and seasonal performance for Denver, CO.

DEN on-time profile

Compare the two airports

See MSO and DEN side by side on delays, cancellations, and reliability.

Compare MSO vs DEN

Origin-hub reliability standing

Mid-pack among MSO departures

From MSO, this corridor sits with 6 other 75–85% on-time routes out of 8 tracked departures, not the hub's reliability leaders (2 at ≥85%) and not the softest ( 0 below 75%). Destination: Denver · fleet on-time rank #3611 of 4927.

What the Data Says About MSO to DEN

6,021 tracked flights put the MSO to DEN pairing (Missoula to Denver) at a 78.7% on-time rate, squarely in line with the wider network. Delays that do occur run 96.3 minutes on average. Across the 679-mile route and its 11 carriers, the trailing 24 months show 1.2% cancelled and 0.5% diverted (2,327 flights sampled).

The monthly split is wide on this route: Nov 2025 posted the strongest performance at 91% on-time, while Feb 2025 came in at just 67% - a 25-point swing worth factoring into travel timing.

On the multi-year calendar, MSO–DEN peaks in March at 84.5% on-time while July carries the heaviest traffic (~115 flights per month) ; the softest month is December at 72.8%, a 11.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MSO to DEN rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MSO to DEN ranks #2064 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from MSO to DEN? ▼
Flights from Missoula to Denver have a 78.7% on-time rate based on 6,021 flights. The average delay is 96.3 minutes. The best recent month was Nov 2025 with 91% on-time.
What is the cancellation rate for MSO to DEN? ▼
Over the last 24 months, 1.2% of flights on this route were cancelled (29 of 2,327 flights) and 0.5% were diverted.
How far is the flight from MSO to DEN? ▼
The flight distance from Missoula (MSO) to Denver (DEN) is approximately 679 miles. This route is served by 11 carriers.
When is the best time to fly from MSO to DEN? ▼
The best recent month for on-time performance was Nov 2025 (91% on-time). The worst was Feb 2025 (67% on-time). Consider booking during months with historically better performance.

Airports on this route

MSO Airport

Missoula
DEN Airport

Denver
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using MSO–DEN data

MSO–DEN is mid-pack at 78.7% on-time; month and carrier mix move more than the corridor headline.

  • Compare MSO and DEN airport profiles: delay causes and top routes differ even on the same corridor. MSO airport
  • If your dates flex, March (84.5% on-time) beats December (72.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78.7% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.