Which airline is most reliable for MSO (Missoula) to DEN (Denver)?

The most reliable airline on the MSO to DEN route is United Airlines, with an on-time arrival rate of 83%.

How often are flights delayed from MSO to DEN?

About 20% of flights from MSO to DEN experience delays. 80% arrive on time.

What's the average delay on MSO to DEN flights?

When flights from MSO to DEN are delayed, the average delay is approximately 89 minutes.

Is a short connection safe after a MSO to DEN flight?

With 80% of MSO to DEN flights arriving on time and an average delay of 89 minutes when late, a connection under 60 minutes at DEN is risky. We recommend at least 75-90 minutes for domestic connections after this route.

MSO → DEN

MSO (Missoula) to DEN (Denver)

MSO (Missoula) to DEN (Denver) flights arrive on time 80% of the time. The most reliable airline on this route is United Airlines at 83%. The average delay is 89 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated August 2026.

MSO → DEN on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

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This route is on time most of the time. About 80% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

United Airlines is significantly more reliable on this route at 83% on time vs Frontier Airlines at 65%.

Airline Comparison

United Airlines leads at 83% on time; Frontier Airlines trails at 65%.

Accurate?

Good to know

Departing from MSO

82% on time

Expect ~19 min sitting on the taxiway after your gate pushes back. MSO has long runway queues.

TSA is currently ~14 min. Best time: 4 AM (about 5 min).

More about MSO →

Arriving at DEN

79% on time

When flights into DEN are late, the average delay is 69 minutes. Build buffer if you have ground plans.

If connecting at DEN: TSA is ~19 min right now. Allow at least 60 minutes for a domestic connection.

More about DEN →Connection times at DEN →

Flight cancelled or delayed?

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MSO Airport DEN Airport

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Data last updated August 2026. Source: Bureau of Transportation Statistics.