MSP to MSO flight delays
Minneapolis, MN (MSP) Missoula, MT (MSO) · 1,013 miles
489 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
76.91%
Arrived on time
Within 15 minutes of schedule
0.41%
Cancelled
Share of scheduled flights
64 min
When late, late by
Average across delayed arrivals
16 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In September it ran 46.6 points more punctual than in March — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The two directions do not behave alike. MSO to MSP arrives on time 13.6 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The route has been getting worse. The later months run 11.6 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
Only Delta Air Lines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, Delta Air Lines arrived on time most often on MSP to MSO. Flights ran closest to schedule in September and worst in March.
Every airline on MSP to MSO
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 489 | 76.91% | 0.41% | 64 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MSO to MSP Missoula back to Minneapolis 90.52% on time AOther routes from Minneapolis
Common questions
Are flights from Minneapolis to Missoula usually delayed?
76.91% of flights on the MSP to MSO route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Minneapolis to Missoula?
Only Delta Air Lines appears in the published record on this route, with 489 flights and 76.91% arriving on time.
How often are MSP to MSO flights cancelled?
0.41% of scheduled flights did not operate — about 4 in every thousand. That is in the normal range.
What is the best month to fly Minneapolis to Missoula?
September, when 94.9% of flights arrived on time. The worst was March at 48.3%.
When MSP to MSO flights are late, how late are they?
About 64 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on MSP to MSO during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →