MSO to SLC flight delays & on-time performance
Nonstop flights from Missoula Montana Airport to Salt Lake City International Airport · 436 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MSO or SLC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Missoula (MSO) to Salt Lake City (SLC) arrived on time 91% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.9% were cancelled, and 3% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (92% on time); Delta Air Lines was the least (90%).
- Departures scheduled around 1pm did best (93% on time); around 6pm did worst (91%).
- Monday was the most reliable day to fly (96% on time) and Wednesday the least (86%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (54%).
Which airline is most on time from MSO to SLC?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 92% | 1.4% | 5 min | 1.9% | 592 |
| Delta Air Lines | 90% | 0.4% | 13 min | 3.9% | 467 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am91%360 flights
- 12pm87%31 flights
- 1pm93%323 flights
- 6pm91%340 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday96%0.0% cancelled
- Tuesday93%0.0% cancelled
- Wednesday86%2.0% cancelled
- Thursday90%0.7% cancelled
- Friday91%1.3% cancelled
- Saturday90%1.4% cancelled
- Sunday95%1.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)54%
- Extreme weather20%
- Late-arriving aircraft18%
- Air traffic control & airport congestion7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion60%
- Airline (crew, maintenance, cleaning, fueling)20%
- Extreme weather20%
- Security0%
MSO to SLC: common questions
- How often are MSO to SLC flights on time?
- 91% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Missoula to Salt Lake City cancelled?
- 0.9% of scheduled flights were cancelled (10 of 1,059).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 89 min behind schedule on average, and 2.8% of flights were an hour or more late.
- How long is taxi time at MSO?
- Flights on this route spent 19 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to MSO — 89% on time
More flights from Missoula
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: MSO → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.