SLC to MSO flight delays & on-time performance
Nonstop flights from Salt Lake City International Airport to Missoula Montana Airport · 436 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SLC or MSO right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Salt Lake City (SLC) to Missoula (MSO) arrived on time 89% 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 (85%).
- Departures scheduled around 10am did best (93% on time); around 10pm did worst (83%).
- Saturday was the most reliable day to fly (92% on time) and Wednesday the least (82%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (71%).
Which airline is most on time from SLC to MSO?
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% | 4 min | 1.2% | 592 |
| Delta Air Lines | 85% | 0.4% | 16 min | 5.8% | 467 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am93%335 flights
- 11am96%24 flights
- 3pm89%199 flights
- 4pm92%143 flights
- 9pm86%86 flights
- 10pm83%272 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday89%0.0% cancelled
- Tuesday90%0.0% cancelled
- Wednesday82%2.0% cancelled
- Thursday90%0.7% cancelled
- Friday89%1.3% cancelled
- Saturday92%2.1% cancelled
- Sunday90%0.7% 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)71%
- Extreme weather17%
- Late-arriving aircraft7%
- Air traffic control & airport congestion5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion60%
- Airline (crew, maintenance, cleaning, fueling)20%
- Extreme weather20%
- Security0%
SLC to MSO: common questions
- How often are SLC to MSO flights on time?
- 89% 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 Salt Lake City to Missoula 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 9 min (early arrivals count as zero). Flights that were late arrived 77 min behind schedule on average, and 3.3% of flights were an hour or more late.
- How long is taxi time at SLC?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MSO to SLC — 91% on time
More flights from Salt Lake City
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SLC → MSO, nonstop flights by US airlines that report to the DOT. How we calculate this.