MSO to LAS flight delays & on-time performance
Nonstop flights from Missoula Montana Airport to Harry Reid International Airport · 750 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at MSO or LAS 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 Las Vegas (LAS) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.8% were cancelled, and 12% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Departures scheduled around 10am did best (95% on time); around 8pm did worst (67%).
- Sunday was the most reliable day to fly (92% on time) and Friday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (58%).
Which airline is most on time from MSO to LAS?
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 |
|---|---|---|---|---|---|
| Allegiant Air | 77% | 1.8% | 19 min | 11.7% | 113 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 10am95%37 flights
- 4pm72%18 flights
- 8pm67%21 flights
- 10pm71%15 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%2.4% cancelled
- Tuesday0%0.0% cancelled
- Wednesday67%0.0% cancelled
- Thursday85%0.0% cancelled
- Friday74%2.5% cancelled
- Saturday50%0.0% cancelled
- Sunday92%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft58%
- Air traffic control & airport congestion24%
- Extreme weather15%
- Airline (crew, maintenance, cleaning, fueling)2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Extreme weather0%
- Security0%
MSO to LAS: common questions
- How often are MSO to LAS flights on time?
- 77% 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 Las Vegas cancelled?
- 1.8% of scheduled flights were cancelled (2 of 113).
- How long are typical delays?
- Across all flights the average arrival delay was 19 min (early arrivals count as zero). Flights that were late arrived 78 min behind schedule on average, and 11.7% of flights were an hour or more late.
- How long is taxi time at MSO?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to MSO — 79% 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 → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.