SNA to MSO flight delays & on-time performance
Nonstop flights from John Wayne Orange County International Airport to Missoula Montana Airport · 935 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SNA or MSO right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Santa Ana (SNA) to Missoula (MSO) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 7% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Friday was the most reliable day to fly (86% on time) and Monday the least (85%).
- The largest source of delay minutes was late-arriving aircraft (70%).
Which airline is most on time from SNA 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 |
|---|---|---|---|---|---|
| Allegiant Air | 85% | 0.0% | 13 min | 7.4% | 27 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 9am100%15 flights
- 10am67%12 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday85%0.0% cancelled
- Friday86%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 aircraft70%
- Air traffic control & airport congestion21%
- Airline (crew, maintenance, cleaning, fueling)8%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SNA to MSO: common questions
- How often are SNA to MSO flights on time?
- 85% 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 Santa Ana to Missoula cancelled?
- 0.0% of scheduled flights were cancelled (0 of 27).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 70 min behind schedule on average, and 7.4% of flights were an hour or more late.
- How long is taxi time at SNA?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MSO to SNA — 56% on time
More flights from Santa Ana
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SNA → MSO, nonstop flights by US airlines that report to the DOT. How we calculate this.