SMF to BOI flight delays & on-time performance
Nonstop flights from Sacramento International Airport to Boise Air Terminal/Gowen Field · 437 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SMF or BOI right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Sacramento (SMF) to Boise (BOI) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 4% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 5am did best (100% on time); around 1pm did worst (51%).
- Saturday was the most reliable day to fly (87% on time) and Friday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (65%).
Which airline is most on time from SMF to BOI?
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 |
|---|---|---|---|---|---|
| Southwest Airlines | 81% | 0.0% | 10 min | 4.0% | 860 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am100%26 flights
- 6am100%14 flights
- 7am87%62 flights
- 8am98%51 flights
- 9am95%37 flights
- 10am92%60 flights
- 11am94%64 flights
- 12pm88%32 flights
- 1pm51%39 flights
- 2pm80%20 flights
- 3pm55%53 flights
- 4pm67%39 flights
- 6pm73%30 flights
- 7pm83%83 flights
- 8pm79%154 flights
- 9pm72%96 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%0.0% cancelled
- Tuesday80%0.0% cancelled
- Wednesday87%0.0% cancelled
- Thursday77%0.0% cancelled
- Friday75%0.0% cancelled
- Saturday87%0.0% cancelled
- Sunday80%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 aircraft65%
- Airline (crew, maintenance, cleaning, fueling)26%
- Air traffic control & airport congestion7%
- Extreme weather1%
- Security1%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
SMF to BOI: common questions
- How often are SMF to BOI flights on time?
- 81% 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 Sacramento to Boise cancelled?
- 0.0% of scheduled flights were cancelled (0 of 860).
- How long are typical delays?
- Across all flights the average arrival delay was 10 min (early arrivals count as zero). Flights that were late arrived 41 min behind schedule on average, and 4.0% of flights were an hour or more late.
- How long is taxi time at SMF?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: BOI to SMF — 85% on time
More flights from Sacramento
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SMF → BOI, nonstop flights by US airlines that report to the DOT. How we calculate this.