BOI to SAN flight delays & on-time performance
Nonstop flights from Boise Air Terminal/Gowen Field to San Diego International Airport · 749 miles · Aug 2025 – Jul 2026
- SAN: Airport closed. Closed, expected to reopen Oct 11 at 13:00 UTC.
On-time arrivals
81%
arrived < 15 min late
Cancelled
0.6%
6 flights
Avg arrival delay
11 min
49 min when late
Airlines
3
1,028 flights tracked
Key facts
- Flights from Boise (BOI) to San Diego (SAN) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.6% were cancelled, and 5% arrived an hour or more late.
- Alaska Airlines was the most punctual airline here (89% on time); Southwest Airlines was the least (75%).
- Departures scheduled around 8am did best (97% on time); around 6pm did worst (59%).
- Saturday was the most reliable day to fly (91% on time) and Friday the least (75%).
- The largest source of delay minutes was late-arriving aircraft (43%).
Which airline is most on time from BOI to SAN?
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 |
|---|---|---|---|---|---|
| Alaska Airlines | 89% | 1.1% | 5 min | 1.5% | 263 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 81% | 0.5% | 12 min | 5.4% | 374 |
| Southwest Airlines | 75% | 0.3% | 13 min | 5.7% | 391 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am92%77 flights
- 7am88%313 flights
- 8am97%71 flights
- 12pm79%75 flights
- 1pm82%73 flights
- 2pm79%24 flights
- 3pm67%24 flights
- 4pm55%23 flights
- 5pm63%34 flights
- 6pm59%49 flights
- 7pm78%186 flights
- 8pm74%48 flights
- 9pm50%26 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday81%0.0% cancelled
- Tuesday76%0.0% cancelled
- Wednesday89%0.8% cancelled
- Thursday78%0.6% cancelled
- Friday75%1.8% cancelled
- Saturday91%0.8% cancelled
- Sunday76%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 aircraft43%
- Air traffic control & airport congestion28%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather83%
- Air traffic control & airport congestion17%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
BOI to SAN: common questions
- How often are BOI to SAN 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 Boise to San Diego cancelled?
- 0.6% of scheduled flights were cancelled (6 of 1,028).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 4.5% of flights were an hour or more late.
- How long is taxi time at BOI?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAN to BOI — 79% on time
More flights from Boise
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOI → SAN, nonstop flights by US airlines that report to the DOT. How we calculate this.