Historical on-time performance
Boise to San Diego
749 miData through Dec 2025Source: US DOT · BTS
Flights on BOI–SAN arrive on time 85% of the time over the last 12 months.
On-time rate85%arrived within 15 min
p90 delay20 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 736 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Alaska AirlinesbestOn-time93%Medianon timep9010 minCancel1.1%Flights91
- SkyWest AirlinesOn-time87%Medianon timep9020 minCancel0.7%Flights430
- Southwest AirlinesOn-time77%Medianon timep9035 minCancel1.4%Flights215
Why flights run late
Delay causes
- Airline23%
- Weather2%
- Air traffic (NAS)26%
- Late aircraft49%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly BOI → SAN
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 88% on time.
- Mornings88% on time · p90 15 min · 915 flights
- Middays83% on time · p90 20 min · 456 flights
- Afternoons81% on time · p90 25 min · 177 flights · limited
- Overnights73% on time · p90 25 min · 55 flights · limited
- Evenings71% on time · p90 45 min · 449 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 78% to 86% on time.
- Saturdays86% on time · p90 20 min · 289 flights
- Wednesdays85% on time · p90 20 min · 267 flights
- Mondays83% on time · p90 25 min · 293 flights
- Tuesdays83% on time · p90 20 min · 273 flights
- Thursdays82% on time · p90 30 min · 289 flights
- Fridays79% on time · p90 35 min · 292 flights
- Sundays78% on time · p90 35 min · 349 flights
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