Historical on-time performance
Austin to San Diego
1,164 miData through Dec 2025Source: US DOT · BTS
Flights on AUS–SAN arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.6%of scheduled flights
based on 2,053 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- SkyWest AirlinesOn-time75%Medianon timep9035 minCancel1.2%Flights678
- Southwest AirlinesOn-time72%Medianon timep9055 minCancel0.3%Flights1,375
Why flights run late
Delay causes
- Airline22%
- Weather3%
- Air traffic (NAS)12%
- Late aircraft64%
- 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 AUS → 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 — 86% on time.
- Mornings86% on time · p90 15 min · 1,860 flights
- Middays81% on time · p90 25 min · 1,160 flights
- Afternoons70% on time · p90 55 min · 1,383 flights
- Evenings62% on time · p90 55 min · 826 flights
- Overnights58% on time · p90 65 min · 1,033 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 79% on time.
- Tuesdays79% on time · p90 30 min · 875 flights
- Saturdays78% on time · p90 35 min · 643 flights
- Wednesdays75% on time · p90 40 min · 887 flights
- Fridays74% on time · p90 50 min · 980 flights
- Mondays73% on time · p90 40 min · 982 flights
- Sundays70% on time · p90 50 min · 933 flights
- Thursdays70% on time · p90 50 min · 962 flights
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