Historical on-time performance
San Diego to Tucson
368 miData through May 2026Source: US DOT · BTS
Flights on SAN–TUS arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay50 min1 in 10 flights is worse (tail risk)
Cancelled0.5%of scheduled flights
based on 653 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time75%Medianon timep9050 minCancel0.5%Flights653
Why flights run late
Delay causes
- Airline26%
- Weather0%
- Air traffic (NAS)5%
- Late aircraft68%
- Security1%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline33%
- Weather33%
- Air traffic (NAS)33%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 3 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SAN → TUS
All airlines · rolling 36 months (2023-06 .. 2026-05).
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 · 454 flights
- Middays80% on time · p90 30 min · 430 flights
- Evenings77% on time · p90 55 min · 451 flights
- Afternoons66% on time · p90 55 min · 179 flights · limited
- Overnights65% on time · p90 55 min · 385 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 72% to 83% on time.
- Wednesdays83% on time · p90 50 min · 273 flights
- Saturdays82% on time · p90 25 min · 165 flights · limited
- Tuesdays81% on time · p90 30 min · 274 flights
- Fridays76% on time · p90 45 min · 299 flights
- Mondays75% on time · p90 50 min · 296 flights
- Sundays73% on time · p90 50 min · 297 flights
- Thursdays72% on time · p90 55 min · 295 flights
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