Historical on-time performance
Baltimore to San Diego
2,295 miData through Dec 2025Source: US DOT · BTS
Flights on BWI–SAN arrive on time 75% of the time over the last 12 months.
On-time rate75%arrived within 15 min
p90 delay45 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 984 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 timep9045 minCancel1.0%Flights984
Why flights run late
Delay causes
- Airline35%
- Weather5%
- Air traffic (NAS)21%
- Late aircraft38%
- Security1%
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 BWI → 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 — 84% on time.
- Mornings84% on time · p90 20 min · 1,124 flights
- Middays77% on time · p90 35 min · 330 flights
- Evenings63% on time · p90 55 min · 469 flights
- Afternoons61% on time · p90 55 min · 284 flights
- Overnights58% on time · p90 70 min · 353 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 68% to 76% on time.
- Tuesdays76% on time · p90 30 min · 370 flights
- Thursdays76% on time · p90 45 min · 385 flights
- Mondays74% on time · p90 40 min · 390 flights
- Fridays74% on time · p90 50 min · 389 flights
- Wednesdays73% on time · p90 40 min · 364 flights
- Saturdays70% on time · p90 45 min · 314 flights
- Sundays68% on time · p90 45 min · 348 flights
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