Historical on-time performance
San Antonio to Baltimore
1,407 miData through Dec 2025Source: US DOT · BTS
Flights on SAT–BWI arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled1.4%of scheduled flights
based on 806 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time83%Medianon timep9025 minCancel1.4%Flights806
Why flights run late
Delay causes
- Airline24%
- Weather7%
- Air traffic (NAS)23%
- Late aircraft47%
- 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 SAT → BWI
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 — 95% on time.
- Mornings95% on time · p90 5 min · 1,022 flights
- Middays86% on time · p90 20 min · 380 flights
- Afternoons71% on time · p90 45 min · 933 flights
- Evenings60% on time · p90 55 min · 205 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 85% on time.
- Tuesdays85% on time · p90 20 min · 354 flights
- Wednesdays84% on time · p90 20 min · 352 flights
- Mondays83% on time · p90 25 min · 412 flights
- Saturdays83% on time · p90 30 min · 272 flights
- Thursdays81% on time · p90 35 min · 398 flights
- Sundays80% on time · p90 30 min · 352 flights
- Fridays80% on time · p90 30 min · 412 flights
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