Historical on-time performance
San Antonio to Baltimore
1,407 miData through May 2026Source: US DOT · BTS
Flights on SAT–BWI arrive on time 80% of the time over the last 12 months.
On-time rate80%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled1.8%of scheduled flights
based on 738 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Southwest AirlinesOn-time80%Medianon timep9030 minCancel1.8%Flights738
Why flights run late
Delay causes
- Airline23%
- Weather6%
- Air traffic (NAS)27%
- Late aircraft44%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline31%
- Weather69%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 13 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 SAT → BWI
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 — 95% on time.
- Mornings95% on time · p90 5 min · 1,095 flights
- Middays87% on time · p90 15 min · 329 flights
- Afternoons70% on time · p90 50 min · 831 flights
- Evenings58% on time · p90 65 min · 227 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 · 344 flights
- Wednesdays84% on time · p90 20 min · 341 flights
- Saturdays82% on time · p90 30 min · 260 flights
- Mondays81% on time · p90 30 min · 405 flights
- Thursdays81% on time · p90 35 min · 396 flights
- Sundays80% on time · p90 30 min · 336 flights
- Fridays80% on time · p90 30 min · 412 flights
Keep exploring