SAT (San Antonio) to BWI (Baltimore) flights arrive on time 83% of the time. The most reliable airline on this route is Southwest Airlines at 84%. The average delay is 55 minutes. Delays on this route are most often caused by the incoming plane arriving late.
Source: Bureau of Transportation Statistics. Updated October 2026.SAT → BWI
SAT (San Antonio) to BWI (Baltimore)
SAT → BWI on-time performance by month
24
25
26
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 83% of flights arrive on schedule.
Delays on this route are most often caused by the incoming plane arriving late.
Accurate?
Southwest Airlines edges out Spirit Airlines on this route — 84% vs 73% on time.
Airline Comparison
Southwest Airlines leads at 84% on time; Spirit Airlines trails at 73%.
Accurate?
Good to know
Departing from SAT
80% on timeTSA is currently ~26 min. Best time: 4 AM (about 5 min).
Arriving at BWI
79% on timeWhen flights into BWI are late, the average delay is 60 minutes. Build buffer if you have ground plans.
If connecting at BWI: TSA is ~14 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what Southwest Airlines owes you — refund rights, action plan, complaint email. Free.
Flying out of SAT? We'll brief you.
Delays, TSA, weather, gates — we'll let you know if something matters.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated October 2026. Source: Bureau of Transportation Statistics.