Baltimore (BWI) to San Antonio (SAT): On-Time Performance
Data through July 2026
Baltimore (BWI) to San Antonio (SAT) effectively runs on two schedules. In October 2024, 95% of arrivals were on time; in July 2024 that fell to 36% — a 58-point seasonal swing. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 66%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 2.0
- last 12 months
- Duration
- 3h 45m
- scheduled
- Distance
- 1,407 mi
Monthly on-time trend
Best time to fly from BWI to SAT
Aim for departures around 8 a.m. (89% on-time); avoid 9 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 19 min |
| Tuesday | 79% | 14 min |
| Wednesdaybest | 80% | 13 min |
| Thursday | 74% | 13 min |
| Friday | 74% | 17 min |
| Saturday | 69% | 20 min |
| Sunday | 77% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft43%
- Airline operations33%
- National airspace system18%
- Weather4%
- Security1%
Frequently asked questions
- How often are flights from BWI to SAT delayed?
- 25% of BWI–SAT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 16 minutes.
- What is the best time of day to fly from BWI to SAT?
- Departures around 8 a.m. have the best record (89% on-time), while departures around 9 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BWI to SAT?
- The scheduled BWI–SAT flight time averages 3h 45m over 1,407 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BWI to SAT flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from BWI to SAT?
- July 2024 was the roughest month in this dataset, with only 36% of arrivals on time. The best was October 2024 at 95%. If your dates are flexible, that 58-point gap is worth planning around.
Explore related pages
More routes from BWI
Other ways to fly to San Antonio (SAT)
Related guides
Based on 1,627 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.