Southwest Airlines BWI to SJU on-time performance
Southwest Airlines nonstop flights from Baltimore to San Juan · Aug 2025 – Jul 2026
On-time arrivals
68%
arrived < 15 min late
Cancelled
0.9%
7 flights
Avg arrival delay
20 min
55 min when late
Rank on route
#2 of 3
route average 67% on time
Key facts
- Southwest Airlines flights on BWI to SJU arrived on time 68% of the time in Aug 2025 – Jul 2026.
- 0.9% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 67% on time overall.
- The largest source of delay minutes was late-arriving aircraft (35%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft35%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion25%
- Extreme weather6%
- Security2%
Other airlines on BWI to SJU
- Spirit Airlines75% on time · 21 min avg delay
- Frontier Airlines55% on time · 44 min avg delay
Full BWI to SJU comparison →
Southwest Airlines on-time record across all routes →
817 Southwest Airlines flights tracked on this route; 7 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.