Southwest Airlines BWI to SFO on-time performance
Southwest Airlines nonstop flights from Baltimore to San Francisco · Aug 2025 – Jul 2026
On-time arrivals
55%
arrived < 15 min late
Cancelled
0.8%
3 flights
Avg arrival delay
26 min
55 min when late
Rank on route
#2 of 2
route average 70% on time
Key facts
- Southwest Airlines flights on BWI to SFO arrived on time 55% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 13% arrived an hour or more late.
- That ranks #2 of 2 airlines on this route, which averaged 70% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (37%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)37%
- Late-arriving aircraft34%
- Air traffic control & airport congestion27%
- Extreme weather2%
- Security0%
Other airlines on BWI to SFO
- United Airlines78% on time · 13 min avg delay
Full BWI to SFO comparison →
Southwest Airlines on-time record across all routes →
365 Southwest Airlines flights tracked on this route; 3 cancelled, 2 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.