Southwest Airlines SLC to BWI on-time performance
Southwest Airlines nonstop flights from Salt Lake City to Baltimore · Aug 2025 – Jul 2026
On-time arrivals
84%
arrived < 15 min late
Cancelled
1.0%
4 flights
Avg arrival delay
9 min
51 min when late
Rank on route
#1 of 2
route average 81% on time
Key facts
- Southwest Airlines flights on SLC to BWI arrived on time 84% of the time in Aug 2025 – Jul 2026.
- 1% were cancelled, and 4% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 81% on time overall.
- The largest source of delay minutes was late-arriving aircraft (50%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)29%
- Air traffic control & airport congestion16%
- Extreme weather4%
- Security0%
Other airlines on SLC to BWI
- Delta Air Lines78% on time · 9 min avg delay
Full SLC to BWI comparison →
Southwest Airlines on-time record across all routes →
409 Southwest Airlines flights tracked on this route; 4 cancelled, 1 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.