Southwest Airlines BOS to BNA on-time performance
Southwest Airlines nonstop flights from Boston to Nashville · Aug 2025 – Jul 2026
On-time arrivals
66%
arrived < 15 min late
Cancelled
1.2%
12 flights
Avg arrival delay
22 min
61 min when late
Rank on route
#6 of 6
route average 70% on time
Key facts
- Southwest Airlines flights on BOS to BNA arrived on time 66% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 11% arrived an hour or more late.
- That ranks #6 of 6 airlines on this route, which averaged 70% on time overall.
- The largest source of delay minutes was late-arriving aircraft (57%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft57%
- Airline (crew, maintenance, cleaning, fueling)26%
- Air traffic control & airport congestion15%
- Extreme weather1%
- Security1%
Other airlines on BOS to BNA
- JetBlue73% on time · 18 min avg delay
- Delta Air Lines71% on time · 26 min avg delay
- Republic Airways74% on time · 19 min avg delay
- Spirit Airlines86% on time · 19 min avg delay
- American Airlines100% on time · 0 min avg delay
Full BOS to BNA comparison →
Southwest Airlines on-time record across all routes →
999 Southwest Airlines flights tracked on this route; 12 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.