Southwest Airlines BNA to BOS on-time performance
Southwest Airlines nonstop flights from Nashville to Boston · Aug 2025 – Jul 2026
On-time arrivals
60%
arrived < 15 min late
Cancelled
1.2%
12 flights
Avg arrival delay
23 min
54 min when late
Rank on route
#6 of 6
route average 69% on time
Key facts
- Southwest Airlines flights on BNA to BOS arrived on time 60% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 12% arrived an hour or more late.
- That ranks #6 of 6 airlines on this route, which averaged 69% on time overall.
- The largest source of delay minutes was late-arriving aircraft (43%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft43%
- Air traffic control & airport congestion35%
- Airline (crew, maintenance, cleaning, fueling)20%
- Extreme weather2%
- Security0%
Other airlines on BNA to BOS
- JetBlue71% on time · 21 min avg delay
- Delta Air Lines71% on time · 30 min avg delay
- Republic Airways81% on time · 18 min avg delay
- Spirit Airlines67% on time · 35 min avg delay
- American Airlines100% on time · 0 min avg delay
Full BNA to BOS comparison →
Southwest Airlines on-time record across all routes →
1,000 Southwest Airlines flights tracked on this route; 12 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.