OnTimeRoutes
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Southwest Airlines BNA to SFO on-time performance

Southwest Airlines nonstop flights from Nashville to San Francisco · Aug 2025 – Jul 2026

On-time arrivals
52%
arrived < 15 min late
Cancelled
0.6%
2 flights
Avg arrival delay
29 min
57 min when late
Rank on route
#2 of 2
route average 69% on time

Key facts

  • Southwest Airlines flights on BNA to SFO arrived on time 52% of the time in Aug 2025 – Jul 2026.
  • 0.6% were cancelled, and 17% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 69% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (41%).

On-time trend by month

0%50%100%July 2025: 67.7% on time, 0.0% cancelledJul ’25August 2025: 60.0% on time, 0.0% cancelledAug ’25September 2025: 73.3% on time, 0.0% cancelledSep ’25October 2025: 66.7% on time, 0.0% cancelledOct ’25November 2025: 65.0% on time, 0.0% cancelledNov ’25December 2025: 47.1% on time, 0.0% cancelledDec ’25January 2026: 81.8% on time, 15.4% cancelledJan ’26February 2026: 63.2% on time, 0.0% cancelledFeb ’26March 2026: 86.2% on time, 0.0% cancelledMar ’26April 2026: 36.7% on time, 0.0% cancelledApr ’26May 2026: 22.6% on time, 0.0% cancelledMay ’26June 2026: 13.3% on time, 0.0% cancelledJun ’26July 2026: 38.7% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft41%
  • Air traffic control & airport congestion29%
  • Airline (crew, maintenance, cleaning, fueling)28%
  • Extreme weather1%
  • Security0%

Other airlines on BNA to SFO

311 Southwest Airlines flights tracked on this route; 2 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.