OnTimeRoutes
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Southwest Airlines BNA to SLC on-time performance

Southwest Airlines nonstop flights from Nashville to Salt Lake City · Aug 2025 – Jul 2026

On-time arrivals
72%
arrived < 15 min late
Cancelled
0.7%
2 flights
Avg arrival delay
15 min
48 min when late
Rank on route
#2 of 2
route average 84% on time

Key facts

  • Southwest Airlines flights on BNA to SLC arrived on time 72% of the time in Aug 2025 – Jul 2026.
  • 0.7% were cancelled, and 6% arrived an hour or more late.
  • That ranks #2 of 2 airlines on this route, which averaged 84% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (53%).

On-time trend by month

10%55%100%July 2025: 77.4% on time, 0.0% cancelledJul ’25August 2025: 67.7% on time, 0.0% cancelledAug ’25September 2025: 83.3% on time, 0.0% cancelledSep ’25October 2025: 71.0% on time, 0.0% cancelledOct ’25November 2025: 83.3% on time, 0.0% cancelledNov ’25December 2025: 83.9% on time, 0.0% cancelledDec ’25January 2026: 100.0% on time, 14.3% cancelledJan ’26February 2026: 86.4% on time, 0.0% cancelledFeb ’26March 2026: 71.4% on time, 0.0% cancelledMar ’26April 2026: 66.7% on time, 0.0% cancelledApr ’26May 2026: 20.0% on time, 0.0% cancelledMay ’26June 2026: 40.7% on time, 0.0% cancelledJun ’26July 2026: 58.1% 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 aircraft53%
  • Airline (crew, maintenance, cleaning, fueling)33%
  • Air traffic control & airport congestion11%
  • Extreme weather3%
  • Security0%

Other airlines on BNA to SLC

272 Southwest Airlines flights tracked on this route; 2 cancelled, 0 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.