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Route Reliability

Baltimore → Nashville

BWI–BNA · 587 miles · Baltimore/Washington International Thurgood Marshall Airport to Nashville International Airport

81
Pretty Reliable
WanderNerd Reliability Score
81%
Arrive within 15 minutes
4 min
Average arrival delay
1.8%
Cancelled
1,856
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines81% on time · 1,763 flights
  • Spirit Airlines74% on time · 93 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning flights do better here.

BWI–BNA flights departing between 6–9 AM arrived on time 95% of the time, versus 68% between 9 PM–12 AM.

Saturday comes out ahead.

A small edge: 83% on time on Saturdays against 78% on Fridays.

Slipping a little lately.

BWI–BNA flights arrived on time 80% of the time over the last three months in the data, compared with 87% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon82%(272 flights)
  • Tue83%(241 flights)
  • Wed81%(234 flights)
  • Thu81%(278 flights)
  • Fri78%(280 flights)
  • Sat83%(226 flights)
  • Sun79%(287 flights)
On-time by departure window
  • 6–9 AM95%(408 flights)
  • 9 AM–12 PM90%(327 flights)
  • 12–3 PM72%(313 flights)
  • 3–6 PM76%(296 flights)
  • 6–9 PM73%(348 flights)
  • 9 PM–12 AM68%(126 flights)
On-time trend by month
77%
May

Jun 72% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%165
July 202573%166
August 202583%169
September 202589%167
October 202580%167
November 202580%143
December 202579%129
January 202689%119
February 202692%126
March 202681%147
April 202681%156
May 202677%164

Same trip, other airports

Keep nerding

Based on 1,856 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.