Skip to content
WanderNerd
Check a flight

Route Reliability

Seattle → Nashville

SEA–BNA · 1,978 miles · Seattle–Tacoma International Airport to Nashville International Airport

82
Pretty Reliable
WanderNerd Reliability Score
77%
Arrive within 15 minutes
3 min
Average arrival delay
0.7%
Cancelled
1,475
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Delta Air Lines84%504 flights
  2. 2.Alaska Airlines74%843 flights
  3. 3.Southwest Airlines69%128 flights

What the data says

Morning-you made the right choice.

SEA–BNA flights departing between 6–9 AM arrived on time 87% of the time, versus 76% between 9 PM–12 AM.

Skip Tuesday if you can.

SEA–BNA flights arrived on time 81% of the time on Wednesdays. On Tuesdays: 74%.

Delta Air Lines has a clear lead on this route.

Delta Air Lines arrived on time 84% of the time on this route; Southwest Airlines managed 69%.

Ticking up lately.

SEA–BNA flights arrived on time 88% of the time over the last three months in the data, compared with 84% in the three months before that.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon77%(211 flights)
  • Tue74%(203 flights)
  • Wed81%(200 flights)
  • Thu80%(212 flights)
  • Fri74%(215 flights)
  • Sat76%(202 flights)
  • Sun78%(218 flights)
On-time by departure window
  • 6–9 AM87%(102 flights)
  • 9 AM–12 PM77%(473 flights)
  • 3–6 PM77%(622 flights)
  • 6–9 PM—(2 flights)
  • 9 PM–12 AM76%(262 flights)
On-time trend by month
84%
May

Jun 66% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%171
July 202565%187
August 202565%175
September 202579%134
October 202578%115
November 202584%88
December 202579%90
January 202683%76
February 202691%76
March 202688%90
April 202692%118
May 202684%141

Keep nerding

Based on 1,475 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.