Skip to content
WanderNerd
Check a flight

Route Reliability

Washington → Nashville

IAD–BNA · 542 miles · Washington Dulles International Airport to Nashville International Airport

88
Pretty Reliable
WanderNerd Reliability Score
84%
Arrive within 15 minutes
4 min
Average arrival delay
0.7%
Cancelled
1,065
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines84% on time · 1,024 flights
  • Allegiant Air75% on time · 40 flights
  • Southwest Airlines100% on time · 1 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.

IAD–BNA flights departing between 6–9 AM arrived on time 94% of the time, versus 67% between 9 PM–12 AM.

Monday comes out ahead.

A small edge: 86% on time on Mondays against 81% on Sundays.

Ticking up lately.

IAD–BNA flights arrived on time 87% of the time over the last three months in the data, compared with 83% 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
  • Mon86%(153 flights)
  • Tue81%(134 flights)
  • Wed85%(142 flights)
  • Thu84%(166 flights)
  • Fri84%(153 flights)
  • Sat85%(142 flights)
  • Sun81%(165 flights)
On-time by departure window
  • 6–9 AM94%(275 flights)
  • 9 AM–12 PM86%(42 flights)
  • 12–3 PM86%(351 flights)
  • 3–6 PM75%(372 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM67%(12 flights)
On-time trend by month
81%
May

Jun 75% → May 81% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%126
July 202582%98
August 202585%100
September 202591%79
October 202583%93
November 202582%88
December 202577%84
January 202688%59
February 202685%66
March 202686%87
April 202693%89
May 202681%86

Same trip, other airports

Keep nerding

Based on 1,065 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.