BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
IAD→BNA

Washington, DC (IAD) to Nashville, TN (BNA) flight delay odds

82.1% of 1,012 official scheduled IAD-to-BNA flights arrived on time; 10.8% arrived at least 30 minutes late and 0.7% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALLower disruption
82.1%arrived on time
10.8%30+ min late
0.7%cancelled
1,012scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late3.3%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+4.9 mincompleted flights

Which departure time was most reliable for IAD to BNA?

Among qualifying IAD-to-BNA departure window results, Early morning had the highest on-time rate: 91.4% of 266 flights. Evening was lowest at 74.6% across 355 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning26691.4%6.0%0.0%
Afternoon35082.6%9.4%1.1%
Evening35574.6%15.8%0.8%

Which weekday was most reliable for IAD to BNA?

Among qualifying IAD-to-BNA weekday results, Friday had the highest on-time rate: 85.7% of 147 flights. Sunday was lowest at 74.2% across 159 flights.

DayFlightsOn time30+ minCancelled
Monday14884.5%8.1%0.7%
Tuesday12781.1%12.6%0.0%
Wednesday13682.4%10.3%0.0%
Thursday16282.1%10.5%0.0%
Friday14785.7%11.6%0.0%
Saturday13385.7%9.8%0.8%
Sunday15974.2%12.6%3.1%

Which airline was most reliable for IAD to BNA?

Among qualifying IAD-to-BNA airline results, Republic Airways had the highest on-time rate: 86.8% of 38 flights. Allegiant Air was lowest at 68.4% across 38 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines93582.5%10.6%0.7%
Allegiant Air3868.4%18.4%0.0%
Republic Airways3886.8%7.9%0.0%
Southwest Airlines1100.0%0.0%0.0%

Which month was most reliable for IAD to BNA?

Among qualifying IAD-to-BNA month results, April 2026 had the highest on-time rate: 93.3% of 89 flights. June 2026 was lowest at 72.8% across 92 flights.

MonthFlightsOn time30+ minCancelled
July 202510178.2%11.9%1.0%
August 202510084.0%9.0%0.0%
September 20257991.1%6.3%0.0%
October 20259382.8%8.6%0.0%
November 20258880.7%11.4%0.0%
December 20257173.2%18.3%0.0%
January 20265881.0%8.6%6.9%
February 20266882.4%11.8%2.9%
March 20268786.2%11.5%0.0%
April 20268993.3%4.5%0.0%
May 20268679.1%10.5%0.0%
June 20269272.8%17.4%0.0%

What drove IAD to BNA delay minutes?

Late aircraft was the largest recorded IAD-to-BNA delay category, accounting for 44.2% of 13,052 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.4%
Late aircraft44.2%
National airspace24.9%
Weather6.5%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.