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

Boston, MA (BOS) to Nashville, TN (BNA) flight delay odds

68.9% of 2,945 official scheduled BOS-to-BNA flights arrived on time; 20.3% arrived at least 30 minutes late and 1.9% 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 SIGNALVariable
68.9%arrived on time
20.3%30+ min late
1.9%cancelled
2,945scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.0%all scheduled flights
120+ minutes late3.9%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+12.5 mincompleted flights

Which departure time was most reliable for BOS to BNA?

Among qualifying BOS-to-BNA departure window results, Late morning had the highest on-time rate: 83.3% of 354 flights. Evening was lowest at 56.3% across 892 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning85381.1%11.0%2.6%
Late morning35483.3%8.2%0.8%
Afternoon83263.7%22.4%1.4%
Evening89256.3%32.2%1.8%

Which weekday was most reliable for BOS to BNA?

Among qualifying BOS-to-BNA weekday results, Saturday had the highest on-time rate: 76.6% of 359 flights. Thursday was lowest at 64.1% across 435 flights.

DayFlightsOn time30+ minCancelled
Monday44167.1%19.0%4.3%
Tuesday41472.0%16.7%1.9%
Wednesday40072.0%21.0%0.8%
Thursday43564.1%26.7%0.9%
Friday44667.9%21.5%0.4%
Saturday35976.6%13.6%1.7%
Sunday45064.2%22.2%2.9%

Which airline was most reliable for BOS to BNA?

Among qualifying BOS-to-BNA airline results, Spirit Airlines had the highest on-time rate: 82.5% of 40 flights. Southwest Airlines was lowest at 66.1% across 996 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines99666.1%21.8%1.2%
JetBlue Airways87470.6%19.3%2.1%
Delta Air Lines53370.4%21.0%0.8%
Republic Airways50068.6%19.2%4.0%
Spirit Airlines4082.5%10.0%2.5%
American Airlines2100.0%0.0%0.0%

Which month was most reliable for BOS to BNA?

Among qualifying BOS-to-BNA month results, August 2025 had the highest on-time rate: 82.3% of 266 flights. July 2025 was lowest at 61.4% across 290 flights.

MonthFlightsOn time30+ minCancelled
July 202529061.4%28.6%2.8%
August 202526682.3%10.5%0.4%
September 202525670.7%21.5%0.8%
October 202533065.5%22.1%1.8%
November 202523170.1%22.5%0.9%
December 202520262.9%21.3%1.5%
January 202618370.5%12.0%8.2%
February 202617771.8%14.7%6.2%
March 202623473.5%17.5%2.1%
April 202623972.0%17.6%0.0%
May 202626965.4%24.5%0.4%
June 202626863.1%25.0%0.4%

What drove BOS to BNA delay minutes?

Late aircraft was the largest recorded BOS-to-BNA delay category, accounting for 47.0% of 58,269 BTS-attributed delay minutes during July 2025–June 2026.

Airline34.1%
Late aircraft47.0%
National airspace17.0%
Weather1.7%
Security0.3%
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.