Boston (BOS) to Nashville (BNA): On-Time Performance
Data through May 2026
When you fly BOS to BNA matters as much as anything else about the booking: the route swung from 89% on-time in November 2024 to just 63% in July 2025. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 63%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 1.4%
- Flights/day
- 8.1
- last 12 months
- Duration
- 2h 55m
- scheduled
- Distance
- 942 mi
Best airline from BOS to BNA
5 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 76% | 16 min | 2.6% | 1,109 |
| Delta Air Lines | 75% | 21 min | 0.5% | 872 |
| Southwest Airlines | 75% | 17 min | 0.8% | 1,925 |
| JetBlue Airways | 74% | 18 min | 1.4% | 1,623 |
| Spirit Airlines | 70% | 21 min | 4.3% | 277 |
Monthly on-time trend
Best time to fly from BOS to BNA
Aim for departures around 5 a.m. (93% on-time); avoid 8 p.m. departures (57%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 18 min |
| Tuesday | 76% | 17 min |
| Wednesdaybest | 79% | 16 min |
| Thursday | 73% | 23 min |
| Friday | 73% | 17 min |
| Saturdaybest | 79% | 14 min |
| Sunday | 70% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft45%
- Airline operations34%
- National airspace system19%
- Weather2%
Frequently asked questions
- How often are flights from BOS to BNA delayed?
- 25% of BOS–BNA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from BOS to BNA?
- Republic Airways has the best on-time record on this route at 76%, based on 1,109 flights. 5 airlines flew BOS–BNA frequently enough to compare in this period.
- What is the best time of day to fly from BOS to BNA?
- Departures around 5 a.m. have the best record (93% on-time), while departures around 8 p.m. have the worst (57%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BOS to BNA?
- The scheduled BOS–BNA flight time averages 2h 55m over 942 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BOS to BNA flights cancelled?
- 1.4% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from BOS to BNA?
- July 2025 was the roughest month in this dataset, with only 63% of arrivals on time. The best was November 2024 at 89%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 5,808 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.