Nashville (BNA) to Boston (BOS): On-Time Performance
Data through May 2026
Nashville (BNA) to Boston (BOS) effectively runs on two schedules. In January 2025, 86% of arrivals were on time; in September 2025 that fell to 56% — a 31-point seasonal swing. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 64%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.5%
- Flights/day
- 8.1
- last 12 months
- Duration
- 2h 35m
- scheduled
- Distance
- 942 mi
Best airline from BNA to BOS
5 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 85% | 12 min | 2.0% | 1,109 |
| Delta Air Lines | 75% | 27 min | 0.5% | 872 |
| Spirit Airlines | 73% | 27 min | 4.7% | 278 |
| JetBlue Airways | 73% | 22 min | 1.8% | 1,623 |
| Southwest Airlines | 68% | 19 min | 1.0% | 1,926 |
Monthly on-time trend
Best time to fly from BNA to BOS
Aim for departures around 8 a.m. (91% on-time); avoid 3 p.m. departures (53%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 71% | 22 min |
| Tuesday | 78% | 15 min |
| Wednesday | 79% | 15 min |
| Thursday | 70% | 27 min |
| Friday | 70% | 24 min |
| Saturdaybest | 81% | 14 min |
| Sunday | 69% | 22 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft38%
- Airline operations31%
- National airspace system28%
- Weather3%
Frequently asked questions
- How often are flights from BNA to BOS delayed?
- 26% of BNA–BOS 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 20 minutes.
- Which airline is most reliable from BNA to BOS?
- Republic Airways has the best on-time record on this route at 85%, based on 1,109 flights. 5 airlines flew BNA–BOS frequently enough to compare in this period.
- What is the best time of day to fly from BNA to BOS?
- Departures around 8 a.m. have the best record (91% on-time), while departures around 3 p.m. have the worst (53%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BNA to BOS?
- The scheduled BNA–BOS flight time averages 2h 35m over 942 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are BNA to BOS flights cancelled?
- 1.5% 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 BNA to BOS?
- September 2025 was the roughest month in this dataset, with only 56% of arrivals on time. The best was January 2025 at 86%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 5,810 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.