Nashville (BNA) to Boston (BOS): On-Time Performance
Data through July 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 73% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 63%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 8.0
- last 12 months
- Duration
- 2h 35m
- scheduled
- Distance
- 942 mi
Best airline from BNA to BOS
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 85% | 12 min | 2.1% | 1,069 |
| Spirit Airlines | 75% | 26 min | 5.2% | 248 |
| Delta Air Lines | 74% | 27 min | 0.9% | 1,007 |
| JetBlue Airways | 73% | 21 min | 2.2% | 1,734 |
| Southwest Airlines | 66% | 20 min | 0.9% | 2,024 |
Monthly on-time trend
Best time to fly from BNA to BOS
Aim for departures around 6 a.m. (91% on-time); avoid 9 p.m. departures (52%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 69% | 22 min |
| Tuesday | 77% | 16 min |
| Wednesday | 78% | 15 min |
| Thursday | 69% | 27 min |
| Friday | 71% | 23 min |
| Saturdaybest | 81% | 16 min |
| Sunday | 68% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations30%
- National airspace system28%
- Weather3%
Frequently asked questions
- How often are flights from BNA to BOS delayed?
- 27% of BNA–BOS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. 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 1,069 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 6 a.m. have the best record (91% on-time), while departures around 9 p.m. have the worst (52%). 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 27% of the time.
- How often are BNA to BOS flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above 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 6,084 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.