67% of flights from Boston to Nashville arrived on time over the past 12 months. That is worse than the typical U.S. route. The 5 a.m. departures ran on time 88% of the time; the 3 p.m. ones 51%. Most reliable airline: JetBlue (69%). 14% of flights arrived more than an hour late or not at all.
How late?
The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for BOS → BNA: when a flight was late, it was under 45 minutes late 50% of the time. About 1 in 9 flights landed an hour or more late, and 1 in 52 three hours or more; 2.6% were cancelled outright.
- On time or early67%
- 15–30 min late9.6%
- 30–60 min late9.2%
- 1–2 hours late7.1%
- 2–3 hours late2.5%
- 3+ hours late1.9%
- Diverted0.2%
- Cancelled2.6%
Share of all 2,939 scheduled flights, past 12 months, by arrival time against schedule.
By airline
| Airline | Flights | On time | Cancelled | Typical arrival | 1h+ late | Avg when late | Operated by |
|---|---|---|---|---|---|---|---|
| Delta Air Lines | 1,033 | 69% | 2.7% | −4 min | 13.1% | +80 min | Delta Air Lines 54%, Republic Airways 46% |
| Southwest Airlines | 1,001 | 63% | 1.2% | +3 min | 11.7% | +63 min | Southwest Airlines |
| JetBlue | 887 | 69% | 3.8% | −6 min | 9.8% | +66 min | JetBlue |
| Spirit Airlines | 16 | — | — | — | — | — | Spirit Airlines |
| American Airlines | 2 | — | — | — | — | — | American Airlines |
Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.
Best time of day to fly
On-time rate by scheduled departure hour (local time at BOS). Delays build through the day as late planes knock on, so early flights usually do best.
By airline and hour
| Departs | Delta Air Lines | Southwest Airlines | JetBlue |
|---|---|---|---|
| 5 a.m. | — | 88% | — |
| 7 a.m. | 77% | — | 73% |
| 8 a.m. | 74% | 83% | — |
| noon | — | 64% | — |
| 2 p.m. | 70% | — | — |
| 4 p.m. | — | — | 49% |
| 6 p.m. | — | 48% | — |
| 7 p.m. | 59% | — | — |
Last flight of the day
On BOS → BNA, each airline's last flight of the day was cancelled 2.6% of the time, against 2.4% for its earlier flights, about the same. It arrived 3+ hours late 2.5% of the time (earlier flights: 1.8%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.
| Airline | Last departure | Last: cancelled | Last: 3h+ late | Earlier: cancelled | Next morning |
|---|---|---|---|---|---|
| JetBlue | 4:57 p.m. | 3.5% | 1.4% | 3.6% | first flight 6:19 a.m. |
| Delta Air Lines | 7:45 p.m. | 3.3% | 2.5% | 2.4% | first flight 8:30 a.m. |
| Southwest Airlines | 6:50 p.m. | 1.1% | 3.3% | 1.3% | first flight 8:45 a.m. |
Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.
By month
Each calendar month pooled over 2023–2026. Best: March (80%). Worst: July (63%).
By day of week
| Day | Flights | On time | Cancelled |
|---|---|---|---|
| Monday | 443 | 65% | 4.5% |
| Tuesday | 410 | 69% | 2.9% |
| Wednesday | 405 | 69% | 2.0% |
| Thursday | 430 | 65% | 1.2% |
| Friday | 442 | 68% | 0.9% |
| Saturday | 363 | 72% | 2.5% |
| Sunday | 446 | 63% | 3.8% |
Why flights were late
Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.
Cancellations: weather 28 · airline 27 · air traffic/airport 20
Month by month
Flight numbers on this route
Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.
| Flight | Departs | Flights | On time | Cancelled | Typical arrival | Operated by |
|---|---|---|---|---|---|---|
| B6 1807 | 10:28 a.m. | 158 | 76% | 6.3% | −15 min | JetBlue |
| B6 507 | 4:55 p.m. | 150 | 48% | 6.0% | +13 min | JetBlue |
Worst days in the past year
| Date | Flights | On time | Cancelled |
|---|---|---|---|
| Dec 14, 2025 | 8 | 0% | 0 |
| Dec 4, 2025 | 7 | 0% | 0 |
| Jan 26, 2026 | 6 | 0% | 3 |
| Jan 25, 2026 | 6 | 0% | 6 |
| Feb 23, 2026 | 6 | 0% | 6 |
Nearby airport alternatives
Other ways to make the same trip, using airports within 60 miles of Boston or Nashville. PVD → BNA has been 12 points more reliable.
| Route | Flights | On time | Cancelled |
|---|---|---|---|
| BOS → BNA (this route) | 2,939 | 67% | 2.5% |
| PVD → BNA Rhode Island T. F. Green to Nashville | 382 | 79% | 1.3% |
Questions
How often are flights from BOS to BNA on time?
67% of 2,939 scheduled flights from Boston, MA to Nashville, TN arrived within 15 minutes of schedule between September 2025 and August 2026. 2.5% were cancelled.
What is the best time of day to fly BOS to BNA?
Flights scheduled to leave at 5 a.m. were the most reliable (88% on time). The 3 p.m. departures were the least (51%).
Which airline is most on time from BOS to BNA?
JetBlue: 69% of its 887 flights on the route arrived on time. Delta Air Lines: 69%. Southwest Airlines: 63%.
What month has the most delays from BOS to BNA?
July (63% on time). The best month is March (80%), over 2023–2026.
Is the last flight of the day from BOS to BNA more likely to be cancelled?
Not much. Each airline's last BOS–BNA flight of the day was cancelled 2.6% of the time over the past year, against 2.4% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.
Related
- BNA → BOS (return)
- Boston Logan (BOS) delays by hour
- Flights into Nashville (BNA)
- Delta Air Lines on-time record
- Southwest Airlines on-time record
- JetBlue on-time record
- Spirit Airlines on-time record
- American Airlines on-time record
- Connecting off this flight? Check the risk
Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.