Jacksonville (JAX) to Boston (BOS): On-Time Performance
Data through May 2026
When you fly JAX to BOS matters as much as anything else about the booking: the route swung from 88% on-time in May 2026 to just 54% in September 2025. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 67%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 22 min
- completed flights
- Cancelled
- 1.8%
- Flights/day
- 4.4
- last 12 months
- Duration
- 2h 43m
- scheduled
- Distance
- 1,011 mi
Best airline from JAX to BOS
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 79% | 19 min | 1.5% | 1,283 |
| Delta Air Lines | 78% | 26 min | 1.7% | 474 |
| JetBlue Airways | 69% | 25 min | 2.2% | 1,222 |
Monthly on-time trend
Best time to fly from JAX to BOS
Aim for departures around 9 a.m. (89% on-time); avoid 5 p.m. departures (51%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 70% | 26 min |
| Tuesday | 80% | 21 min |
| Wednesday | 78% | 15 min |
| Thursday | 72% | 23 min |
| Friday | 72% | 31 min |
| Saturdaybest | 81% | 17 min |
| Sunday | 72% | 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 aircraft39%
- Airline operations35%
- National airspace system24%
- Weather3%
Frequently asked questions
- How often are flights from JAX to BOS delayed?
- 25% of JAX–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 22 minutes.
- Which airline is most reliable from JAX to BOS?
- Republic Airways has the best on-time record on this route at 79%, based on 1,283 flights. 3 airlines flew JAX–BOS frequently enough to compare in this period.
- What is the best time of day to fly from JAX to BOS?
- Departures around 9 a.m. have the best record (89% on-time), while departures around 5 p.m. have the worst (51%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from JAX to BOS?
- The scheduled JAX–BOS flight time averages 2h 43m over 1,011 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are JAX to BOS flights cancelled?
- 1.8% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, slightly above the national rate of 1.6%.
- What is the worst month to fly from JAX to BOS?
- September 2025 was the roughest month in this dataset, with only 54% of arrivals on time. The best was May 2026 at 88%. If your dates are flexible, that 35-point gap is worth planning around.
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Based on 2,979 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.