Boston (BOS) to Jacksonville (JAX): On-Time Performance
Data through July 2026
When you fly BOS to JAX matters as much as anything else about the booking: the route swung from 89% on-time in November 2024 to just 66% in May 2025. Across the full period the route averages 75% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 65%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 2.1%
- Flights/day
- 4.4
- last 12 months
- Duration
- 3h 2m
- scheduled
- Distance
- 1,011 mi
Best airline from BOS to JAX
3 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 81% | 16 min | 1.7% | 424 |
| JetBlue Airways | 76% | 19 min | 2.5% | 1,296 |
| Republic Airways | 74% | 17 min | 1.9% | 1,450 |
Monthly on-time trend
Best time to fly from BOS to JAX
Aim for departures around 2 p.m. (95% on-time); avoid 4 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 20 min |
| Tuesdaybest | 80% | 16 min |
| Wednesdaybest | 80% | 12 min |
| Thursday | 71% | 21 min |
| Friday | 73% | 19 min |
| Saturday | 79% | 16 min |
| Sunday | 70% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations35%
- National airspace system24%
- Weather5%
Frequently asked questions
- How often are flights from BOS to JAX delayed?
- 25% of BOS–JAX 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 18 minutes.
- Which airline is most reliable from BOS to JAX?
- Delta Air Lines has the best on-time record on this route at 81%, based on 424 flights. 3 airlines flew BOS–JAX frequently enough to compare in this period.
- What is the best time of day to fly from BOS to JAX?
- Departures around 2 p.m. have the best record (95% on-time), while departures around 4 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from BOS to JAX?
- The scheduled BOS–JAX flight time averages 3h 2m over 1,011 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BOS to JAX flights cancelled?
- 2.1% 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 BOS to JAX?
- May 2025 was the roughest month in this dataset, with only 66% of arrivals on time. The best was November 2024 at 89%. If your dates are flexible, that 23-point gap is worth planning around.
Explore related pages
More routes from BOS
Other ways to fly to Jacksonville (JAX)
Related guides
Based on 3,170 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.