Route profile
JAX→BOS
Flight reliability, delays and best times to fly from Jacksonville to Boston, 1,010 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 12% of comparable major US routes (4,598 compared)
Calculated from 4,383 flights. How this is calculated · What counts as on time
JAX → BOS arrives on time 74.4% of the time; the return trip, BOS → JAX, arrives on time 75.7% of the time.
JAX → BOS spends 24.8 minutes on the ground on a 1,010-mile trip: 15.8 minutes from pushback to wheels-up at JAX and 9.0 minutes from touchdown to gate at BOS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route's worst arrivals run unusually far past its typical one, a bigger gap than 95% of 4,598 comparable routes.
A typical arrival is 7 min early, but the worst tenth run 78 minutes worse than that.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,598 in the comparison.
What sets this route apart
Where JAX to BOS differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
JAX to BOS struggles most at 8 PM: 56.1% of its flights scheduled then arrive on time, 10 points behind the 66.1% on routes of similar length at the same hour. Against all other routes the gap is 11.3 points.
JAX to BOS is at its best against routes of similar length for flights scheduled at 1 PM: 80.6% arrive on time, 5 points ahead of the 75.6% those routes manage at that hour.
Monday is the day JAX to BOS slips furthest against routes of similar length, 70.8% on time where they average 76.2%, 5.4 points lower. Against all other routes the gap is 6.5 points.
In September, JAX to BOS runs 16.3 points below routes of similar length, 65.4% on time to 81.7%. Against all other routes the gap is 17 points.
June is kinder to JAX to BOS than to routes of similar length: 77.7% on time against 71.7%, 6 points better. Against all other routes the gap is 5 points.
JAX to BOS against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 8 PM departures | 56.1% | routes of similar length | 66.1% | −10.0 pts | 301 here, 147,414 there |
| Hour: 1 PM departures | 80.6% | routes of similar length | 75.6% | +5.0 pts | 381 here, 170,115 there |
| Weekday: Monday | 70.8% | routes of similar length | 76.2% | −5.4 pts | 641 here, 437,110 there |
| Month: September | 65.4% | routes of similar length | 81.7% | −16.3 pts | 335 here, 223,930 there |
| Month: June | 77.7% | routes of similar length | 71.7% | +6.0 pts | 368 here, 237,423 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,010 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why JAX → BOS flights are cancelled
July 2023 – July 2026
JAX → BOS cancelled 82 of 4,383 scheduled flights — about 1 in every 53. The reason filed most often was extreme weather, 41.5% of the cancellations coded on this route — about 1 in every 129 scheduled flights.
Share of cancellations
Of 82 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
34 cancellations, 41.5% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
24 cancellations, 29.3% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
24 cancellations, 29.3% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
82 coded cancellations were recorded on JAX → BOS; the section appears from 50.
When it goes wrong
July 2023 – July 2026
71 min late
against a median of 7 min early
JAX → BOS has an average that understates its risk: a typical arrival is 7 min early, but the worst tenth are 78 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 4,383 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at BOS after arriving from JAX.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 38% | Likely to miss |
| 45 min | 25% | High risk |
| 60 min | 19% | High risk |
| 90 min | 11% | Some risk |
| 120 min | 7.1% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 1.87% of the time and diverts 0.14% of the time, which a late arrival never shows up in.
Chance of missing is the share of 4,295 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 71 minutes late (90th-percentile gate arrival delay), over 4,383 operations.
Any other layover length: connection checker.
Best time to fly
JAX → BOS flights departing 5–9 AM arrived on time 87.9% of the time, against 65.9% for 6–9 PM departures, a gap of 22.0 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 87.4% on time from 420 flights
- 7 AM: 87.8% on time from 401 flights
- 8 AM: too few flights to score
- 9 AM: 88.5% on time from 132 flights
- 10 AM: 84.2% on time from 280 flights
- 11 AM: 73.7% on time from 296 flights
- 12 PM: 69.0% on time from 892 flights
- 1 PM: 80.6% on time from 386 flights
- 2 PM: 64.2% on time from 205 flights
- 3 PM to 6 PM: too few flights to score
- 7 PM: 70.0% on time from 732 flights
- 8 PM: 56.1% on time from 319 flights
- 9 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why JAX → BOS runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for JAX → BOS. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on JAX → BOS, at 41.7%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 87.9% of the time and 6–9 PM departures 65.9%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| JetBlue | 1,838 | 70.0% | 2.12% | -4 min | 14.8% |
| Republic Airways | 1,505 | 78.3% | 1.73% | -8 min | 8.9% |
| Delta Air Lines | 1,040 | 76.3% | 1.63% | -12 min | 10.0% |
JetBlue flew 41.9% of the 4,383 flights listed.
Republic Airways arrived on time 8.3 percentage points more often than JetBlue on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| B61310 JetBlue | 9:55 AM | 716 | 73.3% |
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Monday the least, a gap of 8.5 percentage points.
By month
- Jan: 76.5%
- Feb: 80.7%
- Mar: 79.7%
- Apr: 82.8%
- May: 74.8%
- Jun: 77.7%
- Jul: 61.7%
- Aug: 70.0%
- Sep: 65.4%
- Oct: 70.2%
- Nov: 79.1%
- Dec: 78.0%
July is historically the weakest month and April the strongest, a spread of 21.1 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: too few flights to score (113)
- August 2023: too few flights to score (115)
- September 2023: too few flights to score (102)
- October 2023: too few flights to score (105)
- November 2023: too few flights to score (110)
- December 2023: too few flights to score (103)
- January 2024: too few flights to score (90)
- February 2024: too few flights to score (81)
- March 2024: too few flights to score (89)
- April 2024: too few flights to score (86)
- May 2024: too few flights to score (119)
- June 2024: too few flights to score (98)
- July 2024: too few flights to score (87)
- August 2024: too few flights to score (88)
- September 2024: too few flights to score (115)
- October 2024: too few flights to score (114)
- November 2024: too few flights to score (112)
- December 2024: 76.3% from 137 flights
- January 2025: too few flights to score (103)
- February 2025: too few flights to score (100)
- March 2025: 78.5% from 144 flights
- April 2025: 86.3% from 139 flights
- May 2025: 65.0% from 141 flights
- June 2025: 78.2% from 133 flights
- July 2025: 66.4% from 146 flights
- August 2025: 83.3% from 134 flights
- September 2025: 53.7% from 125 flights
- October 2025: 58.2% from 144 flights
- November 2025: 73.8% from 124 flights
- December 2025: 75.7% from 143 flights
- January 2026: too few flights to score (96)
- February 2026: too few flights to score (101)
- March 2026: 74.6% from 144 flights
- April 2026: 83.3% from 150 flights
- May 2026: 88.2% from 161 flights
- June 2026: 82.9% from 141 flights
- July 2026: 68.8% from 150 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 74.5% against 76.5% in the 12 months before — declining by 2.0 percentage points.
Data and methodology
Calculated by FlyerIntel from 4,383 JAX → BOS flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed