Route on-time record

BOS to JAX: most on-time flights and the best time to fly

Boston (Boston Logan International Airport) to Jacksonville (Jacksonville International Airport). 1,598 nonstop flights in Jun 2025 to May 2026, 74% arrived within 15 minutes and 2.5% were cancelled. The most reliable flight number was JetBlue 109 at 7:00 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

BOS → JAX

Boston to Jacksonville: 1,598 nonstop flights a year

On time (12 months)

74%

Cancelled

2.5%

avg delay 18 min

Best time to leave

9 AM to noon

87% on time vs 65% 3 to 6 PM

Most reliable airline

Delta

77% chance on time

Check BOS to JAX fares

Lowest nonstop fare seen in the next two months: $428 (JetBlue 109 on 2026-10-18). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

#1 · JetBlue 109
7:00 AM → 10:04 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-05-31.
82%
chance on time
On time (history)
85%
Cancelled
3.6%
Avg arrival delay
11 min
- Arrived on time 85% of the time (349 flights, Jun 2025 to May 2026).
- Cancelled 3.6% of the time (13 of 364).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Strong track record · 349 flights
Find JetBlue 109 fares Opens this date on Aviasales
#2 · Republic 5597 · sold as American Eagle, Delta Connection or United Express
8:45 AM → 11:47 AM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
On time (history)
82%
Cancelled
0.0%
Avg arrival delay
10 min
- Arrived on time 82% of the time (95 flights, Jun 2025 to May 2026).
- Never cancelled in 95 scheduled flights.
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Moderate track record · 95 flights
Find 8:45 AM flight fares Opens this date on Aviasales
#3 · Republic 5657 · sold as American Eagle, Delta Connection or United Express
3:54 PM → 7:04 PM3h 06m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
On time (history)
79%
Cancelled
1.0%
Avg arrival delay
13 min
- Arrived on time 79% of the time (99 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 65% on time; 9 AM to noon: 87%).
- Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 99 flights
Find 3:54 PM flight fares Opens this date on Aviasales
#4 · Republic 5593 · sold as American Eagle, Delta Connection or United Express
8:25 PM → 11:32 PM3h 07m nonstop
Local times, typical schedule. Last flown 2026-05-31.
71%
chance on time
On time (history)
74%
Cancelled
1.3%
Avg arrival delay
19 min
- Arrived on time 74% of the time (77 flights, Jun 2025 to May 2026).
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
Moderate track record · 77 flights
Find 8:25 PM flight fares Opens this date on Aviasales
#5 · JetBlue 809
7:00 PM → 10:05 PM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-19.
64%
chance on time
On time (history)
69%
Cancelled
0.0%
Avg arrival delay
17 min
- Arrived on time 69% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Departs outside BOS's trouble window (noon to 6 PM, when 79% of its 196 ground stops and delay programs started).
- 70% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 39 flights
Find JetBlue 809 fares Opens this date on Aviasales
#6 · JetBlue 209
3:15 PM → 6:12 PM2h 57m nonstop
Local times, typical schedule. Last flown 2026-05-20.
62%
chance on time
On time (history)
60%
Cancelled
3.2%
Avg arrival delay
30 min
- Arrived on time 60% of the time (121 flights, Jun 2025 to May 2026).
- Cancelled 3.2% of the time (4 of 125).
- Leaves in this route's least on-time window (3 to 6 PM: 65% on time; 9 AM to noon: 87%).
- Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 121 flights
Find JetBlue 209 fares Opens this date on Aviasales
#7 · JetBlue 509
3:42 PM → 6:43 PM3h 01m nonstop
Local times, typical schedule. Last flown 2026-05-31.
61%
chance on time
On time (history)
57%
Cancelled
0.0%
Avg arrival delay
33 min
- Arrived on time 57% of the time (81 flights, Jun 2025 to May 2026).
- Never cancelled in 82 scheduled flights.
- Leaves in this route's least on-time window (3 to 6 PM: 65% on time; 9 AM to noon: 87%).
- Departs inside BOS's trouble window: 79% of its 196 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 81 flights
Find JetBlue 509 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Delta Air Lines77%
54 flights · 84% on time as flown · 3.3% cancel
JetBlue73%
652 flights · 75% on time as flown · 2.7% cancel
Republic Airways (sold as American Eagle, Delta Connection or United Express)71%
892 flights · 73% on time as flown · 2.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM84%
535 flights · avg delay 10 min
9 AM to noon87%
188 flights · avg delay 9 min
Noon to 3 PM70%
61 flights · avg delay 24 min
3 to 6 PM65%
480 flights · avg delay 25 min
6 to 9 PM65%
334 flights · avg delay 24 min

Best day: Wednesday (80%). Worst: Thursday (70%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

What delays this route

Late-arriving aircraft39%
Airline (crew, maintenance, boarding)32%
Air traffic control and airport volume28%
Severe weather2%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from BOS to JAX…

BOS to JAX questions

What time of day is best to fly BOS to JAX?: 9 AM to noon: 87% of flights arrived on time, against 65% for departures 3 to 6 PM.
Which airline is most on time from BOS to JAX?: Delta, with a season-adjusted 77% chance of operating and arriving on time over 54 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on BOS to JAX?: July (64% on time); the best was November (82%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?: No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

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